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Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 4609 |
1 files changed, 4609 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h new file mode 100644 index 0000000000..6d688e42d8 --- /dev/null +++ b/fs/f2fs/f2fs.h @@ -0,0 +1,4609 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * fs/f2fs/f2fs.h + * + * Copyright (c) 2012 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + */ +#ifndef _LINUX_F2FS_H +#define _LINUX_F2FS_H + +#include <linux/uio.h> +#include <linux/types.h> +#include <linux/page-flags.h> +#include <linux/buffer_head.h> +#include <linux/slab.h> +#include <linux/crc32.h> +#include <linux/magic.h> +#include <linux/kobject.h> +#include <linux/sched.h> +#include <linux/cred.h> +#include <linux/sched/mm.h> +#include <linux/vmalloc.h> +#include <linux/bio.h> +#include <linux/blkdev.h> +#include <linux/quotaops.h> +#include <linux/part_stat.h> +#include <crypto/hash.h> + +#include <linux/fscrypt.h> +#include <linux/fsverity.h> + +struct pagevec; + +#ifdef CONFIG_F2FS_CHECK_FS +#define f2fs_bug_on(sbi, condition) BUG_ON(condition) +#else +#define f2fs_bug_on(sbi, condition) \ + do { \ + if (WARN_ON(condition)) \ + set_sbi_flag(sbi, SBI_NEED_FSCK); \ + } while (0) +#endif + +enum { + FAULT_KMALLOC, + FAULT_KVMALLOC, + FAULT_PAGE_ALLOC, + FAULT_PAGE_GET, + FAULT_ALLOC_BIO, /* it's obsolete due to bio_alloc() will never fail */ + FAULT_ALLOC_NID, + FAULT_ORPHAN, + FAULT_BLOCK, + FAULT_DIR_DEPTH, + FAULT_EVICT_INODE, + FAULT_TRUNCATE, + FAULT_READ_IO, + FAULT_CHECKPOINT, + FAULT_DISCARD, + FAULT_WRITE_IO, + FAULT_SLAB_ALLOC, + FAULT_DQUOT_INIT, + FAULT_LOCK_OP, + FAULT_BLKADDR, + FAULT_MAX, +}; + +#ifdef CONFIG_F2FS_FAULT_INJECTION +#define F2FS_ALL_FAULT_TYPE (GENMASK(FAULT_MAX - 1, 0)) + +struct f2fs_fault_info { + atomic_t inject_ops; + unsigned int inject_rate; + unsigned int inject_type; +}; + +extern const char *f2fs_fault_name[FAULT_MAX]; +#define IS_FAULT_SET(fi, type) ((fi)->inject_type & BIT(type)) +#endif + +/* + * For mount options + */ +#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000001 +#define F2FS_MOUNT_DISCARD 0x00000002 +#define F2FS_MOUNT_NOHEAP 0x00000004 +#define F2FS_MOUNT_XATTR_USER 0x00000008 +#define F2FS_MOUNT_POSIX_ACL 0x00000010 +#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000020 +#define F2FS_MOUNT_INLINE_XATTR 0x00000040 +#define F2FS_MOUNT_INLINE_DATA 0x00000080 +#define F2FS_MOUNT_INLINE_DENTRY 0x00000100 +#define F2FS_MOUNT_FLUSH_MERGE 0x00000200 +#define F2FS_MOUNT_NOBARRIER 0x00000400 +#define F2FS_MOUNT_FASTBOOT 0x00000800 +#define F2FS_MOUNT_READ_EXTENT_CACHE 0x00001000 +#define F2FS_MOUNT_DATA_FLUSH 0x00002000 +#define F2FS_MOUNT_FAULT_INJECTION 0x00004000 +#define F2FS_MOUNT_USRQUOTA 0x00008000 +#define F2FS_MOUNT_GRPQUOTA 0x00010000 +#define F2FS_MOUNT_PRJQUOTA 0x00020000 +#define F2FS_MOUNT_QUOTA 0x00040000 +#define F2FS_MOUNT_INLINE_XATTR_SIZE 0x00080000 +#define F2FS_MOUNT_RESERVE_ROOT 0x00100000 +#define F2FS_MOUNT_DISABLE_CHECKPOINT 0x00200000 +#define F2FS_MOUNT_NORECOVERY 0x00400000 +#define F2FS_MOUNT_ATGC 0x00800000 +#define F2FS_MOUNT_MERGE_CHECKPOINT 0x01000000 +#define F2FS_MOUNT_GC_MERGE 0x02000000 +#define F2FS_MOUNT_COMPRESS_CACHE 0x04000000 +#define F2FS_MOUNT_AGE_EXTENT_CACHE 0x08000000 + +#define F2FS_OPTION(sbi) ((sbi)->mount_opt) +#define clear_opt(sbi, option) (F2FS_OPTION(sbi).opt &= ~F2FS_MOUNT_##option) +#define set_opt(sbi, option) (F2FS_OPTION(sbi).opt |= F2FS_MOUNT_##option) +#define test_opt(sbi, option) (F2FS_OPTION(sbi).opt & F2FS_MOUNT_##option) + +#define ver_after(a, b) (typecheck(unsigned long long, a) && \ + typecheck(unsigned long long, b) && \ + ((long long)((a) - (b)) > 0)) + +typedef u32 block_t; /* + * should not change u32, since it is the on-disk block + * address format, __le32. + */ +typedef u32 nid_t; + +#define COMPRESS_EXT_NUM 16 + +/* + * An implementation of an rwsem that is explicitly unfair to readers. This + * prevents priority inversion when a low-priority reader acquires the read lock + * while sleeping on the write lock but the write lock is needed by + * higher-priority clients. + */ + +struct f2fs_rwsem { + struct rw_semaphore internal_rwsem; +#ifdef CONFIG_F2FS_UNFAIR_RWSEM + wait_queue_head_t read_waiters; +#endif +}; + +struct f2fs_mount_info { + unsigned int opt; + int write_io_size_bits; /* Write IO size bits */ + block_t root_reserved_blocks; /* root reserved blocks */ + kuid_t s_resuid; /* reserved blocks for uid */ + kgid_t s_resgid; /* reserved blocks for gid */ + int active_logs; /* # of active logs */ + int inline_xattr_size; /* inline xattr size */ +#ifdef CONFIG_F2FS_FAULT_INJECTION + struct f2fs_fault_info fault_info; /* For fault injection */ +#endif +#ifdef CONFIG_QUOTA + /* Names of quota files with journalled quota */ + char *s_qf_names[MAXQUOTAS]; + int s_jquota_fmt; /* Format of quota to use */ +#endif + /* For which write hints are passed down to block layer */ + int alloc_mode; /* segment allocation policy */ + int fsync_mode; /* fsync policy */ + int fs_mode; /* fs mode: LFS or ADAPTIVE */ + int bggc_mode; /* bggc mode: off, on or sync */ + int memory_mode; /* memory mode */ + int errors; /* errors parameter */ + int discard_unit; /* + * discard command's offset/size should + * be aligned to this unit: block, + * segment or section + */ + struct fscrypt_dummy_policy dummy_enc_policy; /* test dummy encryption */ + block_t unusable_cap_perc; /* percentage for cap */ + block_t unusable_cap; /* Amount of space allowed to be + * unusable when disabling checkpoint + */ + + /* For compression */ + unsigned char compress_algorithm; /* algorithm type */ + unsigned char compress_log_size; /* cluster log size */ + unsigned char compress_level; /* compress level */ + bool compress_chksum; /* compressed data chksum */ + unsigned char compress_ext_cnt; /* extension count */ + unsigned char nocompress_ext_cnt; /* nocompress extension count */ + int compress_mode; /* compression mode */ + unsigned char extensions[COMPRESS_EXT_NUM][F2FS_EXTENSION_LEN]; /* extensions */ + unsigned char noextensions[COMPRESS_EXT_NUM][F2FS_EXTENSION_LEN]; /* extensions */ +}; + +#define F2FS_FEATURE_ENCRYPT 0x00000001 +#define F2FS_FEATURE_BLKZONED 0x00000002 +#define F2FS_FEATURE_ATOMIC_WRITE 0x00000004 +#define F2FS_FEATURE_EXTRA_ATTR 0x00000008 +#define F2FS_FEATURE_PRJQUOTA 0x00000010 +#define F2FS_FEATURE_INODE_CHKSUM 0x00000020 +#define F2FS_FEATURE_FLEXIBLE_INLINE_XATTR 0x00000040 +#define F2FS_FEATURE_QUOTA_INO 0x00000080 +#define F2FS_FEATURE_INODE_CRTIME 0x00000100 +#define F2FS_FEATURE_LOST_FOUND 0x00000200 +#define F2FS_FEATURE_VERITY 0x00000400 +#define F2FS_FEATURE_SB_CHKSUM 0x00000800 +#define F2FS_FEATURE_CASEFOLD 0x00001000 +#define F2FS_FEATURE_COMPRESSION 0x00002000 +#define F2FS_FEATURE_RO 0x00004000 + +#define __F2FS_HAS_FEATURE(raw_super, mask) \ + ((raw_super->feature & cpu_to_le32(mask)) != 0) +#define F2FS_HAS_FEATURE(sbi, mask) __F2FS_HAS_FEATURE(sbi->raw_super, mask) + +/* + * Default values for user and/or group using reserved blocks + */ +#define F2FS_DEF_RESUID 0 +#define F2FS_DEF_RESGID 0 + +/* + * For checkpoint manager + */ +enum { + NAT_BITMAP, + SIT_BITMAP +}; + +#define CP_UMOUNT 0x00000001 +#define CP_FASTBOOT 0x00000002 +#define CP_SYNC 0x00000004 +#define CP_RECOVERY 0x00000008 +#define CP_DISCARD 0x00000010 +#define CP_TRIMMED 0x00000020 +#define CP_PAUSE 0x00000040 +#define CP_RESIZE 0x00000080 + +#define DEF_MAX_DISCARD_REQUEST 8 /* issue 8 discards per round */ +#define DEF_MIN_DISCARD_ISSUE_TIME 50 /* 50 ms, if exists */ +#define DEF_MID_DISCARD_ISSUE_TIME 500 /* 500 ms, if device busy */ +#define DEF_MAX_DISCARD_ISSUE_TIME 60000 /* 60 s, if no candidates */ +#define DEF_DISCARD_URGENT_UTIL 80 /* do more discard over 80% */ +#define DEF_CP_INTERVAL 60 /* 60 secs */ +#define DEF_IDLE_INTERVAL 5 /* 5 secs */ +#define DEF_DISABLE_INTERVAL 5 /* 5 secs */ +#define DEF_DISABLE_QUICK_INTERVAL 1 /* 1 secs */ +#define DEF_UMOUNT_DISCARD_TIMEOUT 5 /* 5 secs */ + +struct cp_control { + int reason; + __u64 trim_start; + __u64 trim_end; + __u64 trim_minlen; +}; + +/* + * indicate meta/data type + */ +enum { + META_CP, + META_NAT, + META_SIT, + META_SSA, + META_MAX, + META_POR, + DATA_GENERIC, /* check range only */ + DATA_GENERIC_ENHANCE, /* strong check on range and segment bitmap */ + DATA_GENERIC_ENHANCE_READ, /* + * strong check on range and segment + * bitmap but no warning due to race + * condition of read on truncated area + * by extent_cache + */ + DATA_GENERIC_ENHANCE_UPDATE, /* + * strong check on range and segment + * bitmap for update case + */ + META_GENERIC, +}; + +/* for the list of ino */ +enum { + ORPHAN_INO, /* for orphan ino list */ + APPEND_INO, /* for append ino list */ + UPDATE_INO, /* for update ino list */ + TRANS_DIR_INO, /* for transactions dir ino list */ + FLUSH_INO, /* for multiple device flushing */ + MAX_INO_ENTRY, /* max. list */ +}; + +struct ino_entry { + struct list_head list; /* list head */ + nid_t ino; /* inode number */ + unsigned int dirty_device; /* dirty device bitmap */ +}; + +/* for the list of inodes to be GCed */ +struct inode_entry { + struct list_head list; /* list head */ + struct inode *inode; /* vfs inode pointer */ +}; + +struct fsync_node_entry { + struct list_head list; /* list head */ + struct page *page; /* warm node page pointer */ + unsigned int seq_id; /* sequence id */ +}; + +struct ckpt_req { + struct completion wait; /* completion for checkpoint done */ + struct llist_node llnode; /* llist_node to be linked in wait queue */ + int ret; /* return code of checkpoint */ + ktime_t queue_time; /* request queued time */ +}; + +struct ckpt_req_control { + struct task_struct *f2fs_issue_ckpt; /* checkpoint task */ + int ckpt_thread_ioprio; /* checkpoint merge thread ioprio */ + wait_queue_head_t ckpt_wait_queue; /* waiting queue for wake-up */ + atomic_t issued_ckpt; /* # of actually issued ckpts */ + atomic_t total_ckpt; /* # of total ckpts */ + atomic_t queued_ckpt; /* # of queued ckpts */ + struct llist_head issue_list; /* list for command issue */ + spinlock_t stat_lock; /* lock for below checkpoint time stats */ + unsigned int cur_time; /* cur wait time in msec for currently issued checkpoint */ + unsigned int peak_time; /* peak wait time in msec until now */ +}; + +/* for the bitmap indicate blocks to be discarded */ +struct discard_entry { + struct list_head list; /* list head */ + block_t start_blkaddr; /* start blockaddr of current segment */ + unsigned char discard_map[SIT_VBLOCK_MAP_SIZE]; /* segment discard bitmap */ +}; + +/* minimum discard granularity, unit: block count */ +#define MIN_DISCARD_GRANULARITY 1 +/* default discard granularity of inner discard thread, unit: block count */ +#define DEFAULT_DISCARD_GRANULARITY 16 +/* default maximum discard granularity of ordered discard, unit: block count */ +#define DEFAULT_MAX_ORDERED_DISCARD_GRANULARITY 16 + +/* max discard pend list number */ +#define MAX_PLIST_NUM 512 +#define plist_idx(blk_num) ((blk_num) >= MAX_PLIST_NUM ? \ + (MAX_PLIST_NUM - 1) : ((blk_num) - 1)) + +enum { + D_PREP, /* initial */ + D_PARTIAL, /* partially submitted */ + D_SUBMIT, /* all submitted */ + D_DONE, /* finished */ +}; + +struct discard_info { + block_t lstart; /* logical start address */ + block_t len; /* length */ + block_t start; /* actual start address in dev */ +}; + +struct discard_cmd { + struct rb_node rb_node; /* rb node located in rb-tree */ + struct discard_info di; /* discard info */ + struct list_head list; /* command list */ + struct completion wait; /* compleation */ + struct block_device *bdev; /* bdev */ + unsigned short ref; /* reference count */ + unsigned char state; /* state */ + unsigned char queued; /* queued discard */ + int error; /* bio error */ + spinlock_t lock; /* for state/bio_ref updating */ + unsigned short bio_ref; /* bio reference count */ +}; + +enum { + DPOLICY_BG, + DPOLICY_FORCE, + DPOLICY_FSTRIM, + DPOLICY_UMOUNT, + MAX_DPOLICY, +}; + +struct discard_policy { + int type; /* type of discard */ + unsigned int min_interval; /* used for candidates exist */ + unsigned int mid_interval; /* used for device busy */ + unsigned int max_interval; /* used for candidates not exist */ + unsigned int max_requests; /* # of discards issued per round */ + unsigned int io_aware_gran; /* minimum granularity discard not be aware of I/O */ + bool io_aware; /* issue discard in idle time */ + bool sync; /* submit discard with REQ_SYNC flag */ + bool ordered; /* issue discard by lba order */ + bool timeout; /* discard timeout for put_super */ + unsigned int granularity; /* discard granularity */ +}; + +struct discard_cmd_control { + struct task_struct *f2fs_issue_discard; /* discard thread */ + struct list_head entry_list; /* 4KB discard entry list */ + struct list_head pend_list[MAX_PLIST_NUM];/* store pending entries */ + struct list_head wait_list; /* store on-flushing entries */ + struct list_head fstrim_list; /* in-flight discard from fstrim */ + wait_queue_head_t discard_wait_queue; /* waiting queue for wake-up */ + struct mutex cmd_lock; + unsigned int nr_discards; /* # of discards in the list */ + unsigned int max_discards; /* max. discards to be issued */ + unsigned int max_discard_request; /* max. discard request per round */ + unsigned int min_discard_issue_time; /* min. interval between discard issue */ + unsigned int mid_discard_issue_time; /* mid. interval between discard issue */ + unsigned int max_discard_issue_time; /* max. interval between discard issue */ + unsigned int discard_io_aware_gran; /* minimum discard granularity not be aware of I/O */ + unsigned int discard_urgent_util; /* utilization which issue discard proactively */ + unsigned int discard_granularity; /* discard granularity */ + unsigned int max_ordered_discard; /* maximum discard granularity issued by lba order */ + unsigned int undiscard_blks; /* # of undiscard blocks */ + unsigned int next_pos; /* next discard position */ + atomic_t issued_discard; /* # of issued discard */ + atomic_t queued_discard; /* # of queued discard */ + atomic_t discard_cmd_cnt; /* # of cached cmd count */ + struct rb_root_cached root; /* root of discard rb-tree */ + bool rbtree_check; /* config for consistence check */ + bool discard_wake; /* to wake up discard thread */ +}; + +/* for the list of fsync inodes, used only during recovery */ +struct fsync_inode_entry { + struct list_head list; /* list head */ + struct inode *inode; /* vfs inode pointer */ + block_t blkaddr; /* block address locating the last fsync */ + block_t last_dentry; /* block address locating the last dentry */ +}; + +#define nats_in_cursum(jnl) (le16_to_cpu((jnl)->n_nats)) +#define sits_in_cursum(jnl) (le16_to_cpu((jnl)->n_sits)) + +#define nat_in_journal(jnl, i) ((jnl)->nat_j.entries[i].ne) +#define nid_in_journal(jnl, i) ((jnl)->nat_j.entries[i].nid) +#define sit_in_journal(jnl, i) ((jnl)->sit_j.entries[i].se) +#define segno_in_journal(jnl, i) ((jnl)->sit_j.entries[i].segno) + +#define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl)) +#define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl)) + +static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i) +{ + int before = nats_in_cursum(journal); + + journal->n_nats = cpu_to_le16(before + i); + return before; +} + +static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i) +{ + int before = sits_in_cursum(journal); + + journal->n_sits = cpu_to_le16(before + i); + return before; +} + +static inline bool __has_cursum_space(struct f2fs_journal *journal, + int size, int type) +{ + if (type == NAT_JOURNAL) + return size <= MAX_NAT_JENTRIES(journal); + return size <= MAX_SIT_JENTRIES(journal); +} + +/* for inline stuff */ +#define DEF_INLINE_RESERVED_SIZE 1 +static inline int get_extra_isize(struct inode *inode); +static inline int get_inline_xattr_addrs(struct inode *inode); +#define MAX_INLINE_DATA(inode) (sizeof(__le32) * \ + (CUR_ADDRS_PER_INODE(inode) - \ + get_inline_xattr_addrs(inode) - \ + DEF_INLINE_RESERVED_SIZE)) + +/* for inline dir */ +#define NR_INLINE_DENTRY(inode) (MAX_INLINE_DATA(inode) * BITS_PER_BYTE / \ + ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \ + BITS_PER_BYTE + 1)) +#define INLINE_DENTRY_BITMAP_SIZE(inode) \ + DIV_ROUND_UP(NR_INLINE_DENTRY(inode), BITS_PER_BYTE) +#define INLINE_RESERVED_SIZE(inode) (MAX_INLINE_DATA(inode) - \ + ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \ + NR_INLINE_DENTRY(inode) + \ + INLINE_DENTRY_BITMAP_SIZE(inode))) + +/* + * For INODE and NODE manager + */ +/* for directory operations */ + +struct f2fs_filename { + /* + * The filename the user specified. This is NULL for some + * filesystem-internal operations, e.g. converting an inline directory + * to a non-inline one, or roll-forward recovering an encrypted dentry. + */ + const struct qstr *usr_fname; + + /* + * The on-disk filename. For encrypted directories, this is encrypted. + * This may be NULL for lookups in an encrypted dir without the key. + */ + struct fscrypt_str disk_name; + + /* The dirhash of this filename */ + f2fs_hash_t hash; + +#ifdef CONFIG_FS_ENCRYPTION + /* + * For lookups in encrypted directories: either the buffer backing + * disk_name, or a buffer that holds the decoded no-key name. + */ + struct fscrypt_str crypto_buf; +#endif +#if IS_ENABLED(CONFIG_UNICODE) + /* + * For casefolded directories: the casefolded name, but it's left NULL + * if the original name is not valid Unicode, if the original name is + * "." or "..", if the directory is both casefolded and encrypted and + * its encryption key is unavailable, or if the filesystem is doing an + * internal operation where usr_fname is also NULL. In all these cases + * we fall back to treating the name as an opaque byte sequence. + */ + struct fscrypt_str cf_name; +#endif +}; + +struct f2fs_dentry_ptr { + struct inode *inode; + void *bitmap; + struct f2fs_dir_entry *dentry; + __u8 (*filename)[F2FS_SLOT_LEN]; + int max; + int nr_bitmap; +}; + +static inline void make_dentry_ptr_block(struct inode *inode, + struct f2fs_dentry_ptr *d, struct f2fs_dentry_block *t) +{ + d->inode = inode; + d->max = NR_DENTRY_IN_BLOCK; + d->nr_bitmap = SIZE_OF_DENTRY_BITMAP; + d->bitmap = t->dentry_bitmap; + d->dentry = t->dentry; + d->filename = t->filename; +} + +static inline void make_dentry_ptr_inline(struct inode *inode, + struct f2fs_dentry_ptr *d, void *t) +{ + int entry_cnt = NR_INLINE_DENTRY(inode); + int bitmap_size = INLINE_DENTRY_BITMAP_SIZE(inode); + int reserved_size = INLINE_RESERVED_SIZE(inode); + + d->inode = inode; + d->max = entry_cnt; + d->nr_bitmap = bitmap_size; + d->bitmap = t; + d->dentry = t + bitmap_size + reserved_size; + d->filename = t + bitmap_size + reserved_size + + SIZE_OF_DIR_ENTRY * entry_cnt; +} + +/* + * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1 + * as its node offset to distinguish from index node blocks. + * But some bits are used to mark the node block. + */ +#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ + >> OFFSET_BIT_SHIFT) +enum { + ALLOC_NODE, /* allocate a new node page if needed */ + LOOKUP_NODE, /* look up a node without readahead */ + LOOKUP_NODE_RA, /* + * look up a node with readahead called + * by get_data_block. + */ +}; + +#define DEFAULT_RETRY_IO_COUNT 8 /* maximum retry read IO or flush count */ + +/* congestion wait timeout value, default: 20ms */ +#define DEFAULT_IO_TIMEOUT (msecs_to_jiffies(20)) + +/* maximum retry quota flush count */ +#define DEFAULT_RETRY_QUOTA_FLUSH_COUNT 8 + +/* maximum retry of EIO'ed page */ +#define MAX_RETRY_PAGE_EIO 100 + +#define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */ + +#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */ + +/* dirty segments threshold for triggering CP */ +#define DEFAULT_DIRTY_THRESHOLD 4 + +#define RECOVERY_MAX_RA_BLOCKS BIO_MAX_VECS +#define RECOVERY_MIN_RA_BLOCKS 1 + +#define F2FS_ONSTACK_PAGES 16 /* nr of onstack pages */ + +/* for in-memory extent cache entry */ +#define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */ + +/* number of extent info in extent cache we try to shrink */ +#define READ_EXTENT_CACHE_SHRINK_NUMBER 128 + +/* number of age extent info in extent cache we try to shrink */ +#define AGE_EXTENT_CACHE_SHRINK_NUMBER 128 +#define LAST_AGE_WEIGHT 30 +#define SAME_AGE_REGION 1024 + +/* + * Define data block with age less than 1GB as hot data + * define data block with age less than 10GB but more than 1GB as warm data + */ +#define DEF_HOT_DATA_AGE_THRESHOLD 262144 +#define DEF_WARM_DATA_AGE_THRESHOLD 2621440 + +/* extent cache type */ +enum extent_type { + EX_READ, + EX_BLOCK_AGE, + NR_EXTENT_CACHES, +}; + +struct extent_info { + unsigned int fofs; /* start offset in a file */ + unsigned int len; /* length of the extent */ + union { + /* read extent_cache */ + struct { + /* start block address of the extent */ + block_t blk; +#ifdef CONFIG_F2FS_FS_COMPRESSION + /* physical extent length of compressed blocks */ + unsigned int c_len; +#endif + }; + /* block age extent_cache */ + struct { + /* block age of the extent */ + unsigned long long age; + /* last total blocks allocated */ + unsigned long long last_blocks; + }; + }; +}; + +struct extent_node { + struct rb_node rb_node; /* rb node located in rb-tree */ + struct extent_info ei; /* extent info */ + struct list_head list; /* node in global extent list of sbi */ + struct extent_tree *et; /* extent tree pointer */ +}; + +struct extent_tree { + nid_t ino; /* inode number */ + enum extent_type type; /* keep the extent tree type */ + struct rb_root_cached root; /* root of extent info rb-tree */ + struct extent_node *cached_en; /* recently accessed extent node */ + struct list_head list; /* to be used by sbi->zombie_list */ + rwlock_t lock; /* protect extent info rb-tree */ + atomic_t node_cnt; /* # of extent node in rb-tree*/ + bool largest_updated; /* largest extent updated */ + struct extent_info largest; /* largest cached extent for EX_READ */ +}; + +struct extent_tree_info { + struct radix_tree_root extent_tree_root;/* cache extent cache entries */ + struct mutex extent_tree_lock; /* locking extent radix tree */ + struct list_head extent_list; /* lru list for shrinker */ + spinlock_t extent_lock; /* locking extent lru list */ + atomic_t total_ext_tree; /* extent tree count */ + struct list_head zombie_list; /* extent zombie tree list */ + atomic_t total_zombie_tree; /* extent zombie tree count */ + atomic_t total_ext_node; /* extent info count */ +}; + +/* + * State of block returned by f2fs_map_blocks. + */ +#define F2FS_MAP_NEW (1U << 0) +#define F2FS_MAP_MAPPED (1U << 1) +#define F2FS_MAP_DELALLOC (1U << 2) +#define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\ + F2FS_MAP_DELALLOC) + +struct f2fs_map_blocks { + struct block_device *m_bdev; /* for multi-device dio */ + block_t m_pblk; + block_t m_lblk; + unsigned int m_len; + unsigned int m_flags; + pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */ + pgoff_t *m_next_extent; /* point to next possible extent */ + int m_seg_type; + bool m_may_create; /* indicate it is from write path */ + bool m_multidev_dio; /* indicate it allows multi-device dio */ +}; + +/* for flag in get_data_block */ +enum { + F2FS_GET_BLOCK_DEFAULT, + F2FS_GET_BLOCK_FIEMAP, + F2FS_GET_BLOCK_BMAP, + F2FS_GET_BLOCK_DIO, + F2FS_GET_BLOCK_PRE_DIO, + F2FS_GET_BLOCK_PRE_AIO, + F2FS_GET_BLOCK_PRECACHE, +}; + +/* + * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. + */ +#define FADVISE_COLD_BIT 0x01 +#define FADVISE_LOST_PINO_BIT 0x02 +#define FADVISE_ENCRYPT_BIT 0x04 +#define FADVISE_ENC_NAME_BIT 0x08 +#define FADVISE_KEEP_SIZE_BIT 0x10 +#define FADVISE_HOT_BIT 0x20 +#define FADVISE_VERITY_BIT 0x40 +#define FADVISE_TRUNC_BIT 0x80 + +#define FADVISE_MODIFIABLE_BITS (FADVISE_COLD_BIT | FADVISE_HOT_BIT) + +#define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT) +#define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT) +#define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT) + +#define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT) +#define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT) +#define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT) + +#define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT) +#define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT) + +#define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT) +#define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT) + +#define file_keep_isize(inode) is_file(inode, FADVISE_KEEP_SIZE_BIT) +#define file_set_keep_isize(inode) set_file(inode, FADVISE_KEEP_SIZE_BIT) + +#define file_is_hot(inode) is_file(inode, FADVISE_HOT_BIT) +#define file_set_hot(inode) set_file(inode, FADVISE_HOT_BIT) +#define file_clear_hot(inode) clear_file(inode, FADVISE_HOT_BIT) + +#define file_is_verity(inode) is_file(inode, FADVISE_VERITY_BIT) +#define file_set_verity(inode) set_file(inode, FADVISE_VERITY_BIT) + +#define file_should_truncate(inode) is_file(inode, FADVISE_TRUNC_BIT) +#define file_need_truncate(inode) set_file(inode, FADVISE_TRUNC_BIT) +#define file_dont_truncate(inode) clear_file(inode, FADVISE_TRUNC_BIT) + +#define DEF_DIR_LEVEL 0 + +enum { + GC_FAILURE_PIN, + MAX_GC_FAILURE +}; + +/* used for f2fs_inode_info->flags */ +enum { + FI_NEW_INODE, /* indicate newly allocated inode */ + FI_DIRTY_INODE, /* indicate inode is dirty or not */ + FI_AUTO_RECOVER, /* indicate inode is recoverable */ + FI_DIRTY_DIR, /* indicate directory has dirty pages */ + FI_INC_LINK, /* need to increment i_nlink */ + FI_ACL_MODE, /* indicate acl mode */ + FI_NO_ALLOC, /* should not allocate any blocks */ + FI_FREE_NID, /* free allocated nide */ + FI_NO_EXTENT, /* not to use the extent cache */ + FI_INLINE_XATTR, /* used for inline xattr */ + FI_INLINE_DATA, /* used for inline data*/ + FI_INLINE_DENTRY, /* used for inline dentry */ + FI_APPEND_WRITE, /* inode has appended data */ + FI_UPDATE_WRITE, /* inode has in-place-update data */ + FI_NEED_IPU, /* used for ipu per file */ + FI_ATOMIC_FILE, /* indicate atomic file */ + FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */ + FI_DROP_CACHE, /* drop dirty page cache */ + FI_DATA_EXIST, /* indicate data exists */ + FI_INLINE_DOTS, /* indicate inline dot dentries */ + FI_SKIP_WRITES, /* should skip data page writeback */ + FI_OPU_WRITE, /* used for opu per file */ + FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */ + FI_PREALLOCATED_ALL, /* all blocks for write were preallocated */ + FI_HOT_DATA, /* indicate file is hot */ + FI_EXTRA_ATTR, /* indicate file has extra attribute */ + FI_PROJ_INHERIT, /* indicate file inherits projectid */ + FI_PIN_FILE, /* indicate file should not be gced */ + FI_VERITY_IN_PROGRESS, /* building fs-verity Merkle tree */ + FI_COMPRESSED_FILE, /* indicate file's data can be compressed */ + FI_COMPRESS_CORRUPT, /* indicate compressed cluster is corrupted */ + FI_MMAP_FILE, /* indicate file was mmapped */ + FI_ENABLE_COMPRESS, /* enable compression in "user" compression mode */ + FI_COMPRESS_RELEASED, /* compressed blocks were released */ + FI_ALIGNED_WRITE, /* enable aligned write */ + FI_COW_FILE, /* indicate COW file */ + FI_ATOMIC_COMMITTED, /* indicate atomic commit completed except disk sync */ + FI_ATOMIC_REPLACE, /* indicate atomic replace */ + FI_MAX, /* max flag, never be used */ +}; + +struct f2fs_inode_info { + struct inode vfs_inode; /* serve a vfs inode */ + unsigned long i_flags; /* keep an inode flags for ioctl */ + unsigned char i_advise; /* use to give file attribute hints */ + unsigned char i_dir_level; /* use for dentry level for large dir */ + unsigned int i_current_depth; /* only for directory depth */ + /* for gc failure statistic */ + unsigned int i_gc_failures[MAX_GC_FAILURE]; + unsigned int i_pino; /* parent inode number */ + umode_t i_acl_mode; /* keep file acl mode temporarily */ + + /* Use below internally in f2fs*/ + unsigned long flags[BITS_TO_LONGS(FI_MAX)]; /* use to pass per-file flags */ + struct f2fs_rwsem i_sem; /* protect fi info */ + atomic_t dirty_pages; /* # of dirty pages */ + f2fs_hash_t chash; /* hash value of given file name */ + unsigned int clevel; /* maximum level of given file name */ + struct task_struct *task; /* lookup and create consistency */ + struct task_struct *cp_task; /* separate cp/wb IO stats*/ + struct task_struct *wb_task; /* indicate inode is in context of writeback */ + nid_t i_xattr_nid; /* node id that contains xattrs */ + loff_t last_disk_size; /* lastly written file size */ + spinlock_t i_size_lock; /* protect last_disk_size */ + +#ifdef CONFIG_QUOTA + struct dquot *i_dquot[MAXQUOTAS]; + + /* quota space reservation, managed internally by quota code */ + qsize_t i_reserved_quota; +#endif + struct list_head dirty_list; /* dirty list for dirs and files */ + struct list_head gdirty_list; /* linked in global dirty list */ + struct task_struct *atomic_write_task; /* store atomic write task */ + struct extent_tree *extent_tree[NR_EXTENT_CACHES]; + /* cached extent_tree entry */ + struct inode *cow_inode; /* copy-on-write inode for atomic write */ + + /* avoid racing between foreground op and gc */ + struct f2fs_rwsem i_gc_rwsem[2]; + struct f2fs_rwsem i_xattr_sem; /* avoid racing between reading and changing EAs */ + + int i_extra_isize; /* size of extra space located in i_addr */ + kprojid_t i_projid; /* id for project quota */ + int i_inline_xattr_size; /* inline xattr size */ + struct timespec64 i_crtime; /* inode creation time */ + struct timespec64 i_disk_time[3];/* inode disk times */ + + /* for file compress */ + atomic_t i_compr_blocks; /* # of compressed blocks */ + unsigned char i_compress_algorithm; /* algorithm type */ + unsigned char i_log_cluster_size; /* log of cluster size */ + unsigned char i_compress_level; /* compress level (lz4hc,zstd) */ + unsigned char i_compress_flag; /* compress flag */ + unsigned int i_cluster_size; /* cluster size */ + + unsigned int atomic_write_cnt; + loff_t original_i_size; /* original i_size before atomic write */ +}; + +static inline void get_read_extent_info(struct extent_info *ext, + struct f2fs_extent *i_ext) +{ + ext->fofs = le32_to_cpu(i_ext->fofs); + ext->blk = le32_to_cpu(i_ext->blk); + ext->len = le32_to_cpu(i_ext->len); +} + +static inline void set_raw_read_extent(struct extent_info *ext, + struct f2fs_extent *i_ext) +{ + i_ext->fofs = cpu_to_le32(ext->fofs); + i_ext->blk = cpu_to_le32(ext->blk); + i_ext->len = cpu_to_le32(ext->len); +} + +static inline bool __is_discard_mergeable(struct discard_info *back, + struct discard_info *front, unsigned int max_len) +{ + return (back->lstart + back->len == front->lstart) && + (back->len + front->len <= max_len); +} + +static inline bool __is_discard_back_mergeable(struct discard_info *cur, + struct discard_info *back, unsigned int max_len) +{ + return __is_discard_mergeable(back, cur, max_len); +} + +static inline bool __is_discard_front_mergeable(struct discard_info *cur, + struct discard_info *front, unsigned int max_len) +{ + return __is_discard_mergeable(cur, front, max_len); +} + +/* + * For free nid management + */ +enum nid_state { + FREE_NID, /* newly added to free nid list */ + PREALLOC_NID, /* it is preallocated */ + MAX_NID_STATE, +}; + +enum nat_state { + TOTAL_NAT, + DIRTY_NAT, + RECLAIMABLE_NAT, + MAX_NAT_STATE, +}; + +struct f2fs_nm_info { + block_t nat_blkaddr; /* base disk address of NAT */ + nid_t max_nid; /* maximum possible node ids */ + nid_t available_nids; /* # of available node ids */ + nid_t next_scan_nid; /* the next nid to be scanned */ + nid_t max_rf_node_blocks; /* max # of nodes for recovery */ + unsigned int ram_thresh; /* control the memory footprint */ + unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */ + unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */ + + /* NAT cache management */ + struct radix_tree_root nat_root;/* root of the nat entry cache */ + struct radix_tree_root nat_set_root;/* root of the nat set cache */ + struct f2fs_rwsem nat_tree_lock; /* protect nat entry tree */ + struct list_head nat_entries; /* cached nat entry list (clean) */ + spinlock_t nat_list_lock; /* protect clean nat entry list */ + unsigned int nat_cnt[MAX_NAT_STATE]; /* the # of cached nat entries */ + unsigned int nat_blocks; /* # of nat blocks */ + + /* free node ids management */ + struct radix_tree_root free_nid_root;/* root of the free_nid cache */ + struct list_head free_nid_list; /* list for free nids excluding preallocated nids */ + unsigned int nid_cnt[MAX_NID_STATE]; /* the number of free node id */ + spinlock_t nid_list_lock; /* protect nid lists ops */ + struct mutex build_lock; /* lock for build free nids */ + unsigned char **free_nid_bitmap; + unsigned char *nat_block_bitmap; + unsigned short *free_nid_count; /* free nid count of NAT block */ + + /* for checkpoint */ + char *nat_bitmap; /* NAT bitmap pointer */ + + unsigned int nat_bits_blocks; /* # of nat bits blocks */ + unsigned char *nat_bits; /* NAT bits blocks */ + unsigned char *full_nat_bits; /* full NAT pages */ + unsigned char *empty_nat_bits; /* empty NAT pages */ +#ifdef CONFIG_F2FS_CHECK_FS + char *nat_bitmap_mir; /* NAT bitmap mirror */ +#endif + int bitmap_size; /* bitmap size */ +}; + +/* + * this structure is used as one of function parameters. + * all the information are dedicated to a given direct node block determined + * by the data offset in a file. + */ +struct dnode_of_data { + struct inode *inode; /* vfs inode pointer */ + struct page *inode_page; /* its inode page, NULL is possible */ + struct page *node_page; /* cached direct node page */ + nid_t nid; /* node id of the direct node block */ + unsigned int ofs_in_node; /* data offset in the node page */ + bool inode_page_locked; /* inode page is locked or not */ + bool node_changed; /* is node block changed */ + char cur_level; /* level of hole node page */ + char max_level; /* level of current page located */ + block_t data_blkaddr; /* block address of the node block */ +}; + +static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, + struct page *ipage, struct page *npage, nid_t nid) +{ + memset(dn, 0, sizeof(*dn)); + dn->inode = inode; + dn->inode_page = ipage; + dn->node_page = npage; + dn->nid = nid; +} + +/* + * For SIT manager + * + * By default, there are 6 active log areas across the whole main area. + * When considering hot and cold data separation to reduce cleaning overhead, + * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, + * respectively. + * In the current design, you should not change the numbers intentionally. + * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 + * logs individually according to the underlying devices. (default: 6) + * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for + * data and 8 for node logs. + */ +#define NR_CURSEG_DATA_TYPE (3) +#define NR_CURSEG_NODE_TYPE (3) +#define NR_CURSEG_INMEM_TYPE (2) +#define NR_CURSEG_RO_TYPE (2) +#define NR_CURSEG_PERSIST_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) +#define NR_CURSEG_TYPE (NR_CURSEG_INMEM_TYPE + NR_CURSEG_PERSIST_TYPE) + +enum { + CURSEG_HOT_DATA = 0, /* directory entry blocks */ + CURSEG_WARM_DATA, /* data blocks */ + CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ + CURSEG_HOT_NODE, /* direct node blocks of directory files */ + CURSEG_WARM_NODE, /* direct node blocks of normal files */ + CURSEG_COLD_NODE, /* indirect node blocks */ + NR_PERSISTENT_LOG, /* number of persistent log */ + CURSEG_COLD_DATA_PINNED = NR_PERSISTENT_LOG, + /* pinned file that needs consecutive block address */ + CURSEG_ALL_DATA_ATGC, /* SSR alloctor in hot/warm/cold data area */ + NO_CHECK_TYPE, /* number of persistent & inmem log */ +}; + +struct flush_cmd { + struct completion wait; + struct llist_node llnode; + nid_t ino; + int ret; +}; + +struct flush_cmd_control { + struct task_struct *f2fs_issue_flush; /* flush thread */ + wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */ + atomic_t issued_flush; /* # of issued flushes */ + atomic_t queued_flush; /* # of queued flushes */ + struct llist_head issue_list; /* list for command issue */ + struct llist_node *dispatch_list; /* list for command dispatch */ +}; + +struct f2fs_sm_info { + struct sit_info *sit_info; /* whole segment information */ + struct free_segmap_info *free_info; /* free segment information */ + struct dirty_seglist_info *dirty_info; /* dirty segment information */ + struct curseg_info *curseg_array; /* active segment information */ + + struct f2fs_rwsem curseg_lock; /* for preventing curseg change */ + + block_t seg0_blkaddr; /* block address of 0'th segment */ + block_t main_blkaddr; /* start block address of main area */ + block_t ssa_blkaddr; /* start block address of SSA area */ + + unsigned int segment_count; /* total # of segments */ + unsigned int main_segments; /* # of segments in main area */ + unsigned int reserved_segments; /* # of reserved segments */ + unsigned int additional_reserved_segments;/* reserved segs for IO align feature */ + unsigned int ovp_segments; /* # of overprovision segments */ + + /* a threshold to reclaim prefree segments */ + unsigned int rec_prefree_segments; + + struct list_head sit_entry_set; /* sit entry set list */ + + unsigned int ipu_policy; /* in-place-update policy */ + unsigned int min_ipu_util; /* in-place-update threshold */ + unsigned int min_fsync_blocks; /* threshold for fsync */ + unsigned int min_seq_blocks; /* threshold for sequential blocks */ + unsigned int min_hot_blocks; /* threshold for hot block allocation */ + unsigned int min_ssr_sections; /* threshold to trigger SSR allocation */ + + /* for flush command control */ + struct flush_cmd_control *fcc_info; + + /* for discard command control */ + struct discard_cmd_control *dcc_info; +}; + +/* + * For superblock + */ +/* + * COUNT_TYPE for monitoring + * + * f2fs monitors the number of several block types such as on-writeback, + * dirty dentry blocks, dirty node blocks, and dirty meta blocks. + */ +#define WB_DATA_TYPE(p) (__is_cp_guaranteed(p) ? F2FS_WB_CP_DATA : F2FS_WB_DATA) +enum count_type { + F2FS_DIRTY_DENTS, + F2FS_DIRTY_DATA, + F2FS_DIRTY_QDATA, + F2FS_DIRTY_NODES, + F2FS_DIRTY_META, + F2FS_DIRTY_IMETA, + F2FS_WB_CP_DATA, + F2FS_WB_DATA, + F2FS_RD_DATA, + F2FS_RD_NODE, + F2FS_RD_META, + F2FS_DIO_WRITE, + F2FS_DIO_READ, + NR_COUNT_TYPE, +}; + +/* + * The below are the page types of bios used in submit_bio(). + * The available types are: + * DATA User data pages. It operates as async mode. + * NODE Node pages. It operates as async mode. + * META FS metadata pages such as SIT, NAT, CP. + * NR_PAGE_TYPE The number of page types. + * META_FLUSH Make sure the previous pages are written + * with waiting the bio's completion + * ... Only can be used with META. + */ +#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) +enum page_type { + DATA = 0, + NODE = 1, /* should not change this */ + META, + NR_PAGE_TYPE, + META_FLUSH, + IPU, /* the below types are used by tracepoints only. */ + OPU, +}; + +enum temp_type { + HOT = 0, /* must be zero for meta bio */ + WARM, + COLD, + NR_TEMP_TYPE, +}; + +enum need_lock_type { + LOCK_REQ = 0, + LOCK_DONE, + LOCK_RETRY, +}; + +enum cp_reason_type { + CP_NO_NEEDED, + CP_NON_REGULAR, + CP_COMPRESSED, + CP_HARDLINK, + CP_SB_NEED_CP, + CP_WRONG_PINO, + CP_NO_SPC_ROLL, + CP_NODE_NEED_CP, + CP_FASTBOOT_MODE, + CP_SPEC_LOG_NUM, + CP_RECOVER_DIR, +}; + +enum iostat_type { + /* WRITE IO */ + APP_DIRECT_IO, /* app direct write IOs */ + APP_BUFFERED_IO, /* app buffered write IOs */ + APP_WRITE_IO, /* app write IOs */ + APP_MAPPED_IO, /* app mapped IOs */ + APP_BUFFERED_CDATA_IO, /* app buffered write IOs on compressed file */ + APP_MAPPED_CDATA_IO, /* app mapped write IOs on compressed file */ + FS_DATA_IO, /* data IOs from kworker/fsync/reclaimer */ + FS_CDATA_IO, /* data IOs from kworker/fsync/reclaimer on compressed file */ + FS_NODE_IO, /* node IOs from kworker/fsync/reclaimer */ + FS_META_IO, /* meta IOs from kworker/reclaimer */ + FS_GC_DATA_IO, /* data IOs from forground gc */ + FS_GC_NODE_IO, /* node IOs from forground gc */ + FS_CP_DATA_IO, /* data IOs from checkpoint */ + FS_CP_NODE_IO, /* node IOs from checkpoint */ + FS_CP_META_IO, /* meta IOs from checkpoint */ + + /* READ IO */ + APP_DIRECT_READ_IO, /* app direct read IOs */ + APP_BUFFERED_READ_IO, /* app buffered read IOs */ + APP_READ_IO, /* app read IOs */ + APP_MAPPED_READ_IO, /* app mapped read IOs */ + APP_BUFFERED_CDATA_READ_IO, /* app buffered read IOs on compressed file */ + APP_MAPPED_CDATA_READ_IO, /* app mapped read IOs on compressed file */ + FS_DATA_READ_IO, /* data read IOs */ + FS_GDATA_READ_IO, /* data read IOs from background gc */ + FS_CDATA_READ_IO, /* compressed data read IOs */ + FS_NODE_READ_IO, /* node read IOs */ + FS_META_READ_IO, /* meta read IOs */ + + /* other */ + FS_DISCARD_IO, /* discard */ + FS_FLUSH_IO, /* flush */ + FS_ZONE_RESET_IO, /* zone reset */ + NR_IO_TYPE, +}; + +struct f2fs_io_info { + struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */ + nid_t ino; /* inode number */ + enum page_type type; /* contains DATA/NODE/META/META_FLUSH */ + enum temp_type temp; /* contains HOT/WARM/COLD */ + enum req_op op; /* contains REQ_OP_ */ + blk_opf_t op_flags; /* req_flag_bits */ + block_t new_blkaddr; /* new block address to be written */ + block_t old_blkaddr; /* old block address before Cow */ + struct page *page; /* page to be written */ + struct page *encrypted_page; /* encrypted page */ + struct page *compressed_page; /* compressed page */ + struct list_head list; /* serialize IOs */ + unsigned int compr_blocks; /* # of compressed block addresses */ + unsigned int need_lock:8; /* indicate we need to lock cp_rwsem */ + unsigned int version:8; /* version of the node */ + unsigned int submitted:1; /* indicate IO submission */ + unsigned int in_list:1; /* indicate fio is in io_list */ + unsigned int is_por:1; /* indicate IO is from recovery or not */ + unsigned int retry:1; /* need to reallocate block address */ + unsigned int encrypted:1; /* indicate file is encrypted */ + unsigned int post_read:1; /* require post read */ + enum iostat_type io_type; /* io type */ + struct writeback_control *io_wbc; /* writeback control */ + struct bio **bio; /* bio for ipu */ + sector_t *last_block; /* last block number in bio */ +}; + +struct bio_entry { + struct bio *bio; + struct list_head list; +}; + +#define is_read_io(rw) ((rw) == READ) +struct f2fs_bio_info { + struct f2fs_sb_info *sbi; /* f2fs superblock */ + struct bio *bio; /* bios to merge */ + sector_t last_block_in_bio; /* last block number */ + struct f2fs_io_info fio; /* store buffered io info. */ +#ifdef CONFIG_BLK_DEV_ZONED + struct completion zone_wait; /* condition value for the previous open zone to close */ + struct bio *zone_pending_bio; /* pending bio for the previous zone */ + void *bi_private; /* previous bi_private for pending bio */ +#endif + struct f2fs_rwsem io_rwsem; /* blocking op for bio */ + spinlock_t io_lock; /* serialize DATA/NODE IOs */ + struct list_head io_list; /* track fios */ + struct list_head bio_list; /* bio entry list head */ + struct f2fs_rwsem bio_list_lock; /* lock to protect bio entry list */ +}; + +#define FDEV(i) (sbi->devs[i]) +#define RDEV(i) (raw_super->devs[i]) +struct f2fs_dev_info { + struct block_device *bdev; + char path[MAX_PATH_LEN]; + unsigned int total_segments; + block_t start_blk; + block_t end_blk; +#ifdef CONFIG_BLK_DEV_ZONED + unsigned int nr_blkz; /* Total number of zones */ + unsigned long *blkz_seq; /* Bitmap indicating sequential zones */ +#endif +}; + +enum inode_type { + DIR_INODE, /* for dirty dir inode */ + FILE_INODE, /* for dirty regular/symlink inode */ + DIRTY_META, /* for all dirtied inode metadata */ + NR_INODE_TYPE, +}; + +/* for inner inode cache management */ +struct inode_management { + struct radix_tree_root ino_root; /* ino entry array */ + spinlock_t ino_lock; /* for ino entry lock */ + struct list_head ino_list; /* inode list head */ + unsigned long ino_num; /* number of entries */ +}; + +/* for GC_AT */ +struct atgc_management { + bool atgc_enabled; /* ATGC is enabled or not */ + struct rb_root_cached root; /* root of victim rb-tree */ + struct list_head victim_list; /* linked with all victim entries */ + unsigned int victim_count; /* victim count in rb-tree */ + unsigned int candidate_ratio; /* candidate ratio */ + unsigned int max_candidate_count; /* max candidate count */ + unsigned int age_weight; /* age weight, vblock_weight = 100 - age_weight */ + unsigned long long age_threshold; /* age threshold */ +}; + +struct f2fs_gc_control { + unsigned int victim_segno; /* target victim segment number */ + int init_gc_type; /* FG_GC or BG_GC */ + bool no_bg_gc; /* check the space and stop bg_gc */ + bool should_migrate_blocks; /* should migrate blocks */ + bool err_gc_skipped; /* return EAGAIN if GC skipped */ + unsigned int nr_free_secs; /* # of free sections to do GC */ +}; + +/* + * For s_flag in struct f2fs_sb_info + * Modification on enum should be synchronized with s_flag array + */ +enum { + SBI_IS_DIRTY, /* dirty flag for checkpoint */ + SBI_IS_CLOSE, /* specify unmounting */ + SBI_NEED_FSCK, /* need fsck.f2fs to fix */ + SBI_POR_DOING, /* recovery is doing or not */ + SBI_NEED_SB_WRITE, /* need to recover superblock */ + SBI_NEED_CP, /* need to checkpoint */ + SBI_IS_SHUTDOWN, /* shutdown by ioctl */ + SBI_IS_RECOVERED, /* recovered orphan/data */ + SBI_CP_DISABLED, /* CP was disabled last mount */ + SBI_CP_DISABLED_QUICK, /* CP was disabled quickly */ + SBI_QUOTA_NEED_FLUSH, /* need to flush quota info in CP */ + SBI_QUOTA_SKIP_FLUSH, /* skip flushing quota in current CP */ + SBI_QUOTA_NEED_REPAIR, /* quota file may be corrupted */ + SBI_IS_RESIZEFS, /* resizefs is in process */ + SBI_IS_FREEZING, /* freezefs is in process */ + SBI_IS_WRITABLE, /* remove ro mountoption transiently */ + MAX_SBI_FLAG, +}; + +enum { + CP_TIME, + REQ_TIME, + DISCARD_TIME, + GC_TIME, + DISABLE_TIME, + UMOUNT_DISCARD_TIMEOUT, + MAX_TIME, +}; + +/* Note that you need to keep synchronization with this gc_mode_names array */ +enum { + GC_NORMAL, + GC_IDLE_CB, + GC_IDLE_GREEDY, + GC_IDLE_AT, + GC_URGENT_HIGH, + GC_URGENT_LOW, + GC_URGENT_MID, + MAX_GC_MODE, +}; + +enum { + BGGC_MODE_ON, /* background gc is on */ + BGGC_MODE_OFF, /* background gc is off */ + BGGC_MODE_SYNC, /* + * background gc is on, migrating blocks + * like foreground gc + */ +}; + +enum { + FS_MODE_ADAPTIVE, /* use both lfs/ssr allocation */ + FS_MODE_LFS, /* use lfs allocation only */ + FS_MODE_FRAGMENT_SEG, /* segment fragmentation mode */ + FS_MODE_FRAGMENT_BLK, /* block fragmentation mode */ +}; + +enum { + ALLOC_MODE_DEFAULT, /* stay default */ + ALLOC_MODE_REUSE, /* reuse segments as much as possible */ +}; + +enum fsync_mode { + FSYNC_MODE_POSIX, /* fsync follows posix semantics */ + FSYNC_MODE_STRICT, /* fsync behaves in line with ext4 */ + FSYNC_MODE_NOBARRIER, /* fsync behaves nobarrier based on posix */ +}; + +enum { + COMPR_MODE_FS, /* + * automatically compress compression + * enabled files + */ + COMPR_MODE_USER, /* + * automatical compression is disabled. + * user can control the file compression + * using ioctls + */ +}; + +enum { + DISCARD_UNIT_BLOCK, /* basic discard unit is block */ + DISCARD_UNIT_SEGMENT, /* basic discard unit is segment */ + DISCARD_UNIT_SECTION, /* basic discard unit is section */ +}; + +enum { + MEMORY_MODE_NORMAL, /* memory mode for normal devices */ + MEMORY_MODE_LOW, /* memory mode for low memry devices */ +}; + +enum errors_option { + MOUNT_ERRORS_READONLY, /* remount fs ro on errors */ + MOUNT_ERRORS_CONTINUE, /* continue on errors */ + MOUNT_ERRORS_PANIC, /* panic on errors */ +}; + +enum { + BACKGROUND, + FOREGROUND, + MAX_CALL_TYPE, + TOTAL_CALL = FOREGROUND, +}; + +static inline int f2fs_test_bit(unsigned int nr, char *addr); +static inline void f2fs_set_bit(unsigned int nr, char *addr); +static inline void f2fs_clear_bit(unsigned int nr, char *addr); + +/* + * Layout of f2fs page.private: + * + * Layout A: lowest bit should be 1 + * | bit0 = 1 | bit1 | bit2 | ... | bit MAX | private data .... | + * bit 0 PAGE_PRIVATE_NOT_POINTER + * bit 1 PAGE_PRIVATE_DUMMY_WRITE + * bit 2 PAGE_PRIVATE_ONGOING_MIGRATION + * bit 3 PAGE_PRIVATE_INLINE_INODE + * bit 4 PAGE_PRIVATE_REF_RESOURCE + * bit 5- f2fs private data + * + * Layout B: lowest bit should be 0 + * page.private is a wrapped pointer. + */ +enum { + PAGE_PRIVATE_NOT_POINTER, /* private contains non-pointer data */ + PAGE_PRIVATE_DUMMY_WRITE, /* data page for padding aligned IO */ + PAGE_PRIVATE_ONGOING_MIGRATION, /* data page which is on-going migrating */ + PAGE_PRIVATE_INLINE_INODE, /* inode page contains inline data */ + PAGE_PRIVATE_REF_RESOURCE, /* dirty page has referenced resources */ + PAGE_PRIVATE_MAX +}; + +/* For compression */ +enum compress_algorithm_type { + COMPRESS_LZO, + COMPRESS_LZ4, + COMPRESS_ZSTD, + COMPRESS_LZORLE, + COMPRESS_MAX, +}; + +enum compress_flag { + COMPRESS_CHKSUM, + COMPRESS_MAX_FLAG, +}; + +#define COMPRESS_WATERMARK 20 +#define COMPRESS_PERCENT 20 + +#define COMPRESS_DATA_RESERVED_SIZE 4 +struct compress_data { + __le32 clen; /* compressed data size */ + __le32 chksum; /* compressed data chksum */ + __le32 reserved[COMPRESS_DATA_RESERVED_SIZE]; /* reserved */ + u8 cdata[]; /* compressed data */ +}; + +#define COMPRESS_HEADER_SIZE (sizeof(struct compress_data)) + +#define F2FS_COMPRESSED_PAGE_MAGIC 0xF5F2C000 + +#define F2FS_ZSTD_DEFAULT_CLEVEL 1 + +#define COMPRESS_LEVEL_OFFSET 8 + +/* compress context */ +struct compress_ctx { + struct inode *inode; /* inode the context belong to */ + pgoff_t cluster_idx; /* cluster index number */ + unsigned int cluster_size; /* page count in cluster */ + unsigned int log_cluster_size; /* log of cluster size */ + struct page **rpages; /* pages store raw data in cluster */ + unsigned int nr_rpages; /* total page number in rpages */ + struct page **cpages; /* pages store compressed data in cluster */ + unsigned int nr_cpages; /* total page number in cpages */ + unsigned int valid_nr_cpages; /* valid page number in cpages */ + void *rbuf; /* virtual mapped address on rpages */ + struct compress_data *cbuf; /* virtual mapped address on cpages */ + size_t rlen; /* valid data length in rbuf */ + size_t clen; /* valid data length in cbuf */ + void *private; /* payload buffer for specified compression algorithm */ + void *private2; /* extra payload buffer */ +}; + +/* compress context for write IO path */ +struct compress_io_ctx { + u32 magic; /* magic number to indicate page is compressed */ + struct inode *inode; /* inode the context belong to */ + struct page **rpages; /* pages store raw data in cluster */ + unsigned int nr_rpages; /* total page number in rpages */ + atomic_t pending_pages; /* in-flight compressed page count */ +}; + +/* Context for decompressing one cluster on the read IO path */ +struct decompress_io_ctx { + u32 magic; /* magic number to indicate page is compressed */ + struct inode *inode; /* inode the context belong to */ + pgoff_t cluster_idx; /* cluster index number */ + unsigned int cluster_size; /* page count in cluster */ + unsigned int log_cluster_size; /* log of cluster size */ + struct page **rpages; /* pages store raw data in cluster */ + unsigned int nr_rpages; /* total page number in rpages */ + struct page **cpages; /* pages store compressed data in cluster */ + unsigned int nr_cpages; /* total page number in cpages */ + struct page **tpages; /* temp pages to pad holes in cluster */ + void *rbuf; /* virtual mapped address on rpages */ + struct compress_data *cbuf; /* virtual mapped address on cpages */ + size_t rlen; /* valid data length in rbuf */ + size_t clen; /* valid data length in cbuf */ + + /* + * The number of compressed pages remaining to be read in this cluster. + * This is initially nr_cpages. It is decremented by 1 each time a page + * has been read (or failed to be read). When it reaches 0, the cluster + * is decompressed (or an error is reported). + * + * If an error occurs before all the pages have been submitted for I/O, + * then this will never reach 0. In this case the I/O submitter is + * responsible for calling f2fs_decompress_end_io() instead. + */ + atomic_t remaining_pages; + + /* + * Number of references to this decompress_io_ctx. + * + * One reference is held for I/O completion. This reference is dropped + * after the pagecache pages are updated and unlocked -- either after + * decompression (and verity if enabled), or after an error. + * + * In addition, each compressed page holds a reference while it is in a + * bio. These references are necessary prevent compressed pages from + * being freed while they are still in a bio. + */ + refcount_t refcnt; + + bool failed; /* IO error occurred before decompression? */ + bool need_verity; /* need fs-verity verification after decompression? */ + void *private; /* payload buffer for specified decompression algorithm */ + void *private2; /* extra payload buffer */ + struct work_struct verity_work; /* work to verify the decompressed pages */ + struct work_struct free_work; /* work for late free this structure itself */ +}; + +#define NULL_CLUSTER ((unsigned int)(~0)) +#define MIN_COMPRESS_LOG_SIZE 2 +#define MAX_COMPRESS_LOG_SIZE 8 +#define MAX_COMPRESS_WINDOW_SIZE(log_size) ((PAGE_SIZE) << (log_size)) + +struct f2fs_sb_info { + struct super_block *sb; /* pointer to VFS super block */ + struct proc_dir_entry *s_proc; /* proc entry */ + struct f2fs_super_block *raw_super; /* raw super block pointer */ + struct f2fs_rwsem sb_lock; /* lock for raw super block */ + int valid_super_block; /* valid super block no */ + unsigned long s_flag; /* flags for sbi */ + struct mutex writepages; /* mutex for writepages() */ + +#ifdef CONFIG_BLK_DEV_ZONED + unsigned int blocks_per_blkz; /* F2FS blocks per zone */ +#endif + + /* for node-related operations */ + struct f2fs_nm_info *nm_info; /* node manager */ + struct inode *node_inode; /* cache node blocks */ + + /* for segment-related operations */ + struct f2fs_sm_info *sm_info; /* segment manager */ + + /* for bio operations */ + struct f2fs_bio_info *write_io[NR_PAGE_TYPE]; /* for write bios */ + /* keep migration IO order for LFS mode */ + struct f2fs_rwsem io_order_lock; + mempool_t *write_io_dummy; /* Dummy pages */ + pgoff_t page_eio_ofs[NR_PAGE_TYPE]; /* EIO page offset */ + int page_eio_cnt[NR_PAGE_TYPE]; /* EIO count */ + + /* for checkpoint */ + struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ + int cur_cp_pack; /* remain current cp pack */ + spinlock_t cp_lock; /* for flag in ckpt */ + struct inode *meta_inode; /* cache meta blocks */ + struct f2fs_rwsem cp_global_sem; /* checkpoint procedure lock */ + struct f2fs_rwsem cp_rwsem; /* blocking FS operations */ + struct f2fs_rwsem node_write; /* locking node writes */ + struct f2fs_rwsem node_change; /* locking node change */ + wait_queue_head_t cp_wait; + unsigned long last_time[MAX_TIME]; /* to store time in jiffies */ + long interval_time[MAX_TIME]; /* to store thresholds */ + struct ckpt_req_control cprc_info; /* for checkpoint request control */ + + struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */ + + spinlock_t fsync_node_lock; /* for node entry lock */ + struct list_head fsync_node_list; /* node list head */ + unsigned int fsync_seg_id; /* sequence id */ + unsigned int fsync_node_num; /* number of node entries */ + + /* for orphan inode, use 0'th array */ + unsigned int max_orphans; /* max orphan inodes */ + + /* for inode management */ + struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */ + spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */ + struct mutex flush_lock; /* for flush exclusion */ + + /* for extent tree cache */ + struct extent_tree_info extent_tree[NR_EXTENT_CACHES]; + atomic64_t allocated_data_blocks; /* for block age extent_cache */ + + /* The threshold used for hot and warm data seperation*/ + unsigned int hot_data_age_threshold; + unsigned int warm_data_age_threshold; + unsigned int last_age_weight; + + /* basic filesystem units */ + unsigned int log_sectors_per_block; /* log2 sectors per block */ + unsigned int log_blocksize; /* log2 block size */ + unsigned int blocksize; /* block size */ + unsigned int root_ino_num; /* root inode number*/ + unsigned int node_ino_num; /* node inode number*/ + unsigned int meta_ino_num; /* meta inode number*/ + unsigned int log_blocks_per_seg; /* log2 blocks per segment */ + unsigned int blocks_per_seg; /* blocks per segment */ + unsigned int unusable_blocks_per_sec; /* unusable blocks per section */ + unsigned int segs_per_sec; /* segments per section */ + unsigned int secs_per_zone; /* sections per zone */ + unsigned int total_sections; /* total section count */ + unsigned int total_node_count; /* total node block count */ + unsigned int total_valid_node_count; /* valid node block count */ + int dir_level; /* directory level */ + bool readdir_ra; /* readahead inode in readdir */ + u64 max_io_bytes; /* max io bytes to merge IOs */ + + block_t user_block_count; /* # of user blocks */ + block_t total_valid_block_count; /* # of valid blocks */ + block_t discard_blks; /* discard command candidats */ + block_t last_valid_block_count; /* for recovery */ + block_t reserved_blocks; /* configurable reserved blocks */ + block_t current_reserved_blocks; /* current reserved blocks */ + + /* Additional tracking for no checkpoint mode */ + block_t unusable_block_count; /* # of blocks saved by last cp */ + + unsigned int nquota_files; /* # of quota sysfile */ + struct f2fs_rwsem quota_sem; /* blocking cp for flags */ + + /* # of pages, see count_type */ + atomic_t nr_pages[NR_COUNT_TYPE]; + /* # of allocated blocks */ + struct percpu_counter alloc_valid_block_count; + /* # of node block writes as roll forward recovery */ + struct percpu_counter rf_node_block_count; + + /* writeback control */ + atomic_t wb_sync_req[META]; /* count # of WB_SYNC threads */ + + /* valid inode count */ + struct percpu_counter total_valid_inode_count; + + struct f2fs_mount_info mount_opt; /* mount options */ + + /* for cleaning operations */ + struct f2fs_rwsem gc_lock; /* + * semaphore for GC, avoid + * race between GC and GC or CP + */ + struct f2fs_gc_kthread *gc_thread; /* GC thread */ + struct atgc_management am; /* atgc management */ + unsigned int cur_victim_sec; /* current victim section num */ + unsigned int gc_mode; /* current GC state */ + unsigned int next_victim_seg[2]; /* next segment in victim section */ + spinlock_t gc_remaining_trials_lock; + /* remaining trial count for GC_URGENT_* and GC_IDLE_* */ + unsigned int gc_remaining_trials; + + /* for skip statistic */ + unsigned long long skipped_gc_rwsem; /* FG_GC only */ + + /* threshold for gc trials on pinned files */ + u64 gc_pin_file_threshold; + struct f2fs_rwsem pin_sem; + + /* maximum # of trials to find a victim segment for SSR and GC */ + unsigned int max_victim_search; + /* migration granularity of garbage collection, unit: segment */ + unsigned int migration_granularity; + + /* + * for stat information. + * one is for the LFS mode, and the other is for the SSR mode. + */ +#ifdef CONFIG_F2FS_STAT_FS + struct f2fs_stat_info *stat_info; /* FS status information */ + atomic_t meta_count[META_MAX]; /* # of meta blocks */ + unsigned int segment_count[2]; /* # of allocated segments */ + unsigned int block_count[2]; /* # of allocated blocks */ + atomic_t inplace_count; /* # of inplace update */ + /* # of lookup extent cache */ + atomic64_t total_hit_ext[NR_EXTENT_CACHES]; + /* # of hit rbtree extent node */ + atomic64_t read_hit_rbtree[NR_EXTENT_CACHES]; + /* # of hit cached extent node */ + atomic64_t read_hit_cached[NR_EXTENT_CACHES]; + /* # of hit largest extent node in read extent cache */ + atomic64_t read_hit_largest; + atomic_t inline_xattr; /* # of inline_xattr inodes */ + atomic_t inline_inode; /* # of inline_data inodes */ + atomic_t inline_dir; /* # of inline_dentry inodes */ + atomic_t compr_inode; /* # of compressed inodes */ + atomic64_t compr_blocks; /* # of compressed blocks */ + atomic_t swapfile_inode; /* # of swapfile inodes */ + atomic_t atomic_files; /* # of opened atomic file */ + atomic_t max_aw_cnt; /* max # of atomic writes */ + unsigned int io_skip_bggc; /* skip background gc for in-flight IO */ + unsigned int other_skip_bggc; /* skip background gc for other reasons */ + unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */ + atomic_t cp_call_count[MAX_CALL_TYPE]; /* # of cp call */ +#endif + spinlock_t stat_lock; /* lock for stat operations */ + + /* to attach REQ_META|REQ_FUA flags */ + unsigned int data_io_flag; + unsigned int node_io_flag; + + /* For sysfs support */ + struct kobject s_kobj; /* /sys/fs/f2fs/<devname> */ + struct completion s_kobj_unregister; + + struct kobject s_stat_kobj; /* /sys/fs/f2fs/<devname>/stat */ + struct completion s_stat_kobj_unregister; + + struct kobject s_feature_list_kobj; /* /sys/fs/f2fs/<devname>/feature_list */ + struct completion s_feature_list_kobj_unregister; + + /* For shrinker support */ + struct list_head s_list; + struct mutex umount_mutex; + unsigned int shrinker_run_no; + + /* For multi devices */ + int s_ndevs; /* number of devices */ + struct f2fs_dev_info *devs; /* for device list */ + unsigned int dirty_device; /* for checkpoint data flush */ + spinlock_t dev_lock; /* protect dirty_device */ + bool aligned_blksize; /* all devices has the same logical blksize */ + + /* For write statistics */ + u64 sectors_written_start; + u64 kbytes_written; + + /* Reference to checksum algorithm driver via cryptoapi */ + struct crypto_shash *s_chksum_driver; + + /* Precomputed FS UUID checksum for seeding other checksums */ + __u32 s_chksum_seed; + + struct workqueue_struct *post_read_wq; /* post read workqueue */ + + /* + * If we are in irq context, let's update error information into + * on-disk superblock in the work. + */ + struct work_struct s_error_work; + unsigned char errors[MAX_F2FS_ERRORS]; /* error flags */ + unsigned char stop_reason[MAX_STOP_REASON]; /* stop reason */ + spinlock_t error_lock; /* protect errors/stop_reason array */ + bool error_dirty; /* errors of sb is dirty */ + + struct kmem_cache *inline_xattr_slab; /* inline xattr entry */ + unsigned int inline_xattr_slab_size; /* default inline xattr slab size */ + + /* For reclaimed segs statistics per each GC mode */ + unsigned int gc_segment_mode; /* GC state for reclaimed segments */ + unsigned int gc_reclaimed_segs[MAX_GC_MODE]; /* Reclaimed segs for each mode */ + + unsigned long seq_file_ra_mul; /* multiplier for ra_pages of seq. files in fadvise */ + + int max_fragment_chunk; /* max chunk size for block fragmentation mode */ + int max_fragment_hole; /* max hole size for block fragmentation mode */ + + /* For atomic write statistics */ + atomic64_t current_atomic_write; + s64 peak_atomic_write; + u64 committed_atomic_block; + u64 revoked_atomic_block; + +#ifdef CONFIG_F2FS_FS_COMPRESSION + struct kmem_cache *page_array_slab; /* page array entry */ + unsigned int page_array_slab_size; /* default page array slab size */ + + /* For runtime compression statistics */ + u64 compr_written_block; + u64 compr_saved_block; + u32 compr_new_inode; + + /* For compressed block cache */ + struct inode *compress_inode; /* cache compressed blocks */ + unsigned int compress_percent; /* cache page percentage */ + unsigned int compress_watermark; /* cache page watermark */ + atomic_t compress_page_hit; /* cache hit count */ +#endif + +#ifdef CONFIG_F2FS_IOSTAT + /* For app/fs IO statistics */ + spinlock_t iostat_lock; + unsigned long long iostat_count[NR_IO_TYPE]; + unsigned long long iostat_bytes[NR_IO_TYPE]; + unsigned long long prev_iostat_bytes[NR_IO_TYPE]; + bool iostat_enable; + unsigned long iostat_next_period; + unsigned int iostat_period_ms; + + /* For io latency related statistics info in one iostat period */ + spinlock_t iostat_lat_lock; + struct iostat_lat_info *iostat_io_lat; +#endif +}; + +#ifdef CONFIG_F2FS_FAULT_INJECTION +#define time_to_inject(sbi, type) __time_to_inject(sbi, type, __func__, \ + __builtin_return_address(0)) +static inline bool __time_to_inject(struct f2fs_sb_info *sbi, int type, + const char *func, const char *parent_func) +{ + struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info; + + if (!ffi->inject_rate) + return false; + + if (!IS_FAULT_SET(ffi, type)) + return false; + + atomic_inc(&ffi->inject_ops); + if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) { + atomic_set(&ffi->inject_ops, 0); + printk_ratelimited("%sF2FS-fs (%s) : inject %s in %s of %pS\n", + KERN_INFO, sbi->sb->s_id, f2fs_fault_name[type], + func, parent_func); + return true; + } + return false; +} +#else +static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type) +{ + return false; +} +#endif + +/* + * Test if the mounted volume is a multi-device volume. + * - For a single regular disk volume, sbi->s_ndevs is 0. + * - For a single zoned disk volume, sbi->s_ndevs is 1. + * - For a multi-device volume, sbi->s_ndevs is always 2 or more. + */ +static inline bool f2fs_is_multi_device(struct f2fs_sb_info *sbi) +{ + return sbi->s_ndevs > 1; +} + +static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type) +{ + unsigned long now = jiffies; + + sbi->last_time[type] = now; + + /* DISCARD_TIME and GC_TIME are based on REQ_TIME */ + if (type == REQ_TIME) { + sbi->last_time[DISCARD_TIME] = now; + sbi->last_time[GC_TIME] = now; + } +} + +static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type) +{ + unsigned long interval = sbi->interval_time[type] * HZ; + + return time_after(jiffies, sbi->last_time[type] + interval); +} + +static inline unsigned int f2fs_time_to_wait(struct f2fs_sb_info *sbi, + int type) +{ + unsigned long interval = sbi->interval_time[type] * HZ; + unsigned int wait_ms = 0; + long delta; + + delta = (sbi->last_time[type] + interval) - jiffies; + if (delta > 0) + wait_ms = jiffies_to_msecs(delta); + + return wait_ms; +} + +/* + * Inline functions + */ +static inline u32 __f2fs_crc32(struct f2fs_sb_info *sbi, u32 crc, + const void *address, unsigned int length) +{ + struct { + struct shash_desc shash; + char ctx[4]; + } desc; + int err; + + BUG_ON(crypto_shash_descsize(sbi->s_chksum_driver) != sizeof(desc.ctx)); + + desc.shash.tfm = sbi->s_chksum_driver; + *(u32 *)desc.ctx = crc; + + err = crypto_shash_update(&desc.shash, address, length); + BUG_ON(err); + + return *(u32 *)desc.ctx; +} + +static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address, + unsigned int length) +{ + return __f2fs_crc32(sbi, F2FS_SUPER_MAGIC, address, length); +} + +static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc, + void *buf, size_t buf_size) +{ + return f2fs_crc32(sbi, buf, buf_size) == blk_crc; +} + +static inline u32 f2fs_chksum(struct f2fs_sb_info *sbi, u32 crc, + const void *address, unsigned int length) +{ + return __f2fs_crc32(sbi, crc, address, length); +} + +static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) +{ + return container_of(inode, struct f2fs_inode_info, vfs_inode); +} + +static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) +{ + return sb->s_fs_info; +} + +static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode) +{ + return F2FS_SB(inode->i_sb); +} + +static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping) +{ + return F2FS_I_SB(mapping->host); +} + +static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page) +{ + return F2FS_M_SB(page_file_mapping(page)); +} + +static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) +{ + return (struct f2fs_super_block *)(sbi->raw_super); +} + +static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) +{ + return (struct f2fs_checkpoint *)(sbi->ckpt); +} + +static inline struct f2fs_node *F2FS_NODE(struct page *page) +{ + return (struct f2fs_node *)page_address(page); +} + +static inline struct f2fs_inode *F2FS_INODE(struct page *page) +{ + return &((struct f2fs_node *)page_address(page))->i; +} + +static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) +{ + return (struct f2fs_nm_info *)(sbi->nm_info); +} + +static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) +{ + return (struct f2fs_sm_info *)(sbi->sm_info); +} + +static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) +{ + return (struct sit_info *)(SM_I(sbi)->sit_info); +} + +static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) +{ + return (struct free_segmap_info *)(SM_I(sbi)->free_info); +} + +static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) +{ + return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); +} + +static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi) +{ + return sbi->meta_inode->i_mapping; +} + +static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi) +{ + return sbi->node_inode->i_mapping; +} + +static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type) +{ + return test_bit(type, &sbi->s_flag); +} + +static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type) +{ + set_bit(type, &sbi->s_flag); +} + +static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type) +{ + clear_bit(type, &sbi->s_flag); +} + +static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) +{ + return le64_to_cpu(cp->checkpoint_ver); +} + +static inline unsigned long f2fs_qf_ino(struct super_block *sb, int type) +{ + if (type < F2FS_MAX_QUOTAS) + return le32_to_cpu(F2FS_SB(sb)->raw_super->qf_ino[type]); + return 0; +} + +static inline __u64 cur_cp_crc(struct f2fs_checkpoint *cp) +{ + size_t crc_offset = le32_to_cpu(cp->checksum_offset); + return le32_to_cpu(*((__le32 *)((unsigned char *)cp + crc_offset))); +} + +static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) +{ + unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); + + return ckpt_flags & f; +} + +static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f) +{ + return __is_set_ckpt_flags(F2FS_CKPT(sbi), f); +} + +static inline void __set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) +{ + unsigned int ckpt_flags; + + ckpt_flags = le32_to_cpu(cp->ckpt_flags); + ckpt_flags |= f; + cp->ckpt_flags = cpu_to_le32(ckpt_flags); +} + +static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f) +{ + unsigned long flags; + + spin_lock_irqsave(&sbi->cp_lock, flags); + __set_ckpt_flags(F2FS_CKPT(sbi), f); + spin_unlock_irqrestore(&sbi->cp_lock, flags); +} + +static inline void __clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) +{ + unsigned int ckpt_flags; + + ckpt_flags = le32_to_cpu(cp->ckpt_flags); + ckpt_flags &= (~f); + cp->ckpt_flags = cpu_to_le32(ckpt_flags); +} + +static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f) +{ + unsigned long flags; + + spin_lock_irqsave(&sbi->cp_lock, flags); + __clear_ckpt_flags(F2FS_CKPT(sbi), f); + spin_unlock_irqrestore(&sbi->cp_lock, flags); +} + +#define init_f2fs_rwsem(sem) \ +do { \ + static struct lock_class_key __key; \ + \ + __init_f2fs_rwsem((sem), #sem, &__key); \ +} while (0) + +static inline void __init_f2fs_rwsem(struct f2fs_rwsem *sem, + const char *sem_name, struct lock_class_key *key) +{ + __init_rwsem(&sem->internal_rwsem, sem_name, key); +#ifdef CONFIG_F2FS_UNFAIR_RWSEM + init_waitqueue_head(&sem->read_waiters); +#endif +} + +static inline int f2fs_rwsem_is_locked(struct f2fs_rwsem *sem) +{ + return rwsem_is_locked(&sem->internal_rwsem); +} + +static inline int f2fs_rwsem_is_contended(struct f2fs_rwsem *sem) +{ + return rwsem_is_contended(&sem->internal_rwsem); +} + +static inline void f2fs_down_read(struct f2fs_rwsem *sem) +{ +#ifdef CONFIG_F2FS_UNFAIR_RWSEM + wait_event(sem->read_waiters, down_read_trylock(&sem->internal_rwsem)); +#else + down_read(&sem->internal_rwsem); +#endif +} + +static inline int f2fs_down_read_trylock(struct f2fs_rwsem *sem) +{ + return down_read_trylock(&sem->internal_rwsem); +} + +static inline void f2fs_up_read(struct f2fs_rwsem *sem) +{ + up_read(&sem->internal_rwsem); +} + +static inline void f2fs_down_write(struct f2fs_rwsem *sem) +{ + down_write(&sem->internal_rwsem); +} + +#ifdef CONFIG_DEBUG_LOCK_ALLOC +static inline void f2fs_down_read_nested(struct f2fs_rwsem *sem, int subclass) +{ + down_read_nested(&sem->internal_rwsem, subclass); +} + +static inline void f2fs_down_write_nested(struct f2fs_rwsem *sem, int subclass) +{ + down_write_nested(&sem->internal_rwsem, subclass); +} +#else +#define f2fs_down_read_nested(sem, subclass) f2fs_down_read(sem) +#define f2fs_down_write_nested(sem, subclass) f2fs_down_write(sem) +#endif + +static inline int f2fs_down_write_trylock(struct f2fs_rwsem *sem) +{ + return down_write_trylock(&sem->internal_rwsem); +} + +static inline void f2fs_up_write(struct f2fs_rwsem *sem) +{ + up_write(&sem->internal_rwsem); +#ifdef CONFIG_F2FS_UNFAIR_RWSEM + wake_up_all(&sem->read_waiters); +#endif +} + +static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) +{ + f2fs_down_read(&sbi->cp_rwsem); +} + +static inline int f2fs_trylock_op(struct f2fs_sb_info *sbi) +{ + if (time_to_inject(sbi, FAULT_LOCK_OP)) + return 0; + return f2fs_down_read_trylock(&sbi->cp_rwsem); +} + +static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) +{ + f2fs_up_read(&sbi->cp_rwsem); +} + +static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) +{ + f2fs_down_write(&sbi->cp_rwsem); +} + +static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) +{ + f2fs_up_write(&sbi->cp_rwsem); +} + +static inline int __get_cp_reason(struct f2fs_sb_info *sbi) +{ + int reason = CP_SYNC; + + if (test_opt(sbi, FASTBOOT)) + reason = CP_FASTBOOT; + if (is_sbi_flag_set(sbi, SBI_IS_CLOSE)) + reason = CP_UMOUNT; + return reason; +} + +static inline bool __remain_node_summaries(int reason) +{ + return (reason & (CP_UMOUNT | CP_FASTBOOT)); +} + +static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi) +{ + return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) || + is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG)); +} + +/* + * Check whether the inode has blocks or not + */ +static inline int F2FS_HAS_BLOCKS(struct inode *inode) +{ + block_t xattr_block = F2FS_I(inode)->i_xattr_nid ? 1 : 0; + + return (inode->i_blocks >> F2FS_LOG_SECTORS_PER_BLOCK) > xattr_block; +} + +static inline bool f2fs_has_xattr_block(unsigned int ofs) +{ + return ofs == XATTR_NODE_OFFSET; +} + +static inline bool __allow_reserved_blocks(struct f2fs_sb_info *sbi, + struct inode *inode, bool cap) +{ + if (!inode) + return true; + if (!test_opt(sbi, RESERVE_ROOT)) + return false; + if (IS_NOQUOTA(inode)) + return true; + if (uid_eq(F2FS_OPTION(sbi).s_resuid, current_fsuid())) + return true; + if (!gid_eq(F2FS_OPTION(sbi).s_resgid, GLOBAL_ROOT_GID) && + in_group_p(F2FS_OPTION(sbi).s_resgid)) + return true; + if (cap && capable(CAP_SYS_RESOURCE)) + return true; + return false; +} + +static inline void f2fs_i_blocks_write(struct inode *, block_t, bool, bool); +static inline int inc_valid_block_count(struct f2fs_sb_info *sbi, + struct inode *inode, blkcnt_t *count) +{ + blkcnt_t diff = 0, release = 0; + block_t avail_user_block_count; + int ret; + + ret = dquot_reserve_block(inode, *count); + if (ret) + return ret; + + if (time_to_inject(sbi, FAULT_BLOCK)) { + release = *count; + goto release_quota; + } + + /* + * let's increase this in prior to actual block count change in order + * for f2fs_sync_file to avoid data races when deciding checkpoint. + */ + percpu_counter_add(&sbi->alloc_valid_block_count, (*count)); + + spin_lock(&sbi->stat_lock); + sbi->total_valid_block_count += (block_t)(*count); + avail_user_block_count = sbi->user_block_count - + sbi->current_reserved_blocks; + + if (!__allow_reserved_blocks(sbi, inode, true)) + avail_user_block_count -= F2FS_OPTION(sbi).root_reserved_blocks; + + if (F2FS_IO_ALIGNED(sbi)) + avail_user_block_count -= sbi->blocks_per_seg * + SM_I(sbi)->additional_reserved_segments; + + if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { + if (avail_user_block_count > sbi->unusable_block_count) + avail_user_block_count -= sbi->unusable_block_count; + else + avail_user_block_count = 0; + } + if (unlikely(sbi->total_valid_block_count > avail_user_block_count)) { + diff = sbi->total_valid_block_count - avail_user_block_count; + if (diff > *count) + diff = *count; + *count -= diff; + release = diff; + sbi->total_valid_block_count -= diff; + if (!*count) { + spin_unlock(&sbi->stat_lock); + goto enospc; + } + } + spin_unlock(&sbi->stat_lock); + + if (unlikely(release)) { + percpu_counter_sub(&sbi->alloc_valid_block_count, release); + dquot_release_reservation_block(inode, release); + } + f2fs_i_blocks_write(inode, *count, true, true); + return 0; + +enospc: + percpu_counter_sub(&sbi->alloc_valid_block_count, release); +release_quota: + dquot_release_reservation_block(inode, release); + return -ENOSPC; +} + +__printf(2, 3) +void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...); + +#define f2fs_err(sbi, fmt, ...) \ + f2fs_printk(sbi, KERN_ERR fmt, ##__VA_ARGS__) +#define f2fs_warn(sbi, fmt, ...) \ + f2fs_printk(sbi, KERN_WARNING fmt, ##__VA_ARGS__) +#define f2fs_notice(sbi, fmt, ...) \ + f2fs_printk(sbi, KERN_NOTICE fmt, ##__VA_ARGS__) +#define f2fs_info(sbi, fmt, ...) \ + f2fs_printk(sbi, KERN_INFO fmt, ##__VA_ARGS__) +#define f2fs_debug(sbi, fmt, ...) \ + f2fs_printk(sbi, KERN_DEBUG fmt, ##__VA_ARGS__) + +#define PAGE_PRIVATE_GET_FUNC(name, flagname) \ +static inline bool page_private_##name(struct page *page) \ +{ \ + return PagePrivate(page) && \ + test_bit(PAGE_PRIVATE_NOT_POINTER, &page_private(page)) && \ + test_bit(PAGE_PRIVATE_##flagname, &page_private(page)); \ +} + +#define PAGE_PRIVATE_SET_FUNC(name, flagname) \ +static inline void set_page_private_##name(struct page *page) \ +{ \ + if (!PagePrivate(page)) \ + attach_page_private(page, (void *)0); \ + set_bit(PAGE_PRIVATE_NOT_POINTER, &page_private(page)); \ + set_bit(PAGE_PRIVATE_##flagname, &page_private(page)); \ +} + +#define PAGE_PRIVATE_CLEAR_FUNC(name, flagname) \ +static inline void clear_page_private_##name(struct page *page) \ +{ \ + clear_bit(PAGE_PRIVATE_##flagname, &page_private(page)); \ + if (page_private(page) == BIT(PAGE_PRIVATE_NOT_POINTER)) \ + detach_page_private(page); \ +} + +PAGE_PRIVATE_GET_FUNC(nonpointer, NOT_POINTER); +PAGE_PRIVATE_GET_FUNC(inline, INLINE_INODE); +PAGE_PRIVATE_GET_FUNC(gcing, ONGOING_MIGRATION); +PAGE_PRIVATE_GET_FUNC(dummy, DUMMY_WRITE); + +PAGE_PRIVATE_SET_FUNC(reference, REF_RESOURCE); +PAGE_PRIVATE_SET_FUNC(inline, INLINE_INODE); +PAGE_PRIVATE_SET_FUNC(gcing, ONGOING_MIGRATION); +PAGE_PRIVATE_SET_FUNC(dummy, DUMMY_WRITE); + +PAGE_PRIVATE_CLEAR_FUNC(reference, REF_RESOURCE); +PAGE_PRIVATE_CLEAR_FUNC(inline, INLINE_INODE); +PAGE_PRIVATE_CLEAR_FUNC(gcing, ONGOING_MIGRATION); +PAGE_PRIVATE_CLEAR_FUNC(dummy, DUMMY_WRITE); + +static inline unsigned long get_page_private_data(struct page *page) +{ + unsigned long data = page_private(page); + + if (!test_bit(PAGE_PRIVATE_NOT_POINTER, &data)) + return 0; + return data >> PAGE_PRIVATE_MAX; +} + +static inline void set_page_private_data(struct page *page, unsigned long data) +{ + if (!PagePrivate(page)) + attach_page_private(page, (void *)0); + set_bit(PAGE_PRIVATE_NOT_POINTER, &page_private(page)); + page_private(page) |= data << PAGE_PRIVATE_MAX; +} + +static inline void clear_page_private_data(struct page *page) +{ + page_private(page) &= GENMASK(PAGE_PRIVATE_MAX - 1, 0); + if (page_private(page) == BIT(PAGE_PRIVATE_NOT_POINTER)) + detach_page_private(page); +} + +static inline void clear_page_private_all(struct page *page) +{ + clear_page_private_data(page); + clear_page_private_reference(page); + clear_page_private_gcing(page); + clear_page_private_inline(page); + + f2fs_bug_on(F2FS_P_SB(page), page_private(page)); +} + +static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, + struct inode *inode, + block_t count) +{ + blkcnt_t sectors = count << F2FS_LOG_SECTORS_PER_BLOCK; + + spin_lock(&sbi->stat_lock); + f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count); + sbi->total_valid_block_count -= (block_t)count; + if (sbi->reserved_blocks && + sbi->current_reserved_blocks < sbi->reserved_blocks) + sbi->current_reserved_blocks = min(sbi->reserved_blocks, + sbi->current_reserved_blocks + count); + spin_unlock(&sbi->stat_lock); + if (unlikely(inode->i_blocks < sectors)) { + f2fs_warn(sbi, "Inconsistent i_blocks, ino:%lu, iblocks:%llu, sectors:%llu", + inode->i_ino, + (unsigned long long)inode->i_blocks, + (unsigned long long)sectors); + set_sbi_flag(sbi, SBI_NEED_FSCK); + return; + } + f2fs_i_blocks_write(inode, count, false, true); +} + +static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) +{ + atomic_inc(&sbi->nr_pages[count_type]); + + if (count_type == F2FS_DIRTY_DENTS || + count_type == F2FS_DIRTY_NODES || + count_type == F2FS_DIRTY_META || + count_type == F2FS_DIRTY_QDATA || + count_type == F2FS_DIRTY_IMETA) + set_sbi_flag(sbi, SBI_IS_DIRTY); +} + +static inline void inode_inc_dirty_pages(struct inode *inode) +{ + atomic_inc(&F2FS_I(inode)->dirty_pages); + inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ? + F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA); + if (IS_NOQUOTA(inode)) + inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA); +} + +static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) +{ + atomic_dec(&sbi->nr_pages[count_type]); +} + +static inline void inode_dec_dirty_pages(struct inode *inode) +{ + if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && + !S_ISLNK(inode->i_mode)) + return; + + atomic_dec(&F2FS_I(inode)->dirty_pages); + dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ? + F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA); + if (IS_NOQUOTA(inode)) + dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA); +} + +static inline void inc_atomic_write_cnt(struct inode *inode) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct f2fs_inode_info *fi = F2FS_I(inode); + u64 current_write; + + fi->atomic_write_cnt++; + atomic64_inc(&sbi->current_atomic_write); + current_write = atomic64_read(&sbi->current_atomic_write); + if (current_write > sbi->peak_atomic_write) + sbi->peak_atomic_write = current_write; +} + +static inline void release_atomic_write_cnt(struct inode *inode) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct f2fs_inode_info *fi = F2FS_I(inode); + + atomic64_sub(fi->atomic_write_cnt, &sbi->current_atomic_write); + fi->atomic_write_cnt = 0; +} + +static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type) +{ + return atomic_read(&sbi->nr_pages[count_type]); +} + +static inline int get_dirty_pages(struct inode *inode) +{ + return atomic_read(&F2FS_I(inode)->dirty_pages); +} + +static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) +{ + unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg; + unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >> + sbi->log_blocks_per_seg; + + return segs / sbi->segs_per_sec; +} + +static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) +{ + return sbi->total_valid_block_count; +} + +static inline block_t discard_blocks(struct f2fs_sb_info *sbi) +{ + return sbi->discard_blks; +} + +static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) +{ + struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); + + /* return NAT or SIT bitmap */ + if (flag == NAT_BITMAP) + return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); + else if (flag == SIT_BITMAP) + return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); + + return 0; +} + +static inline block_t __cp_payload(struct f2fs_sb_info *sbi) +{ + return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); +} + +static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) +{ + struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); + void *tmp_ptr = &ckpt->sit_nat_version_bitmap; + int offset; + + if (is_set_ckpt_flags(sbi, CP_LARGE_NAT_BITMAP_FLAG)) { + offset = (flag == SIT_BITMAP) ? + le32_to_cpu(ckpt->nat_ver_bitmap_bytesize) : 0; + /* + * if large_nat_bitmap feature is enabled, leave checksum + * protection for all nat/sit bitmaps. + */ + return tmp_ptr + offset + sizeof(__le32); + } + + if (__cp_payload(sbi) > 0) { + if (flag == NAT_BITMAP) + return tmp_ptr; + else + return (unsigned char *)ckpt + F2FS_BLKSIZE; + } else { + offset = (flag == NAT_BITMAP) ? + le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; + return tmp_ptr + offset; + } +} + +static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) +{ + block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); + + if (sbi->cur_cp_pack == 2) + start_addr += sbi->blocks_per_seg; + return start_addr; +} + +static inline block_t __start_cp_next_addr(struct f2fs_sb_info *sbi) +{ + block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); + + if (sbi->cur_cp_pack == 1) + start_addr += sbi->blocks_per_seg; + return start_addr; +} + +static inline void __set_cp_next_pack(struct f2fs_sb_info *sbi) +{ + sbi->cur_cp_pack = (sbi->cur_cp_pack == 1) ? 2 : 1; +} + +static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) +{ + return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); +} + +extern void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync); +static inline int inc_valid_node_count(struct f2fs_sb_info *sbi, + struct inode *inode, bool is_inode) +{ + block_t valid_block_count; + unsigned int valid_node_count, user_block_count; + int err; + + if (is_inode) { + if (inode) { + err = dquot_alloc_inode(inode); + if (err) + return err; + } + } else { + err = dquot_reserve_block(inode, 1); + if (err) + return err; + } + + if (time_to_inject(sbi, FAULT_BLOCK)) + goto enospc; + + spin_lock(&sbi->stat_lock); + + valid_block_count = sbi->total_valid_block_count + + sbi->current_reserved_blocks + 1; + + if (!__allow_reserved_blocks(sbi, inode, false)) + valid_block_count += F2FS_OPTION(sbi).root_reserved_blocks; + + if (F2FS_IO_ALIGNED(sbi)) + valid_block_count += sbi->blocks_per_seg * + SM_I(sbi)->additional_reserved_segments; + + user_block_count = sbi->user_block_count; + if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) + user_block_count -= sbi->unusable_block_count; + + if (unlikely(valid_block_count > user_block_count)) { + spin_unlock(&sbi->stat_lock); + goto enospc; + } + + valid_node_count = sbi->total_valid_node_count + 1; + if (unlikely(valid_node_count > sbi->total_node_count)) { + spin_unlock(&sbi->stat_lock); + goto enospc; + } + + sbi->total_valid_node_count++; + sbi->total_valid_block_count++; + spin_unlock(&sbi->stat_lock); + + if (inode) { + if (is_inode) + f2fs_mark_inode_dirty_sync(inode, true); + else + f2fs_i_blocks_write(inode, 1, true, true); + } + + percpu_counter_inc(&sbi->alloc_valid_block_count); + return 0; + +enospc: + if (is_inode) { + if (inode) + dquot_free_inode(inode); + } else { + dquot_release_reservation_block(inode, 1); + } + return -ENOSPC; +} + +static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, + struct inode *inode, bool is_inode) +{ + spin_lock(&sbi->stat_lock); + + if (unlikely(!sbi->total_valid_block_count || + !sbi->total_valid_node_count)) { + f2fs_warn(sbi, "dec_valid_node_count: inconsistent block counts, total_valid_block:%u, total_valid_node:%u", + sbi->total_valid_block_count, + sbi->total_valid_node_count); + set_sbi_flag(sbi, SBI_NEED_FSCK); + } else { + sbi->total_valid_block_count--; + sbi->total_valid_node_count--; + } + + if (sbi->reserved_blocks && + sbi->current_reserved_blocks < sbi->reserved_blocks) + sbi->current_reserved_blocks++; + + spin_unlock(&sbi->stat_lock); + + if (is_inode) { + dquot_free_inode(inode); + } else { + if (unlikely(inode->i_blocks == 0)) { + f2fs_warn(sbi, "dec_valid_node_count: inconsistent i_blocks, ino:%lu, iblocks:%llu", + inode->i_ino, + (unsigned long long)inode->i_blocks); + set_sbi_flag(sbi, SBI_NEED_FSCK); + return; + } + f2fs_i_blocks_write(inode, 1, false, true); + } +} + +static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) +{ + return sbi->total_valid_node_count; +} + +static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) +{ + percpu_counter_inc(&sbi->total_valid_inode_count); +} + +static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) +{ + percpu_counter_dec(&sbi->total_valid_inode_count); +} + +static inline s64 valid_inode_count(struct f2fs_sb_info *sbi) +{ + return percpu_counter_sum_positive(&sbi->total_valid_inode_count); +} + +static inline struct page *f2fs_grab_cache_page(struct address_space *mapping, + pgoff_t index, bool for_write) +{ + struct page *page; + unsigned int flags; + + if (IS_ENABLED(CONFIG_F2FS_FAULT_INJECTION)) { + if (!for_write) + page = find_get_page_flags(mapping, index, + FGP_LOCK | FGP_ACCESSED); + else + page = find_lock_page(mapping, index); + if (page) + return page; + + if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC)) + return NULL; + } + + if (!for_write) + return grab_cache_page(mapping, index); + + flags = memalloc_nofs_save(); + page = grab_cache_page_write_begin(mapping, index); + memalloc_nofs_restore(flags); + + return page; +} + +static inline struct page *f2fs_pagecache_get_page( + struct address_space *mapping, pgoff_t index, + fgf_t fgp_flags, gfp_t gfp_mask) +{ + if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_GET)) + return NULL; + + return pagecache_get_page(mapping, index, fgp_flags, gfp_mask); +} + +static inline void f2fs_put_page(struct page *page, int unlock) +{ + if (!page) + return; + + if (unlock) { + f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page)); + unlock_page(page); + } + put_page(page); +} + +static inline void f2fs_put_dnode(struct dnode_of_data *dn) +{ + if (dn->node_page) + f2fs_put_page(dn->node_page, 1); + if (dn->inode_page && dn->node_page != dn->inode_page) + f2fs_put_page(dn->inode_page, 0); + dn->node_page = NULL; + dn->inode_page = NULL; +} + +static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, + size_t size) +{ + return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL); +} + +static inline void *f2fs_kmem_cache_alloc_nofail(struct kmem_cache *cachep, + gfp_t flags) +{ + void *entry; + + entry = kmem_cache_alloc(cachep, flags); + if (!entry) + entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL); + return entry; +} + +static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, + gfp_t flags, bool nofail, struct f2fs_sb_info *sbi) +{ + if (nofail) + return f2fs_kmem_cache_alloc_nofail(cachep, flags); + + if (time_to_inject(sbi, FAULT_SLAB_ALLOC)) + return NULL; + + return kmem_cache_alloc(cachep, flags); +} + +static inline bool is_inflight_io(struct f2fs_sb_info *sbi, int type) +{ + if (get_pages(sbi, F2FS_RD_DATA) || get_pages(sbi, F2FS_RD_NODE) || + get_pages(sbi, F2FS_RD_META) || get_pages(sbi, F2FS_WB_DATA) || + get_pages(sbi, F2FS_WB_CP_DATA) || + get_pages(sbi, F2FS_DIO_READ) || + get_pages(sbi, F2FS_DIO_WRITE)) + return true; + + if (type != DISCARD_TIME && SM_I(sbi) && SM_I(sbi)->dcc_info && + atomic_read(&SM_I(sbi)->dcc_info->queued_discard)) + return true; + + if (SM_I(sbi) && SM_I(sbi)->fcc_info && + atomic_read(&SM_I(sbi)->fcc_info->queued_flush)) + return true; + return false; +} + +static inline bool is_idle(struct f2fs_sb_info *sbi, int type) +{ + if (sbi->gc_mode == GC_URGENT_HIGH) + return true; + + if (is_inflight_io(sbi, type)) + return false; + + if (sbi->gc_mode == GC_URGENT_MID) + return true; + + if (sbi->gc_mode == GC_URGENT_LOW && + (type == DISCARD_TIME || type == GC_TIME)) + return true; + + return f2fs_time_over(sbi, type); +} + +static inline void f2fs_radix_tree_insert(struct radix_tree_root *root, + unsigned long index, void *item) +{ + while (radix_tree_insert(root, index, item)) + cond_resched(); +} + +#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) + +static inline bool IS_INODE(struct page *page) +{ + struct f2fs_node *p = F2FS_NODE(page); + + return RAW_IS_INODE(p); +} + +static inline int offset_in_addr(struct f2fs_inode *i) +{ + return (i->i_inline & F2FS_EXTRA_ATTR) ? + (le16_to_cpu(i->i_extra_isize) / sizeof(__le32)) : 0; +} + +static inline __le32 *blkaddr_in_node(struct f2fs_node *node) +{ + return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; +} + +static inline int f2fs_has_extra_attr(struct inode *inode); +static inline block_t data_blkaddr(struct inode *inode, + struct page *node_page, unsigned int offset) +{ + struct f2fs_node *raw_node; + __le32 *addr_array; + int base = 0; + bool is_inode = IS_INODE(node_page); + + raw_node = F2FS_NODE(node_page); + + if (is_inode) { + if (!inode) + /* from GC path only */ + base = offset_in_addr(&raw_node->i); + else if (f2fs_has_extra_attr(inode)) + base = get_extra_isize(inode); + } + + addr_array = blkaddr_in_node(raw_node); + return le32_to_cpu(addr_array[base + offset]); +} + +static inline block_t f2fs_data_blkaddr(struct dnode_of_data *dn) +{ + return data_blkaddr(dn->inode, dn->node_page, dn->ofs_in_node); +} + +static inline int f2fs_test_bit(unsigned int nr, char *addr) +{ + int mask; + + addr += (nr >> 3); + mask = BIT(7 - (nr & 0x07)); + return mask & *addr; +} + +static inline void f2fs_set_bit(unsigned int nr, char *addr) +{ + int mask; + + addr += (nr >> 3); + mask = BIT(7 - (nr & 0x07)); + *addr |= mask; +} + +static inline void f2fs_clear_bit(unsigned int nr, char *addr) +{ + int mask; + + addr += (nr >> 3); + mask = BIT(7 - (nr & 0x07)); + *addr &= ~mask; +} + +static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr) +{ + int mask; + int ret; + + addr += (nr >> 3); + mask = BIT(7 - (nr & 0x07)); + ret = mask & *addr; + *addr |= mask; + return ret; +} + +static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr) +{ + int mask; + int ret; + + addr += (nr >> 3); + mask = BIT(7 - (nr & 0x07)); + ret = mask & *addr; + *addr &= ~mask; + return ret; +} + +static inline void f2fs_change_bit(unsigned int nr, char *addr) +{ + int mask; + + addr += (nr >> 3); + mask = BIT(7 - (nr & 0x07)); + *addr ^= mask; +} + +/* + * On-disk inode flags (f2fs_inode::i_flags) + */ +#define F2FS_COMPR_FL 0x00000004 /* Compress file */ +#define F2FS_SYNC_FL 0x00000008 /* Synchronous updates */ +#define F2FS_IMMUTABLE_FL 0x00000010 /* Immutable file */ +#define F2FS_APPEND_FL 0x00000020 /* writes to file may only append */ +#define F2FS_NODUMP_FL 0x00000040 /* do not dump file */ +#define F2FS_NOATIME_FL 0x00000080 /* do not update atime */ +#define F2FS_NOCOMP_FL 0x00000400 /* Don't compress */ +#define F2FS_INDEX_FL 0x00001000 /* hash-indexed directory */ +#define F2FS_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */ +#define F2FS_PROJINHERIT_FL 0x20000000 /* Create with parents projid */ +#define F2FS_CASEFOLD_FL 0x40000000 /* Casefolded file */ + +#define F2FS_QUOTA_DEFAULT_FL (F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL) + +/* Flags that should be inherited by new inodes from their parent. */ +#define F2FS_FL_INHERITED (F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL | \ + F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \ + F2FS_CASEFOLD_FL) + +/* Flags that are appropriate for regular files (all but dir-specific ones). */ +#define F2FS_REG_FLMASK (~(F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \ + F2FS_CASEFOLD_FL)) + +/* Flags that are appropriate for non-directories/regular files. */ +#define F2FS_OTHER_FLMASK (F2FS_NODUMP_FL | F2FS_NOATIME_FL) + +static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) +{ + if (S_ISDIR(mode)) + return flags; + else if (S_ISREG(mode)) + return flags & F2FS_REG_FLMASK; + else + return flags & F2FS_OTHER_FLMASK; +} + +static inline void __mark_inode_dirty_flag(struct inode *inode, + int flag, bool set) +{ + switch (flag) { + case FI_INLINE_XATTR: + case FI_INLINE_DATA: + case FI_INLINE_DENTRY: + case FI_NEW_INODE: + if (set) + return; + fallthrough; + case FI_DATA_EXIST: + case FI_INLINE_DOTS: + case FI_PIN_FILE: + case FI_COMPRESS_RELEASED: + f2fs_mark_inode_dirty_sync(inode, true); + } +} + +static inline void set_inode_flag(struct inode *inode, int flag) +{ + set_bit(flag, F2FS_I(inode)->flags); + __mark_inode_dirty_flag(inode, flag, true); +} + +static inline int is_inode_flag_set(struct inode *inode, int flag) +{ + return test_bit(flag, F2FS_I(inode)->flags); +} + +static inline void clear_inode_flag(struct inode *inode, int flag) +{ + clear_bit(flag, F2FS_I(inode)->flags); + __mark_inode_dirty_flag(inode, flag, false); +} + +static inline bool f2fs_verity_in_progress(struct inode *inode) +{ + return IS_ENABLED(CONFIG_FS_VERITY) && + is_inode_flag_set(inode, FI_VERITY_IN_PROGRESS); +} + +static inline void set_acl_inode(struct inode *inode, umode_t mode) +{ + F2FS_I(inode)->i_acl_mode = mode; + set_inode_flag(inode, FI_ACL_MODE); + f2fs_mark_inode_dirty_sync(inode, false); +} + +static inline void f2fs_i_links_write(struct inode *inode, bool inc) +{ + if (inc) + inc_nlink(inode); + else + drop_nlink(inode); + f2fs_mark_inode_dirty_sync(inode, true); +} + +static inline void f2fs_i_blocks_write(struct inode *inode, + block_t diff, bool add, bool claim) +{ + bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE); + bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER); + + /* add = 1, claim = 1 should be dquot_reserve_block in pair */ + if (add) { + if (claim) + dquot_claim_block(inode, diff); + else + dquot_alloc_block_nofail(inode, diff); + } else { + dquot_free_block(inode, diff); + } + + f2fs_mark_inode_dirty_sync(inode, true); + if (clean || recover) + set_inode_flag(inode, FI_AUTO_RECOVER); +} + +static inline bool f2fs_is_atomic_file(struct inode *inode); + +static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size) +{ + bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE); + bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER); + + if (i_size_read(inode) == i_size) + return; + + i_size_write(inode, i_size); + + if (f2fs_is_atomic_file(inode)) + return; + + f2fs_mark_inode_dirty_sync(inode, true); + if (clean || recover) + set_inode_flag(inode, FI_AUTO_RECOVER); +} + +static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth) +{ + F2FS_I(inode)->i_current_depth = depth; + f2fs_mark_inode_dirty_sync(inode, true); +} + +static inline void f2fs_i_gc_failures_write(struct inode *inode, + unsigned int count) +{ + F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN] = count; + f2fs_mark_inode_dirty_sync(inode, true); +} + +static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid) +{ + F2FS_I(inode)->i_xattr_nid = xnid; + f2fs_mark_inode_dirty_sync(inode, true); +} + +static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino) +{ + F2FS_I(inode)->i_pino = pino; + f2fs_mark_inode_dirty_sync(inode, true); +} + +static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri) +{ + struct f2fs_inode_info *fi = F2FS_I(inode); + + if (ri->i_inline & F2FS_INLINE_XATTR) + set_bit(FI_INLINE_XATTR, fi->flags); + if (ri->i_inline & F2FS_INLINE_DATA) + set_bit(FI_INLINE_DATA, fi->flags); + if (ri->i_inline & F2FS_INLINE_DENTRY) + set_bit(FI_INLINE_DENTRY, fi->flags); + if (ri->i_inline & F2FS_DATA_EXIST) + set_bit(FI_DATA_EXIST, fi->flags); + if (ri->i_inline & F2FS_INLINE_DOTS) + set_bit(FI_INLINE_DOTS, fi->flags); + if (ri->i_inline & F2FS_EXTRA_ATTR) + set_bit(FI_EXTRA_ATTR, fi->flags); + if (ri->i_inline & F2FS_PIN_FILE) + set_bit(FI_PIN_FILE, fi->flags); + if (ri->i_inline & F2FS_COMPRESS_RELEASED) + set_bit(FI_COMPRESS_RELEASED, fi->flags); +} + +static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri) +{ + ri->i_inline = 0; + + if (is_inode_flag_set(inode, FI_INLINE_XATTR)) + ri->i_inline |= F2FS_INLINE_XATTR; + if (is_inode_flag_set(inode, FI_INLINE_DATA)) + ri->i_inline |= F2FS_INLINE_DATA; + if (is_inode_flag_set(inode, FI_INLINE_DENTRY)) + ri->i_inline |= F2FS_INLINE_DENTRY; + if (is_inode_flag_set(inode, FI_DATA_EXIST)) + ri->i_inline |= F2FS_DATA_EXIST; + if (is_inode_flag_set(inode, FI_INLINE_DOTS)) + ri->i_inline |= F2FS_INLINE_DOTS; + if (is_inode_flag_set(inode, FI_EXTRA_ATTR)) + ri->i_inline |= F2FS_EXTRA_ATTR; + if (is_inode_flag_set(inode, FI_PIN_FILE)) + ri->i_inline |= F2FS_PIN_FILE; + if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) + ri->i_inline |= F2FS_COMPRESS_RELEASED; +} + +static inline int f2fs_has_extra_attr(struct inode *inode) +{ + return is_inode_flag_set(inode, FI_EXTRA_ATTR); +} + +static inline int f2fs_has_inline_xattr(struct inode *inode) +{ + return is_inode_flag_set(inode, FI_INLINE_XATTR); +} + +static inline int f2fs_compressed_file(struct inode *inode) +{ + return S_ISREG(inode->i_mode) && + is_inode_flag_set(inode, FI_COMPRESSED_FILE); +} + +static inline bool f2fs_need_compress_data(struct inode *inode) +{ + int compress_mode = F2FS_OPTION(F2FS_I_SB(inode)).compress_mode; + + if (!f2fs_compressed_file(inode)) + return false; + + if (compress_mode == COMPR_MODE_FS) + return true; + else if (compress_mode == COMPR_MODE_USER && + is_inode_flag_set(inode, FI_ENABLE_COMPRESS)) + return true; + + return false; +} + +static inline unsigned int addrs_per_inode(struct inode *inode) +{ + unsigned int addrs = CUR_ADDRS_PER_INODE(inode) - + get_inline_xattr_addrs(inode); + + if (!f2fs_compressed_file(inode)) + return addrs; + return ALIGN_DOWN(addrs, F2FS_I(inode)->i_cluster_size); +} + +static inline unsigned int addrs_per_block(struct inode *inode) +{ + if (!f2fs_compressed_file(inode)) + return DEF_ADDRS_PER_BLOCK; + return ALIGN_DOWN(DEF_ADDRS_PER_BLOCK, F2FS_I(inode)->i_cluster_size); +} + +static inline void *inline_xattr_addr(struct inode *inode, struct page *page) +{ + struct f2fs_inode *ri = F2FS_INODE(page); + + return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - + get_inline_xattr_addrs(inode)]); +} + +static inline int inline_xattr_size(struct inode *inode) +{ + if (f2fs_has_inline_xattr(inode)) + return get_inline_xattr_addrs(inode) * sizeof(__le32); + return 0; +} + +/* + * Notice: check inline_data flag without inode page lock is unsafe. + * It could change at any time by f2fs_convert_inline_page(). + */ +static inline int f2fs_has_inline_data(struct inode *inode) +{ + return is_inode_flag_set(inode, FI_INLINE_DATA); +} + +static inline int f2fs_exist_data(struct inode *inode) +{ + return is_inode_flag_set(inode, FI_DATA_EXIST); +} + +static inline int f2fs_has_inline_dots(struct inode *inode) +{ + return is_inode_flag_set(inode, FI_INLINE_DOTS); +} + +static inline int f2fs_is_mmap_file(struct inode *inode) +{ + return is_inode_flag_set(inode, FI_MMAP_FILE); +} + +static inline bool f2fs_is_pinned_file(struct inode *inode) +{ + return is_inode_flag_set(inode, FI_PIN_FILE); +} + +static inline bool f2fs_is_atomic_file(struct inode *inode) +{ + return is_inode_flag_set(inode, FI_ATOMIC_FILE); +} + +static inline bool f2fs_is_cow_file(struct inode *inode) +{ + return is_inode_flag_set(inode, FI_COW_FILE); +} + +static inline bool f2fs_is_first_block_written(struct inode *inode) +{ + return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN); +} + +static inline bool f2fs_is_drop_cache(struct inode *inode) +{ + return is_inode_flag_set(inode, FI_DROP_CACHE); +} + +static inline void *inline_data_addr(struct inode *inode, struct page *page) +{ + struct f2fs_inode *ri = F2FS_INODE(page); + int extra_size = get_extra_isize(inode); + + return (void *)&(ri->i_addr[extra_size + DEF_INLINE_RESERVED_SIZE]); +} + +static inline int f2fs_has_inline_dentry(struct inode *inode) +{ + return is_inode_flag_set(inode, FI_INLINE_DENTRY); +} + +static inline int is_file(struct inode *inode, int type) +{ + return F2FS_I(inode)->i_advise & type; +} + +static inline void set_file(struct inode *inode, int type) +{ + if (is_file(inode, type)) + return; + F2FS_I(inode)->i_advise |= type; + f2fs_mark_inode_dirty_sync(inode, true); +} + +static inline void clear_file(struct inode *inode, int type) +{ + if (!is_file(inode, type)) + return; + F2FS_I(inode)->i_advise &= ~type; + f2fs_mark_inode_dirty_sync(inode, true); +} + +static inline bool f2fs_is_time_consistent(struct inode *inode) +{ + struct timespec64 ctime = inode_get_ctime(inode); + + if (!timespec64_equal(F2FS_I(inode)->i_disk_time, &inode->i_atime)) + return false; + if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 1, &ctime)) + return false; + if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 2, &inode->i_mtime)) + return false; + return true; +} + +static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync) +{ + bool ret; + + if (dsync) { + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + + spin_lock(&sbi->inode_lock[DIRTY_META]); + ret = list_empty(&F2FS_I(inode)->gdirty_list); + spin_unlock(&sbi->inode_lock[DIRTY_META]); + return ret; + } + if (!is_inode_flag_set(inode, FI_AUTO_RECOVER) || + file_keep_isize(inode) || + i_size_read(inode) & ~PAGE_MASK) + return false; + + if (!f2fs_is_time_consistent(inode)) + return false; + + spin_lock(&F2FS_I(inode)->i_size_lock); + ret = F2FS_I(inode)->last_disk_size == i_size_read(inode); + spin_unlock(&F2FS_I(inode)->i_size_lock); + + return ret; +} + +static inline bool f2fs_readonly(struct super_block *sb) +{ + return sb_rdonly(sb); +} + +static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi) +{ + return is_set_ckpt_flags(sbi, CP_ERROR_FLAG); +} + +static inline bool is_dot_dotdot(const u8 *name, size_t len) +{ + if (len == 1 && name[0] == '.') + return true; + + if (len == 2 && name[0] == '.' && name[1] == '.') + return true; + + return false; +} + +static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi, + size_t size, gfp_t flags) +{ + if (time_to_inject(sbi, FAULT_KMALLOC)) + return NULL; + + return kmalloc(size, flags); +} + +static inline void *f2fs_getname(struct f2fs_sb_info *sbi) +{ + if (time_to_inject(sbi, FAULT_KMALLOC)) + return NULL; + + return __getname(); +} + +static inline void f2fs_putname(char *buf) +{ + __putname(buf); +} + +static inline void *f2fs_kzalloc(struct f2fs_sb_info *sbi, + size_t size, gfp_t flags) +{ + return f2fs_kmalloc(sbi, size, flags | __GFP_ZERO); +} + +static inline void *f2fs_kvmalloc(struct f2fs_sb_info *sbi, + size_t size, gfp_t flags) +{ + if (time_to_inject(sbi, FAULT_KVMALLOC)) + return NULL; + + return kvmalloc(size, flags); +} + +static inline void *f2fs_kvzalloc(struct f2fs_sb_info *sbi, + size_t size, gfp_t flags) +{ + return f2fs_kvmalloc(sbi, size, flags | __GFP_ZERO); +} + +static inline int get_extra_isize(struct inode *inode) +{ + return F2FS_I(inode)->i_extra_isize / sizeof(__le32); +} + +static inline int get_inline_xattr_addrs(struct inode *inode) +{ + return F2FS_I(inode)->i_inline_xattr_size; +} + +#define f2fs_get_inode_mode(i) \ + ((is_inode_flag_set(i, FI_ACL_MODE)) ? \ + (F2FS_I(i)->i_acl_mode) : ((i)->i_mode)) + +#define F2FS_MIN_EXTRA_ATTR_SIZE (sizeof(__le32)) + +#define F2FS_TOTAL_EXTRA_ATTR_SIZE \ + (offsetof(struct f2fs_inode, i_extra_end) - \ + offsetof(struct f2fs_inode, i_extra_isize)) \ + +#define F2FS_OLD_ATTRIBUTE_SIZE (offsetof(struct f2fs_inode, i_addr)) +#define F2FS_FITS_IN_INODE(f2fs_inode, extra_isize, field) \ + ((offsetof(typeof(*(f2fs_inode)), field) + \ + sizeof((f2fs_inode)->field)) \ + <= (F2FS_OLD_ATTRIBUTE_SIZE + (extra_isize))) \ + +#define __is_large_section(sbi) ((sbi)->segs_per_sec > 1) + +#define __is_meta_io(fio) (PAGE_TYPE_OF_BIO((fio)->type) == META) + +bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi, + block_t blkaddr, int type); +static inline void verify_blkaddr(struct f2fs_sb_info *sbi, + block_t blkaddr, int type) +{ + if (!f2fs_is_valid_blkaddr(sbi, blkaddr, type)) { + f2fs_err(sbi, "invalid blkaddr: %u, type: %d, run fsck to fix.", + blkaddr, type); + f2fs_bug_on(sbi, 1); + } +} + +static inline bool __is_valid_data_blkaddr(block_t blkaddr) +{ + if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR || + blkaddr == COMPRESS_ADDR) + return false; + return true; +} + +/* + * file.c + */ +int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); +int f2fs_do_truncate_blocks(struct inode *inode, u64 from, bool lock); +int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock); +int f2fs_truncate(struct inode *inode); +int f2fs_getattr(struct mnt_idmap *idmap, const struct path *path, + struct kstat *stat, u32 request_mask, unsigned int flags); +int f2fs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, + struct iattr *attr); +int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end); +void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count); +int f2fs_precache_extents(struct inode *inode); +int f2fs_fileattr_get(struct dentry *dentry, struct fileattr *fa); +int f2fs_fileattr_set(struct mnt_idmap *idmap, + struct dentry *dentry, struct fileattr *fa); +long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); +long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); +int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid); +int f2fs_pin_file_control(struct inode *inode, bool inc); + +/* + * inode.c + */ +void f2fs_set_inode_flags(struct inode *inode); +bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page); +void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page); +struct inode *f2fs_iget(struct super_block *sb, unsigned long ino); +struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino); +int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink); +void f2fs_update_inode(struct inode *inode, struct page *node_page); +void f2fs_update_inode_page(struct inode *inode); +int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc); +void f2fs_evict_inode(struct inode *inode); +void f2fs_handle_failed_inode(struct inode *inode); + +/* + * namei.c + */ +int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name, + bool hot, bool set); +struct dentry *f2fs_get_parent(struct dentry *child); +int f2fs_get_tmpfile(struct mnt_idmap *idmap, struct inode *dir, + struct inode **new_inode); + +/* + * dir.c + */ +int f2fs_init_casefolded_name(const struct inode *dir, + struct f2fs_filename *fname); +int f2fs_setup_filename(struct inode *dir, const struct qstr *iname, + int lookup, struct f2fs_filename *fname); +int f2fs_prepare_lookup(struct inode *dir, struct dentry *dentry, + struct f2fs_filename *fname); +void f2fs_free_filename(struct f2fs_filename *fname); +struct f2fs_dir_entry *f2fs_find_target_dentry(const struct f2fs_dentry_ptr *d, + const struct f2fs_filename *fname, int *max_slots); +int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d, + unsigned int start_pos, struct fscrypt_str *fstr); +void f2fs_do_make_empty_dir(struct inode *inode, struct inode *parent, + struct f2fs_dentry_ptr *d); +struct page *f2fs_init_inode_metadata(struct inode *inode, struct inode *dir, + const struct f2fs_filename *fname, struct page *dpage); +void f2fs_update_parent_metadata(struct inode *dir, struct inode *inode, + unsigned int current_depth); +int f2fs_room_for_filename(const void *bitmap, int slots, int max_slots); +void f2fs_drop_nlink(struct inode *dir, struct inode *inode); +struct f2fs_dir_entry *__f2fs_find_entry(struct inode *dir, + const struct f2fs_filename *fname, + struct page **res_page); +struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir, + const struct qstr *child, struct page **res_page); +struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p); +ino_t f2fs_inode_by_name(struct inode *dir, const struct qstr *qstr, + struct page **page); +void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de, + struct page *page, struct inode *inode); +bool f2fs_has_enough_room(struct inode *dir, struct page *ipage, + const struct f2fs_filename *fname); +void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *d, + const struct fscrypt_str *name, f2fs_hash_t name_hash, + unsigned int bit_pos); +int f2fs_add_regular_entry(struct inode *dir, const struct f2fs_filename *fname, + struct inode *inode, nid_t ino, umode_t mode); +int f2fs_add_dentry(struct inode *dir, const struct f2fs_filename *fname, + struct inode *inode, nid_t ino, umode_t mode); +int f2fs_do_add_link(struct inode *dir, const struct qstr *name, + struct inode *inode, nid_t ino, umode_t mode); +void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page, + struct inode *dir, struct inode *inode); +int f2fs_do_tmpfile(struct inode *inode, struct inode *dir); +bool f2fs_empty_dir(struct inode *dir); + +static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) +{ + if (fscrypt_is_nokey_name(dentry)) + return -ENOKEY; + return f2fs_do_add_link(d_inode(dentry->d_parent), &dentry->d_name, + inode, inode->i_ino, inode->i_mode); +} + +/* + * super.c + */ +int f2fs_inode_dirtied(struct inode *inode, bool sync); +void f2fs_inode_synced(struct inode *inode); +int f2fs_dquot_initialize(struct inode *inode); +int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly); +int f2fs_quota_sync(struct super_block *sb, int type); +loff_t max_file_blocks(struct inode *inode); +void f2fs_quota_off_umount(struct super_block *sb); +void f2fs_save_errors(struct f2fs_sb_info *sbi, unsigned char flag); +void f2fs_handle_critical_error(struct f2fs_sb_info *sbi, unsigned char reason, + bool irq_context); +void f2fs_handle_error(struct f2fs_sb_info *sbi, unsigned char error); +void f2fs_handle_error_async(struct f2fs_sb_info *sbi, unsigned char error); +int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover); +int f2fs_sync_fs(struct super_block *sb, int sync); +int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi); + +/* + * hash.c + */ +void f2fs_hash_filename(const struct inode *dir, struct f2fs_filename *fname); + +/* + * node.c + */ +struct node_info; + +int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid); +bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type); +bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page); +void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi); +void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page); +void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi); +int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid); +bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid); +bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino); +int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid, + struct node_info *ni, bool checkpoint_context); +pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs); +int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode); +int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from); +int f2fs_truncate_xattr_node(struct inode *inode); +int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, + unsigned int seq_id); +bool f2fs_nat_bitmap_enabled(struct f2fs_sb_info *sbi); +int f2fs_remove_inode_page(struct inode *inode); +struct page *f2fs_new_inode_page(struct inode *inode); +struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs); +void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid); +struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid); +struct page *f2fs_get_node_page_ra(struct page *parent, int start); +int f2fs_move_node_page(struct page *node_page, int gc_type); +void f2fs_flush_inline_data(struct f2fs_sb_info *sbi); +int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, + struct writeback_control *wbc, bool atomic, + unsigned int *seq_id); +int f2fs_sync_node_pages(struct f2fs_sb_info *sbi, + struct writeback_control *wbc, + bool do_balance, enum iostat_type io_type); +int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount); +bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid); +void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid); +void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid); +int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink); +int f2fs_recover_inline_xattr(struct inode *inode, struct page *page); +int f2fs_recover_xattr_data(struct inode *inode, struct page *page); +int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page); +int f2fs_restore_node_summary(struct f2fs_sb_info *sbi, + unsigned int segno, struct f2fs_summary_block *sum); +void f2fs_enable_nat_bits(struct f2fs_sb_info *sbi); +int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc); +int f2fs_build_node_manager(struct f2fs_sb_info *sbi); +void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi); +int __init f2fs_create_node_manager_caches(void); +void f2fs_destroy_node_manager_caches(void); + +/* + * segment.c + */ +bool f2fs_need_SSR(struct f2fs_sb_info *sbi); +int f2fs_commit_atomic_write(struct inode *inode); +void f2fs_abort_atomic_write(struct inode *inode, bool clean); +void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need); +void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi, bool from_bg); +int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino); +int f2fs_create_flush_cmd_control(struct f2fs_sb_info *sbi); +int f2fs_flush_device_cache(struct f2fs_sb_info *sbi); +void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free); +void f2fs_invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr); +bool f2fs_is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr); +int f2fs_start_discard_thread(struct f2fs_sb_info *sbi); +void f2fs_drop_discard_cmd(struct f2fs_sb_info *sbi); +void f2fs_stop_discard_thread(struct f2fs_sb_info *sbi); +bool f2fs_issue_discard_timeout(struct f2fs_sb_info *sbi); +void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi, + struct cp_control *cpc); +void f2fs_dirty_to_prefree(struct f2fs_sb_info *sbi); +block_t f2fs_get_unusable_blocks(struct f2fs_sb_info *sbi); +int f2fs_disable_cp_again(struct f2fs_sb_info *sbi, block_t unusable); +void f2fs_release_discard_addrs(struct f2fs_sb_info *sbi); +int f2fs_npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra); +bool f2fs_segment_has_free_slot(struct f2fs_sb_info *sbi, int segno); +void f2fs_init_inmem_curseg(struct f2fs_sb_info *sbi); +void f2fs_save_inmem_curseg(struct f2fs_sb_info *sbi); +void f2fs_restore_inmem_curseg(struct f2fs_sb_info *sbi); +void f2fs_get_new_segment(struct f2fs_sb_info *sbi, + unsigned int *newseg, bool new_sec, int dir); +void f2fs_allocate_segment_for_resize(struct f2fs_sb_info *sbi, int type, + unsigned int start, unsigned int end); +void f2fs_allocate_new_section(struct f2fs_sb_info *sbi, int type, bool force); +void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi); +int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range); +bool f2fs_exist_trim_candidates(struct f2fs_sb_info *sbi, + struct cp_control *cpc); +struct page *f2fs_get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno); +void f2fs_update_meta_page(struct f2fs_sb_info *sbi, void *src, + block_t blk_addr); +void f2fs_do_write_meta_page(struct f2fs_sb_info *sbi, struct page *page, + enum iostat_type io_type); +void f2fs_do_write_node_page(unsigned int nid, struct f2fs_io_info *fio); +void f2fs_outplace_write_data(struct dnode_of_data *dn, + struct f2fs_io_info *fio); +int f2fs_inplace_write_data(struct f2fs_io_info *fio); +void f2fs_do_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, + block_t old_blkaddr, block_t new_blkaddr, + bool recover_curseg, bool recover_newaddr, + bool from_gc); +void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn, + block_t old_addr, block_t new_addr, + unsigned char version, bool recover_curseg, + bool recover_newaddr); +void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page, + block_t old_blkaddr, block_t *new_blkaddr, + struct f2fs_summary *sum, int type, + struct f2fs_io_info *fio); +void f2fs_update_device_state(struct f2fs_sb_info *sbi, nid_t ino, + block_t blkaddr, unsigned int blkcnt); +void f2fs_wait_on_page_writeback(struct page *page, + enum page_type type, bool ordered, bool locked); +void f2fs_wait_on_block_writeback(struct inode *inode, block_t blkaddr); +void f2fs_wait_on_block_writeback_range(struct inode *inode, block_t blkaddr, + block_t len); +void f2fs_write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk); +void f2fs_write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk); +int f2fs_lookup_journal_in_cursum(struct f2fs_journal *journal, int type, + unsigned int val, int alloc); +void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc); +int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi); +int f2fs_check_write_pointer(struct f2fs_sb_info *sbi); +int f2fs_build_segment_manager(struct f2fs_sb_info *sbi); +void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi); +int __init f2fs_create_segment_manager_caches(void); +void f2fs_destroy_segment_manager_caches(void); +int f2fs_rw_hint_to_seg_type(enum rw_hint hint); +unsigned int f2fs_usable_segs_in_sec(struct f2fs_sb_info *sbi, + unsigned int segno); +unsigned int f2fs_usable_blks_in_seg(struct f2fs_sb_info *sbi, + unsigned int segno); + +#define DEF_FRAGMENT_SIZE 4 +#define MIN_FRAGMENT_SIZE 1 +#define MAX_FRAGMENT_SIZE 512 + +static inline bool f2fs_need_rand_seg(struct f2fs_sb_info *sbi) +{ + return F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_SEG || + F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK; +} + +/* + * checkpoint.c + */ +void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io, + unsigned char reason); +void f2fs_flush_ckpt_thread(struct f2fs_sb_info *sbi); +struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index); +struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index); +struct page *f2fs_get_meta_page_retry(struct f2fs_sb_info *sbi, pgoff_t index); +struct page *f2fs_get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index); +bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi, + block_t blkaddr, int type); +int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, + int type, bool sync); +void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index, + unsigned int ra_blocks); +long f2fs_sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, + long nr_to_write, enum iostat_type io_type); +void f2fs_add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type); +void f2fs_remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type); +void f2fs_release_ino_entry(struct f2fs_sb_info *sbi, bool all); +bool f2fs_exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode); +void f2fs_set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino, + unsigned int devidx, int type); +bool f2fs_is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino, + unsigned int devidx, int type); +int f2fs_acquire_orphan_inode(struct f2fs_sb_info *sbi); +void f2fs_release_orphan_inode(struct f2fs_sb_info *sbi); +void f2fs_add_orphan_inode(struct inode *inode); +void f2fs_remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino); +int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi); +int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi); +void f2fs_update_dirty_folio(struct inode *inode, struct folio *folio); +void f2fs_remove_dirty_inode(struct inode *inode); +int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type, + bool from_cp); +void f2fs_wait_on_all_pages(struct f2fs_sb_info *sbi, int type); +u64 f2fs_get_sectors_written(struct f2fs_sb_info *sbi); +int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc); +void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi); +int __init f2fs_create_checkpoint_caches(void); +void f2fs_destroy_checkpoint_caches(void); +int f2fs_issue_checkpoint(struct f2fs_sb_info *sbi); +int f2fs_start_ckpt_thread(struct f2fs_sb_info *sbi); +void f2fs_stop_ckpt_thread(struct f2fs_sb_info *sbi); +void f2fs_init_ckpt_req_control(struct f2fs_sb_info *sbi); + +/* + * data.c + */ +int __init f2fs_init_bioset(void); +void f2fs_destroy_bioset(void); +int f2fs_init_bio_entry_cache(void); +void f2fs_destroy_bio_entry_cache(void); +void f2fs_submit_read_bio(struct f2fs_sb_info *sbi, struct bio *bio, + enum page_type type); +int f2fs_init_write_merge_io(struct f2fs_sb_info *sbi); +void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type); +void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi, + struct inode *inode, struct page *page, + nid_t ino, enum page_type type); +void f2fs_submit_merged_ipu_write(struct f2fs_sb_info *sbi, + struct bio **bio, struct page *page); +void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi); +int f2fs_submit_page_bio(struct f2fs_io_info *fio); +int f2fs_merge_page_bio(struct f2fs_io_info *fio); +void f2fs_submit_page_write(struct f2fs_io_info *fio); +struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi, + block_t blk_addr, sector_t *sector); +int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr); +void f2fs_set_data_blkaddr(struct dnode_of_data *dn); +void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr); +int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count); +int f2fs_reserve_new_block(struct dnode_of_data *dn); +int f2fs_get_block_locked(struct dnode_of_data *dn, pgoff_t index); +int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index); +struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index, + blk_opf_t op_flags, bool for_write, pgoff_t *next_pgofs); +struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index, + pgoff_t *next_pgofs); +struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index, + bool for_write); +struct page *f2fs_get_new_data_page(struct inode *inode, + struct page *ipage, pgoff_t index, bool new_i_size); +int f2fs_do_write_data_page(struct f2fs_io_info *fio); +int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, int flag); +int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, + u64 start, u64 len); +int f2fs_encrypt_one_page(struct f2fs_io_info *fio); +bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio); +bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio); +int f2fs_write_single_data_page(struct page *page, int *submitted, + struct bio **bio, sector_t *last_block, + struct writeback_control *wbc, + enum iostat_type io_type, + int compr_blocks, bool allow_balance); +void f2fs_write_failed(struct inode *inode, loff_t to); +void f2fs_invalidate_folio(struct folio *folio, size_t offset, size_t length); +bool f2fs_release_folio(struct folio *folio, gfp_t wait); +bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len); +void f2fs_clear_page_cache_dirty_tag(struct page *page); +int f2fs_init_post_read_processing(void); +void f2fs_destroy_post_read_processing(void); +int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi); +void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi); +extern const struct iomap_ops f2fs_iomap_ops; + +/* + * gc.c + */ +int f2fs_start_gc_thread(struct f2fs_sb_info *sbi); +void f2fs_stop_gc_thread(struct f2fs_sb_info *sbi); +block_t f2fs_start_bidx_of_node(unsigned int node_ofs, struct inode *inode); +int f2fs_gc(struct f2fs_sb_info *sbi, struct f2fs_gc_control *gc_control); +void f2fs_build_gc_manager(struct f2fs_sb_info *sbi); +int f2fs_resize_fs(struct file *filp, __u64 block_count); +int __init f2fs_create_garbage_collection_cache(void); +void f2fs_destroy_garbage_collection_cache(void); +/* victim selection function for cleaning and SSR */ +int f2fs_get_victim(struct f2fs_sb_info *sbi, unsigned int *result, + int gc_type, int type, char alloc_mode, + unsigned long long age); + +/* + * recovery.c + */ +int f2fs_recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only); +bool f2fs_space_for_roll_forward(struct f2fs_sb_info *sbi); +int __init f2fs_create_recovery_cache(void); +void f2fs_destroy_recovery_cache(void); + +/* + * debug.c + */ +#ifdef CONFIG_F2FS_STAT_FS +struct f2fs_stat_info { + struct list_head stat_list; + struct f2fs_sb_info *sbi; + int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; + int main_area_segs, main_area_sections, main_area_zones; + unsigned long long hit_cached[NR_EXTENT_CACHES]; + unsigned long long hit_rbtree[NR_EXTENT_CACHES]; + unsigned long long total_ext[NR_EXTENT_CACHES]; + unsigned long long hit_total[NR_EXTENT_CACHES]; + int ext_tree[NR_EXTENT_CACHES]; + int zombie_tree[NR_EXTENT_CACHES]; + int ext_node[NR_EXTENT_CACHES]; + /* to count memory footprint */ + unsigned long long ext_mem[NR_EXTENT_CACHES]; + /* for read extent cache */ + unsigned long long hit_largest; + /* for block age extent cache */ + unsigned long long allocated_data_blocks; + int ndirty_node, ndirty_dent, ndirty_meta, ndirty_imeta; + int ndirty_data, ndirty_qdata; + unsigned int ndirty_dirs, ndirty_files, nquota_files, ndirty_all; + int nats, dirty_nats, sits, dirty_sits; + int free_nids, avail_nids, alloc_nids; + int total_count, utilization; + int nr_wb_cp_data, nr_wb_data; + int nr_rd_data, nr_rd_node, nr_rd_meta; + int nr_dio_read, nr_dio_write; + unsigned int io_skip_bggc, other_skip_bggc; + int nr_flushing, nr_flushed, flush_list_empty; + int nr_discarding, nr_discarded; + int nr_discard_cmd; + unsigned int undiscard_blks; + int nr_issued_ckpt, nr_total_ckpt, nr_queued_ckpt; + unsigned int cur_ckpt_time, peak_ckpt_time; + int inline_xattr, inline_inode, inline_dir, append, update, orphans; + int compr_inode, swapfile_inode; + unsigned long long compr_blocks; + int aw_cnt, max_aw_cnt; + unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks; + unsigned int bimodal, avg_vblocks; + int util_free, util_valid, util_invalid; + int rsvd_segs, overp_segs; + int dirty_count, node_pages, meta_pages, compress_pages; + int compress_page_hit; + int prefree_count, free_segs, free_secs; + int cp_call_count[MAX_CALL_TYPE], cp_count; + int gc_call_count[MAX_CALL_TYPE]; + int gc_segs[2][2]; + int gc_secs[2][2]; + int tot_blks, data_blks, node_blks; + int bg_data_blks, bg_node_blks; + int curseg[NR_CURSEG_TYPE]; + int cursec[NR_CURSEG_TYPE]; + int curzone[NR_CURSEG_TYPE]; + unsigned int dirty_seg[NR_CURSEG_TYPE]; + unsigned int full_seg[NR_CURSEG_TYPE]; + unsigned int valid_blks[NR_CURSEG_TYPE]; + + unsigned int meta_count[META_MAX]; + unsigned int segment_count[2]; + unsigned int block_count[2]; + unsigned int inplace_count; + unsigned long long base_mem, cache_mem, page_mem; +}; + +static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) +{ + return (struct f2fs_stat_info *)sbi->stat_info; +} + +#define stat_inc_cp_call_count(sbi, foreground) \ + atomic_inc(&sbi->cp_call_count[(foreground)]) +#define stat_inc_cp_count(si) (F2FS_STAT(sbi)->cp_count++) +#define stat_io_skip_bggc_count(sbi) ((sbi)->io_skip_bggc++) +#define stat_other_skip_bggc_count(sbi) ((sbi)->other_skip_bggc++) +#define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++) +#define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--) +#define stat_inc_total_hit(sbi, type) (atomic64_inc(&(sbi)->total_hit_ext[type])) +#define stat_inc_rbtree_node_hit(sbi, type) (atomic64_inc(&(sbi)->read_hit_rbtree[type])) +#define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest)) +#define stat_inc_cached_node_hit(sbi, type) (atomic64_inc(&(sbi)->read_hit_cached[type])) +#define stat_inc_inline_xattr(inode) \ + do { \ + if (f2fs_has_inline_xattr(inode)) \ + (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \ + } while (0) +#define stat_dec_inline_xattr(inode) \ + do { \ + if (f2fs_has_inline_xattr(inode)) \ + (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \ + } while (0) +#define stat_inc_inline_inode(inode) \ + do { \ + if (f2fs_has_inline_data(inode)) \ + (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \ + } while (0) +#define stat_dec_inline_inode(inode) \ + do { \ + if (f2fs_has_inline_data(inode)) \ + (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \ + } while (0) +#define stat_inc_inline_dir(inode) \ + do { \ + if (f2fs_has_inline_dentry(inode)) \ + (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \ + } while (0) +#define stat_dec_inline_dir(inode) \ + do { \ + if (f2fs_has_inline_dentry(inode)) \ + (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \ + } while (0) +#define stat_inc_compr_inode(inode) \ + do { \ + if (f2fs_compressed_file(inode)) \ + (atomic_inc(&F2FS_I_SB(inode)->compr_inode)); \ + } while (0) +#define stat_dec_compr_inode(inode) \ + do { \ + if (f2fs_compressed_file(inode)) \ + (atomic_dec(&F2FS_I_SB(inode)->compr_inode)); \ + } while (0) +#define stat_add_compr_blocks(inode, blocks) \ + (atomic64_add(blocks, &F2FS_I_SB(inode)->compr_blocks)) +#define stat_sub_compr_blocks(inode, blocks) \ + (atomic64_sub(blocks, &F2FS_I_SB(inode)->compr_blocks)) +#define stat_inc_swapfile_inode(inode) \ + (atomic_inc(&F2FS_I_SB(inode)->swapfile_inode)) +#define stat_dec_swapfile_inode(inode) \ + (atomic_dec(&F2FS_I_SB(inode)->swapfile_inode)) +#define stat_inc_atomic_inode(inode) \ + (atomic_inc(&F2FS_I_SB(inode)->atomic_files)) +#define stat_dec_atomic_inode(inode) \ + (atomic_dec(&F2FS_I_SB(inode)->atomic_files)) +#define stat_inc_meta_count(sbi, blkaddr) \ + do { \ + if (blkaddr < SIT_I(sbi)->sit_base_addr) \ + atomic_inc(&(sbi)->meta_count[META_CP]); \ + else if (blkaddr < NM_I(sbi)->nat_blkaddr) \ + atomic_inc(&(sbi)->meta_count[META_SIT]); \ + else if (blkaddr < SM_I(sbi)->ssa_blkaddr) \ + atomic_inc(&(sbi)->meta_count[META_NAT]); \ + else if (blkaddr < SM_I(sbi)->main_blkaddr) \ + atomic_inc(&(sbi)->meta_count[META_SSA]); \ + } while (0) +#define stat_inc_seg_type(sbi, curseg) \ + ((sbi)->segment_count[(curseg)->alloc_type]++) +#define stat_inc_block_count(sbi, curseg) \ + ((sbi)->block_count[(curseg)->alloc_type]++) +#define stat_inc_inplace_blocks(sbi) \ + (atomic_inc(&(sbi)->inplace_count)) +#define stat_update_max_atomic_write(inode) \ + do { \ + int cur = atomic_read(&F2FS_I_SB(inode)->atomic_files); \ + int max = atomic_read(&F2FS_I_SB(inode)->max_aw_cnt); \ + if (cur > max) \ + atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur); \ + } while (0) +#define stat_inc_gc_call_count(sbi, foreground) \ + (F2FS_STAT(sbi)->gc_call_count[(foreground)]++) +#define stat_inc_gc_sec_count(sbi, type, gc_type) \ + (F2FS_STAT(sbi)->gc_secs[(type)][(gc_type)]++) +#define stat_inc_gc_seg_count(sbi, type, gc_type) \ + (F2FS_STAT(sbi)->gc_segs[(type)][(gc_type)]++) + +#define stat_inc_tot_blk_count(si, blks) \ + ((si)->tot_blks += (blks)) + +#define stat_inc_data_blk_count(sbi, blks, gc_type) \ + do { \ + struct f2fs_stat_info *si = F2FS_STAT(sbi); \ + stat_inc_tot_blk_count(si, blks); \ + si->data_blks += (blks); \ + si->bg_data_blks += ((gc_type) == BG_GC) ? (blks) : 0; \ + } while (0) + +#define stat_inc_node_blk_count(sbi, blks, gc_type) \ + do { \ + struct f2fs_stat_info *si = F2FS_STAT(sbi); \ + stat_inc_tot_blk_count(si, blks); \ + si->node_blks += (blks); \ + si->bg_node_blks += ((gc_type) == BG_GC) ? (blks) : 0; \ + } while (0) + +int f2fs_build_stats(struct f2fs_sb_info *sbi); +void f2fs_destroy_stats(struct f2fs_sb_info *sbi); +void __init f2fs_create_root_stats(void); +void f2fs_destroy_root_stats(void); +void f2fs_update_sit_info(struct f2fs_sb_info *sbi); +#else +#define stat_inc_cp_call_count(sbi, foreground) do { } while (0) +#define stat_inc_cp_count(sbi) do { } while (0) +#define stat_io_skip_bggc_count(sbi) do { } while (0) +#define stat_other_skip_bggc_count(sbi) do { } while (0) +#define stat_inc_dirty_inode(sbi, type) do { } while (0) +#define stat_dec_dirty_inode(sbi, type) do { } while (0) +#define stat_inc_total_hit(sbi, type) do { } while (0) +#define stat_inc_rbtree_node_hit(sbi, type) do { } while (0) +#define stat_inc_largest_node_hit(sbi) do { } while (0) +#define stat_inc_cached_node_hit(sbi, type) do { } while (0) +#define stat_inc_inline_xattr(inode) do { } while (0) +#define stat_dec_inline_xattr(inode) do { } while (0) +#define stat_inc_inline_inode(inode) do { } while (0) +#define stat_dec_inline_inode(inode) do { } while (0) +#define stat_inc_inline_dir(inode) do { } while (0) +#define stat_dec_inline_dir(inode) do { } while (0) +#define stat_inc_compr_inode(inode) do { } while (0) +#define stat_dec_compr_inode(inode) do { } while (0) +#define stat_add_compr_blocks(inode, blocks) do { } while (0) +#define stat_sub_compr_blocks(inode, blocks) do { } while (0) +#define stat_inc_swapfile_inode(inode) do { } while (0) +#define stat_dec_swapfile_inode(inode) do { } while (0) +#define stat_inc_atomic_inode(inode) do { } while (0) +#define stat_dec_atomic_inode(inode) do { } while (0) +#define stat_update_max_atomic_write(inode) do { } while (0) +#define stat_inc_meta_count(sbi, blkaddr) do { } while (0) +#define stat_inc_seg_type(sbi, curseg) do { } while (0) +#define stat_inc_block_count(sbi, curseg) do { } while (0) +#define stat_inc_inplace_blocks(sbi) do { } while (0) +#define stat_inc_gc_call_count(sbi, foreground) do { } while (0) +#define stat_inc_gc_sec_count(sbi, type, gc_type) do { } while (0) +#define stat_inc_gc_seg_count(sbi, type, gc_type) do { } while (0) +#define stat_inc_tot_blk_count(si, blks) do { } while (0) +#define stat_inc_data_blk_count(sbi, blks, gc_type) do { } while (0) +#define stat_inc_node_blk_count(sbi, blks, gc_type) do { } while (0) + +static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } +static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } +static inline void __init f2fs_create_root_stats(void) { } +static inline void f2fs_destroy_root_stats(void) { } +static inline void f2fs_update_sit_info(struct f2fs_sb_info *sbi) {} +#endif + +extern const struct file_operations f2fs_dir_operations; +extern const struct file_operations f2fs_file_operations; +extern const struct inode_operations f2fs_file_inode_operations; +extern const struct address_space_operations f2fs_dblock_aops; +extern const struct address_space_operations f2fs_node_aops; +extern const struct address_space_operations f2fs_meta_aops; +extern const struct inode_operations f2fs_dir_inode_operations; +extern const struct inode_operations f2fs_symlink_inode_operations; +extern const struct inode_operations f2fs_encrypted_symlink_inode_operations; +extern const struct inode_operations f2fs_special_inode_operations; +extern struct kmem_cache *f2fs_inode_entry_slab; + +/* + * inline.c + */ +bool f2fs_may_inline_data(struct inode *inode); +bool f2fs_sanity_check_inline_data(struct inode *inode); +bool f2fs_may_inline_dentry(struct inode *inode); +void f2fs_do_read_inline_data(struct page *page, struct page *ipage); +void f2fs_truncate_inline_inode(struct inode *inode, + struct page *ipage, u64 from); +int f2fs_read_inline_data(struct inode *inode, struct page *page); +int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page); +int f2fs_convert_inline_inode(struct inode *inode); +int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry); +int f2fs_write_inline_data(struct inode *inode, struct page *page); +int f2fs_recover_inline_data(struct inode *inode, struct page *npage); +struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir, + const struct f2fs_filename *fname, + struct page **res_page); +int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent, + struct page *ipage); +int f2fs_add_inline_entry(struct inode *dir, const struct f2fs_filename *fname, + struct inode *inode, nid_t ino, umode_t mode); +void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, + struct page *page, struct inode *dir, + struct inode *inode); +bool f2fs_empty_inline_dir(struct inode *dir); +int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx, + struct fscrypt_str *fstr); +int f2fs_inline_data_fiemap(struct inode *inode, + struct fiemap_extent_info *fieinfo, + __u64 start, __u64 len); + +/* + * shrinker.c + */ +unsigned long f2fs_shrink_count(struct shrinker *shrink, + struct shrink_control *sc); +unsigned long f2fs_shrink_scan(struct shrinker *shrink, + struct shrink_control *sc); +void f2fs_join_shrinker(struct f2fs_sb_info *sbi); +void f2fs_leave_shrinker(struct f2fs_sb_info *sbi); + +/* + * extent_cache.c + */ +bool sanity_check_extent_cache(struct inode *inode); +void f2fs_init_extent_tree(struct inode *inode); +void f2fs_drop_extent_tree(struct inode *inode); +void f2fs_destroy_extent_node(struct inode *inode); +void f2fs_destroy_extent_tree(struct inode *inode); +void f2fs_init_extent_cache_info(struct f2fs_sb_info *sbi); +int __init f2fs_create_extent_cache(void); +void f2fs_destroy_extent_cache(void); + +/* read extent cache ops */ +void f2fs_init_read_extent_tree(struct inode *inode, struct page *ipage); +bool f2fs_lookup_read_extent_cache(struct inode *inode, pgoff_t pgofs, + struct extent_info *ei); +bool f2fs_lookup_read_extent_cache_block(struct inode *inode, pgoff_t index, + block_t *blkaddr); +void f2fs_update_read_extent_cache(struct dnode_of_data *dn); +void f2fs_update_read_extent_cache_range(struct dnode_of_data *dn, + pgoff_t fofs, block_t blkaddr, unsigned int len); +unsigned int f2fs_shrink_read_extent_tree(struct f2fs_sb_info *sbi, + int nr_shrink); + +/* block age extent cache ops */ +void f2fs_init_age_extent_tree(struct inode *inode); +bool f2fs_lookup_age_extent_cache(struct inode *inode, pgoff_t pgofs, + struct extent_info *ei); +void f2fs_update_age_extent_cache(struct dnode_of_data *dn); +void f2fs_update_age_extent_cache_range(struct dnode_of_data *dn, + pgoff_t fofs, unsigned int len); +unsigned int f2fs_shrink_age_extent_tree(struct f2fs_sb_info *sbi, + int nr_shrink); + +/* + * sysfs.c + */ +#define MIN_RA_MUL 2 +#define MAX_RA_MUL 256 + +int __init f2fs_init_sysfs(void); +void f2fs_exit_sysfs(void); +int f2fs_register_sysfs(struct f2fs_sb_info *sbi); +void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi); + +/* verity.c */ +extern const struct fsverity_operations f2fs_verityops; + +/* + * crypto support + */ +static inline bool f2fs_encrypted_file(struct inode *inode) +{ + return IS_ENCRYPTED(inode) && S_ISREG(inode->i_mode); +} + +static inline void f2fs_set_encrypted_inode(struct inode *inode) +{ +#ifdef CONFIG_FS_ENCRYPTION + file_set_encrypt(inode); + f2fs_set_inode_flags(inode); +#endif +} + +/* + * Returns true if the reads of the inode's data need to undergo some + * postprocessing step, like decryption or authenticity verification. + */ +static inline bool f2fs_post_read_required(struct inode *inode) +{ + return f2fs_encrypted_file(inode) || fsverity_active(inode) || + f2fs_compressed_file(inode); +} + +/* + * compress.c + */ +#ifdef CONFIG_F2FS_FS_COMPRESSION +bool f2fs_is_compressed_page(struct page *page); +struct page *f2fs_compress_control_page(struct page *page); +int f2fs_prepare_compress_overwrite(struct inode *inode, + struct page **pagep, pgoff_t index, void **fsdata); +bool f2fs_compress_write_end(struct inode *inode, void *fsdata, + pgoff_t index, unsigned copied); +int f2fs_truncate_partial_cluster(struct inode *inode, u64 from, bool lock); +void f2fs_compress_write_end_io(struct bio *bio, struct page *page); +bool f2fs_is_compress_backend_ready(struct inode *inode); +bool f2fs_is_compress_level_valid(int alg, int lvl); +int __init f2fs_init_compress_mempool(void); +void f2fs_destroy_compress_mempool(void); +void f2fs_decompress_cluster(struct decompress_io_ctx *dic, bool in_task); +void f2fs_end_read_compressed_page(struct page *page, bool failed, + block_t blkaddr, bool in_task); +bool f2fs_cluster_is_empty(struct compress_ctx *cc); +bool f2fs_cluster_can_merge_page(struct compress_ctx *cc, pgoff_t index); +bool f2fs_all_cluster_page_ready(struct compress_ctx *cc, struct page **pages, + int index, int nr_pages, bool uptodate); +bool f2fs_sanity_check_cluster(struct dnode_of_data *dn); +void f2fs_compress_ctx_add_page(struct compress_ctx *cc, struct page *page); +int f2fs_write_multi_pages(struct compress_ctx *cc, + int *submitted, + struct writeback_control *wbc, + enum iostat_type io_type); +int f2fs_is_compressed_cluster(struct inode *inode, pgoff_t index); +void f2fs_update_read_extent_tree_range_compressed(struct inode *inode, + pgoff_t fofs, block_t blkaddr, + unsigned int llen, unsigned int c_len); +int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret, + unsigned nr_pages, sector_t *last_block_in_bio, + bool is_readahead, bool for_write); +struct decompress_io_ctx *f2fs_alloc_dic(struct compress_ctx *cc); +void f2fs_decompress_end_io(struct decompress_io_ctx *dic, bool failed, + bool in_task); +void f2fs_put_page_dic(struct page *page, bool in_task); +unsigned int f2fs_cluster_blocks_are_contiguous(struct dnode_of_data *dn); +int f2fs_init_compress_ctx(struct compress_ctx *cc); +void f2fs_destroy_compress_ctx(struct compress_ctx *cc, bool reuse); +void f2fs_init_compress_info(struct f2fs_sb_info *sbi); +int f2fs_init_compress_inode(struct f2fs_sb_info *sbi); +void f2fs_destroy_compress_inode(struct f2fs_sb_info *sbi); +int f2fs_init_page_array_cache(struct f2fs_sb_info *sbi); +void f2fs_destroy_page_array_cache(struct f2fs_sb_info *sbi); +int __init f2fs_init_compress_cache(void); +void f2fs_destroy_compress_cache(void); +struct address_space *COMPRESS_MAPPING(struct f2fs_sb_info *sbi); +void f2fs_invalidate_compress_page(struct f2fs_sb_info *sbi, block_t blkaddr); +void f2fs_cache_compressed_page(struct f2fs_sb_info *sbi, struct page *page, + nid_t ino, block_t blkaddr); +bool f2fs_load_compressed_page(struct f2fs_sb_info *sbi, struct page *page, + block_t blkaddr); +void f2fs_invalidate_compress_pages(struct f2fs_sb_info *sbi, nid_t ino); +#define inc_compr_inode_stat(inode) \ + do { \ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); \ + sbi->compr_new_inode++; \ + } while (0) +#define add_compr_block_stat(inode, blocks) \ + do { \ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); \ + int diff = F2FS_I(inode)->i_cluster_size - blocks; \ + sbi->compr_written_block += blocks; \ + sbi->compr_saved_block += diff; \ + } while (0) +#else +static inline bool f2fs_is_compressed_page(struct page *page) { return false; } +static inline bool f2fs_is_compress_backend_ready(struct inode *inode) +{ + if (!f2fs_compressed_file(inode)) + return true; + /* not support compression */ + return false; +} +static inline bool f2fs_is_compress_level_valid(int alg, int lvl) { return false; } +static inline struct page *f2fs_compress_control_page(struct page *page) +{ + WARN_ON_ONCE(1); + return ERR_PTR(-EINVAL); +} +static inline int __init f2fs_init_compress_mempool(void) { return 0; } +static inline void f2fs_destroy_compress_mempool(void) { } +static inline void f2fs_decompress_cluster(struct decompress_io_ctx *dic, + bool in_task) { } +static inline void f2fs_end_read_compressed_page(struct page *page, + bool failed, block_t blkaddr, bool in_task) +{ + WARN_ON_ONCE(1); +} +static inline void f2fs_put_page_dic(struct page *page, bool in_task) +{ + WARN_ON_ONCE(1); +} +static inline unsigned int f2fs_cluster_blocks_are_contiguous(struct dnode_of_data *dn) { return 0; } +static inline bool f2fs_sanity_check_cluster(struct dnode_of_data *dn) { return false; } +static inline int f2fs_init_compress_inode(struct f2fs_sb_info *sbi) { return 0; } +static inline void f2fs_destroy_compress_inode(struct f2fs_sb_info *sbi) { } +static inline int f2fs_init_page_array_cache(struct f2fs_sb_info *sbi) { return 0; } +static inline void f2fs_destroy_page_array_cache(struct f2fs_sb_info *sbi) { } +static inline int __init f2fs_init_compress_cache(void) { return 0; } +static inline void f2fs_destroy_compress_cache(void) { } +static inline void f2fs_invalidate_compress_page(struct f2fs_sb_info *sbi, + block_t blkaddr) { } +static inline void f2fs_cache_compressed_page(struct f2fs_sb_info *sbi, + struct page *page, nid_t ino, block_t blkaddr) { } +static inline bool f2fs_load_compressed_page(struct f2fs_sb_info *sbi, + struct page *page, block_t blkaddr) { return false; } +static inline void f2fs_invalidate_compress_pages(struct f2fs_sb_info *sbi, + nid_t ino) { } +#define inc_compr_inode_stat(inode) do { } while (0) +static inline void f2fs_update_read_extent_tree_range_compressed( + struct inode *inode, + pgoff_t fofs, block_t blkaddr, + unsigned int llen, unsigned int c_len) { } +#endif + +static inline int set_compress_context(struct inode *inode) +{ +#ifdef CONFIG_F2FS_FS_COMPRESSION + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + + F2FS_I(inode)->i_compress_algorithm = + F2FS_OPTION(sbi).compress_algorithm; + F2FS_I(inode)->i_log_cluster_size = + F2FS_OPTION(sbi).compress_log_size; + F2FS_I(inode)->i_compress_flag = + F2FS_OPTION(sbi).compress_chksum ? + BIT(COMPRESS_CHKSUM) : 0; + F2FS_I(inode)->i_cluster_size = + BIT(F2FS_I(inode)->i_log_cluster_size); + if ((F2FS_I(inode)->i_compress_algorithm == COMPRESS_LZ4 || + F2FS_I(inode)->i_compress_algorithm == COMPRESS_ZSTD) && + F2FS_OPTION(sbi).compress_level) + F2FS_I(inode)->i_compress_level = + F2FS_OPTION(sbi).compress_level; + F2FS_I(inode)->i_flags |= F2FS_COMPR_FL; + set_inode_flag(inode, FI_COMPRESSED_FILE); + stat_inc_compr_inode(inode); + inc_compr_inode_stat(inode); + f2fs_mark_inode_dirty_sync(inode, true); + return 0; +#else + return -EOPNOTSUPP; +#endif +} + +static inline bool f2fs_disable_compressed_file(struct inode *inode) +{ + struct f2fs_inode_info *fi = F2FS_I(inode); + + if (!f2fs_compressed_file(inode)) + return true; + if (S_ISREG(inode->i_mode) && F2FS_HAS_BLOCKS(inode)) + return false; + + fi->i_flags &= ~F2FS_COMPR_FL; + stat_dec_compr_inode(inode); + clear_inode_flag(inode, FI_COMPRESSED_FILE); + f2fs_mark_inode_dirty_sync(inode, true); + return true; +} + +#define F2FS_FEATURE_FUNCS(name, flagname) \ +static inline bool f2fs_sb_has_##name(struct f2fs_sb_info *sbi) \ +{ \ + return F2FS_HAS_FEATURE(sbi, F2FS_FEATURE_##flagname); \ +} + +F2FS_FEATURE_FUNCS(encrypt, ENCRYPT); +F2FS_FEATURE_FUNCS(blkzoned, BLKZONED); +F2FS_FEATURE_FUNCS(extra_attr, EXTRA_ATTR); +F2FS_FEATURE_FUNCS(project_quota, PRJQUOTA); +F2FS_FEATURE_FUNCS(inode_chksum, INODE_CHKSUM); +F2FS_FEATURE_FUNCS(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR); +F2FS_FEATURE_FUNCS(quota_ino, QUOTA_INO); +F2FS_FEATURE_FUNCS(inode_crtime, INODE_CRTIME); +F2FS_FEATURE_FUNCS(lost_found, LOST_FOUND); +F2FS_FEATURE_FUNCS(verity, VERITY); +F2FS_FEATURE_FUNCS(sb_chksum, SB_CHKSUM); +F2FS_FEATURE_FUNCS(casefold, CASEFOLD); +F2FS_FEATURE_FUNCS(compression, COMPRESSION); +F2FS_FEATURE_FUNCS(readonly, RO); + +#ifdef CONFIG_BLK_DEV_ZONED +static inline bool f2fs_blkz_is_seq(struct f2fs_sb_info *sbi, int devi, + block_t blkaddr) +{ + unsigned int zno = blkaddr / sbi->blocks_per_blkz; + + return test_bit(zno, FDEV(devi).blkz_seq); +} +#endif + +static inline int f2fs_bdev_index(struct f2fs_sb_info *sbi, + struct block_device *bdev) +{ + int i; + + if (!f2fs_is_multi_device(sbi)) + return 0; + + for (i = 0; i < sbi->s_ndevs; i++) + if (FDEV(i).bdev == bdev) + return i; + + WARN_ON(1); + return -1; +} + +static inline bool f2fs_hw_should_discard(struct f2fs_sb_info *sbi) +{ + return f2fs_sb_has_blkzoned(sbi); +} + +static inline bool f2fs_bdev_support_discard(struct block_device *bdev) +{ + return bdev_max_discard_sectors(bdev) || bdev_is_zoned(bdev); +} + +static inline bool f2fs_hw_support_discard(struct f2fs_sb_info *sbi) +{ + int i; + + if (!f2fs_is_multi_device(sbi)) + return f2fs_bdev_support_discard(sbi->sb->s_bdev); + + for (i = 0; i < sbi->s_ndevs; i++) + if (f2fs_bdev_support_discard(FDEV(i).bdev)) + return true; + return false; +} + +static inline bool f2fs_realtime_discard_enable(struct f2fs_sb_info *sbi) +{ + return (test_opt(sbi, DISCARD) && f2fs_hw_support_discard(sbi)) || + f2fs_hw_should_discard(sbi); +} + +static inline bool f2fs_hw_is_readonly(struct f2fs_sb_info *sbi) +{ + int i; + + if (!f2fs_is_multi_device(sbi)) + return bdev_read_only(sbi->sb->s_bdev); + + for (i = 0; i < sbi->s_ndevs; i++) + if (bdev_read_only(FDEV(i).bdev)) + return true; + return false; +} + +static inline bool f2fs_dev_is_readonly(struct f2fs_sb_info *sbi) +{ + return f2fs_sb_has_readonly(sbi) || f2fs_hw_is_readonly(sbi); +} + +static inline bool f2fs_lfs_mode(struct f2fs_sb_info *sbi) +{ + return F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS; +} + +static inline bool f2fs_low_mem_mode(struct f2fs_sb_info *sbi) +{ + return F2FS_OPTION(sbi).memory_mode == MEMORY_MODE_LOW; +} + +static inline bool f2fs_may_compress(struct inode *inode) +{ + if (IS_SWAPFILE(inode) || f2fs_is_pinned_file(inode) || + f2fs_is_atomic_file(inode) || f2fs_has_inline_data(inode) || + f2fs_is_mmap_file(inode)) + return false; + return S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode); +} + +static inline void f2fs_i_compr_blocks_update(struct inode *inode, + u64 blocks, bool add) +{ + struct f2fs_inode_info *fi = F2FS_I(inode); + int diff = fi->i_cluster_size - blocks; + + /* don't update i_compr_blocks if saved blocks were released */ + if (!add && !atomic_read(&fi->i_compr_blocks)) + return; + + if (add) { + atomic_add(diff, &fi->i_compr_blocks); + stat_add_compr_blocks(inode, diff); + } else { + atomic_sub(diff, &fi->i_compr_blocks); + stat_sub_compr_blocks(inode, diff); + } + f2fs_mark_inode_dirty_sync(inode, true); +} + +static inline bool f2fs_allow_multi_device_dio(struct f2fs_sb_info *sbi, + int flag) +{ + if (!f2fs_is_multi_device(sbi)) + return false; + if (flag != F2FS_GET_BLOCK_DIO) + return false; + return sbi->aligned_blksize; +} + +static inline bool f2fs_need_verity(const struct inode *inode, pgoff_t idx) +{ + return fsverity_active(inode) && + idx < DIV_ROUND_UP(inode->i_size, PAGE_SIZE); +} + +#ifdef CONFIG_F2FS_FAULT_INJECTION +extern void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate, + unsigned int type); +#else +#define f2fs_build_fault_attr(sbi, rate, type) do { } while (0) +#endif + +static inline bool is_journalled_quota(struct f2fs_sb_info *sbi) +{ +#ifdef CONFIG_QUOTA + if (f2fs_sb_has_quota_ino(sbi)) + return true; + if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] || + F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] || + F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) + return true; +#endif + return false; +} + +static inline bool f2fs_block_unit_discard(struct f2fs_sb_info *sbi) +{ + return F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_BLOCK; +} + +static inline void f2fs_io_schedule_timeout(long timeout) +{ + set_current_state(TASK_UNINTERRUPTIBLE); + io_schedule_timeout(timeout); +} + +static inline void f2fs_handle_page_eio(struct f2fs_sb_info *sbi, pgoff_t ofs, + enum page_type type) +{ + if (unlikely(f2fs_cp_error(sbi))) + return; + + if (ofs == sbi->page_eio_ofs[type]) { + if (sbi->page_eio_cnt[type]++ == MAX_RETRY_PAGE_EIO) + set_ckpt_flags(sbi, CP_ERROR_FLAG); + } else { + sbi->page_eio_ofs[type] = ofs; + sbi->page_eio_cnt[type] = 0; + } +} + +static inline bool f2fs_is_readonly(struct f2fs_sb_info *sbi) +{ + return f2fs_sb_has_readonly(sbi) || f2fs_readonly(sbi->sb); +} + +#define EFSBADCRC EBADMSG /* Bad CRC detected */ +#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */ + +#endif /* _LINUX_F2FS_H */ |