diff options
Diffstat (limited to 'fs/f2fs/sysfs.c')
| -rw-r--r-- | fs/f2fs/sysfs.c | 1352 |
1 files changed, 1352 insertions, 0 deletions
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c new file mode 100644 index 000000000..751a108e6 --- /dev/null +++ b/fs/f2fs/sysfs.c @@ -0,0 +1,1352 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * f2fs sysfs interface + * + * Copyright (c) 2012 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * Copyright (c) 2017 Chao Yu <chao@kernel.org> + */ +#include <linux/compiler.h> +#include <linux/proc_fs.h> +#include <linux/f2fs_fs.h> +#include <linux/seq_file.h> +#include <linux/unicode.h> +#include <linux/ioprio.h> +#include <linux/sysfs.h> + +#include "f2fs.h" +#include "segment.h" +#include "gc.h" +#include "iostat.h" +#include <trace/events/f2fs.h> + +static struct proc_dir_entry *f2fs_proc_root; + +/* Sysfs support for f2fs */ +enum { + GC_THREAD, /* struct f2fs_gc_thread */ + SM_INFO, /* struct f2fs_sm_info */ + DCC_INFO, /* struct discard_cmd_control */ + NM_INFO, /* struct f2fs_nm_info */ + F2FS_SBI, /* struct f2fs_sb_info */ +#ifdef CONFIG_F2FS_STAT_FS + STAT_INFO, /* struct f2fs_stat_info */ +#endif +#ifdef CONFIG_F2FS_FAULT_INJECTION + FAULT_INFO_RATE, /* struct f2fs_fault_info */ + FAULT_INFO_TYPE, /* struct f2fs_fault_info */ +#endif + RESERVED_BLOCKS, /* struct f2fs_sb_info */ + CPRC_INFO, /* struct ckpt_req_control */ + ATGC_INFO, /* struct atgc_management */ +}; + +static const char *gc_mode_names[MAX_GC_MODE] = { + "GC_NORMAL", + "GC_IDLE_CB", + "GC_IDLE_GREEDY", + "GC_IDLE_AT", + "GC_URGENT_HIGH", + "GC_URGENT_LOW", + "GC_URGENT_MID" +}; + +struct f2fs_attr { + struct attribute attr; + ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *); + ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *, + const char *, size_t); + int struct_type; + int offset; + int id; +}; + +static ssize_t f2fs_sbi_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf); + +static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type) +{ + if (struct_type == GC_THREAD) + return (unsigned char *)sbi->gc_thread; + else if (struct_type == SM_INFO) + return (unsigned char *)SM_I(sbi); + else if (struct_type == DCC_INFO) + return (unsigned char *)SM_I(sbi)->dcc_info; + else if (struct_type == NM_INFO) + return (unsigned char *)NM_I(sbi); + else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS) + return (unsigned char *)sbi; +#ifdef CONFIG_F2FS_FAULT_INJECTION + else if (struct_type == FAULT_INFO_RATE || + struct_type == FAULT_INFO_TYPE) + return (unsigned char *)&F2FS_OPTION(sbi).fault_info; +#endif +#ifdef CONFIG_F2FS_STAT_FS + else if (struct_type == STAT_INFO) + return (unsigned char *)F2FS_STAT(sbi); +#endif + else if (struct_type == CPRC_INFO) + return (unsigned char *)&sbi->cprc_info; + else if (struct_type == ATGC_INFO) + return (unsigned char *)&sbi->am; + return NULL; +} + +static ssize_t dirty_segments_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + return sprintf(buf, "%llu\n", + (unsigned long long)(dirty_segments(sbi))); +} + +static ssize_t free_segments_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + return sprintf(buf, "%llu\n", + (unsigned long long)(free_segments(sbi))); +} + +static ssize_t ovp_segments_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + return sprintf(buf, "%llu\n", + (unsigned long long)(overprovision_segments(sbi))); +} + +static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + return sprintf(buf, "%llu\n", + (unsigned long long)(sbi->kbytes_written + + ((f2fs_get_sectors_written(sbi) - + sbi->sectors_written_start) >> 1))); +} + +static ssize_t sb_status_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + return sprintf(buf, "%lx\n", sbi->s_flag); +} + +static ssize_t cp_status_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + return sprintf(buf, "%x\n", le32_to_cpu(F2FS_CKPT(sbi)->ckpt_flags)); +} + +static ssize_t pending_discard_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + if (!SM_I(sbi)->dcc_info) + return -EINVAL; + return sprintf(buf, "%llu\n", (unsigned long long)atomic_read( + &SM_I(sbi)->dcc_info->discard_cmd_cnt)); +} + +static ssize_t features_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + int len = 0; + + if (f2fs_sb_has_encrypt(sbi)) + len += scnprintf(buf, PAGE_SIZE - len, "%s", + "encryption"); + if (f2fs_sb_has_blkzoned(sbi)) + len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", + len ? ", " : "", "blkzoned"); + if (f2fs_sb_has_extra_attr(sbi)) + len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", + len ? ", " : "", "extra_attr"); + if (f2fs_sb_has_project_quota(sbi)) + len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", + len ? ", " : "", "projquota"); + if (f2fs_sb_has_inode_chksum(sbi)) + len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", + len ? ", " : "", "inode_checksum"); + if (f2fs_sb_has_flexible_inline_xattr(sbi)) + len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", + len ? ", " : "", "flexible_inline_xattr"); + if (f2fs_sb_has_quota_ino(sbi)) + len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", + len ? ", " : "", "quota_ino"); + if (f2fs_sb_has_inode_crtime(sbi)) + len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", + len ? ", " : "", "inode_crtime"); + if (f2fs_sb_has_lost_found(sbi)) + len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", + len ? ", " : "", "lost_found"); + if (f2fs_sb_has_verity(sbi)) + len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", + len ? ", " : "", "verity"); + if (f2fs_sb_has_sb_chksum(sbi)) + len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", + len ? ", " : "", "sb_checksum"); + if (f2fs_sb_has_casefold(sbi)) + len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", + len ? ", " : "", "casefold"); + if (f2fs_sb_has_readonly(sbi)) + len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", + len ? ", " : "", "readonly"); + if (f2fs_sb_has_compression(sbi)) + len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", + len ? ", " : "", "compression"); + len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", + len ? ", " : "", "pin_file"); + len += scnprintf(buf + len, PAGE_SIZE - len, "\n"); + return len; +} + +static ssize_t current_reserved_blocks_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + return sprintf(buf, "%u\n", sbi->current_reserved_blocks); +} + +static ssize_t unusable_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + block_t unusable; + + if (test_opt(sbi, DISABLE_CHECKPOINT)) + unusable = sbi->unusable_block_count; + else + unusable = f2fs_get_unusable_blocks(sbi); + return sprintf(buf, "%llu\n", (unsigned long long)unusable); +} + +static ssize_t encoding_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ +#if IS_ENABLED(CONFIG_UNICODE) + struct super_block *sb = sbi->sb; + + if (f2fs_sb_has_casefold(sbi)) + return sysfs_emit(buf, "UTF-8 (%d.%d.%d)\n", + (sb->s_encoding->version >> 16) & 0xff, + (sb->s_encoding->version >> 8) & 0xff, + sb->s_encoding->version & 0xff); +#endif + return sprintf(buf, "(none)"); +} + +static ssize_t mounted_time_sec_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + return sprintf(buf, "%llu", SIT_I(sbi)->mounted_time); +} + +#ifdef CONFIG_F2FS_STAT_FS +static ssize_t moved_blocks_foreground_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + struct f2fs_stat_info *si = F2FS_STAT(sbi); + + return sprintf(buf, "%llu\n", + (unsigned long long)(si->tot_blks - + (si->bg_data_blks + si->bg_node_blks))); +} + +static ssize_t moved_blocks_background_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + struct f2fs_stat_info *si = F2FS_STAT(sbi); + + return sprintf(buf, "%llu\n", + (unsigned long long)(si->bg_data_blks + si->bg_node_blks)); +} + +static ssize_t avg_vblocks_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + struct f2fs_stat_info *si = F2FS_STAT(sbi); + + si->dirty_count = dirty_segments(sbi); + f2fs_update_sit_info(sbi); + return sprintf(buf, "%llu\n", (unsigned long long)(si->avg_vblocks)); +} +#endif + +static ssize_t main_blkaddr_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + return sysfs_emit(buf, "%llu\n", + (unsigned long long)MAIN_BLKADDR(sbi)); +} + +static ssize_t f2fs_sbi_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + unsigned char *ptr = NULL; + unsigned int *ui; + + ptr = __struct_ptr(sbi, a->struct_type); + if (!ptr) + return -EINVAL; + + if (!strcmp(a->attr.name, "extension_list")) { + __u8 (*extlist)[F2FS_EXTENSION_LEN] = + sbi->raw_super->extension_list; + int cold_count = le32_to_cpu(sbi->raw_super->extension_count); + int hot_count = sbi->raw_super->hot_ext_count; + int len = 0, i; + + len += scnprintf(buf + len, PAGE_SIZE - len, + "cold file extension:\n"); + for (i = 0; i < cold_count; i++) + len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n", + extlist[i]); + + len += scnprintf(buf + len, PAGE_SIZE - len, + "hot file extension:\n"); + for (i = cold_count; i < cold_count + hot_count; i++) + len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n", + extlist[i]); + return len; + } + + if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) { + struct ckpt_req_control *cprc = &sbi->cprc_info; + int len = 0; + int class = IOPRIO_PRIO_CLASS(cprc->ckpt_thread_ioprio); + int data = IOPRIO_PRIO_DATA(cprc->ckpt_thread_ioprio); + + if (class == IOPRIO_CLASS_RT) + len += scnprintf(buf + len, PAGE_SIZE - len, "rt,"); + else if (class == IOPRIO_CLASS_BE) + len += scnprintf(buf + len, PAGE_SIZE - len, "be,"); + else + return -EINVAL; + + len += scnprintf(buf + len, PAGE_SIZE - len, "%d\n", data); + return len; + } + +#ifdef CONFIG_F2FS_FS_COMPRESSION + if (!strcmp(a->attr.name, "compr_written_block")) + return sysfs_emit(buf, "%llu\n", sbi->compr_written_block); + + if (!strcmp(a->attr.name, "compr_saved_block")) + return sysfs_emit(buf, "%llu\n", sbi->compr_saved_block); + + if (!strcmp(a->attr.name, "compr_new_inode")) + return sysfs_emit(buf, "%u\n", sbi->compr_new_inode); +#endif + + if (!strcmp(a->attr.name, "gc_urgent")) + return sysfs_emit(buf, "%s\n", + gc_mode_names[sbi->gc_mode]); + + if (!strcmp(a->attr.name, "gc_segment_mode")) + return sysfs_emit(buf, "%s\n", + gc_mode_names[sbi->gc_segment_mode]); + + if (!strcmp(a->attr.name, "gc_reclaimed_segments")) { + return sysfs_emit(buf, "%u\n", + sbi->gc_reclaimed_segs[sbi->gc_segment_mode]); + } + + if (!strcmp(a->attr.name, "current_atomic_write")) { + s64 current_write = atomic64_read(&sbi->current_atomic_write); + + return sysfs_emit(buf, "%lld\n", current_write); + } + + if (!strcmp(a->attr.name, "peak_atomic_write")) + return sysfs_emit(buf, "%lld\n", sbi->peak_atomic_write); + + if (!strcmp(a->attr.name, "committed_atomic_block")) + return sysfs_emit(buf, "%llu\n", sbi->committed_atomic_block); + + if (!strcmp(a->attr.name, "revoked_atomic_block")) + return sysfs_emit(buf, "%llu\n", sbi->revoked_atomic_block); + + ui = (unsigned int *)(ptr + a->offset); + + return sprintf(buf, "%u\n", *ui); +} + +static ssize_t __sbi_store(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, + const char *buf, size_t count) +{ + unsigned char *ptr; + unsigned long t; + unsigned int *ui; + ssize_t ret; + + ptr = __struct_ptr(sbi, a->struct_type); + if (!ptr) + return -EINVAL; + + if (!strcmp(a->attr.name, "extension_list")) { + const char *name = strim((char *)buf); + bool set = true, hot; + + if (!strncmp(name, "[h]", 3)) + hot = true; + else if (!strncmp(name, "[c]", 3)) + hot = false; + else + return -EINVAL; + + name += 3; + + if (*name == '!') { + name++; + set = false; + } + + if (!strlen(name) || strlen(name) >= F2FS_EXTENSION_LEN) + return -EINVAL; + + f2fs_down_write(&sbi->sb_lock); + + ret = f2fs_update_extension_list(sbi, name, hot, set); + if (ret) + goto out; + + ret = f2fs_commit_super(sbi, false); + if (ret) + f2fs_update_extension_list(sbi, name, hot, !set); +out: + f2fs_up_write(&sbi->sb_lock); + return ret ? ret : count; + } + + if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) { + const char *name = strim((char *)buf); + struct ckpt_req_control *cprc = &sbi->cprc_info; + int class; + long data; + int ret; + + if (!strncmp(name, "rt,", 3)) + class = IOPRIO_CLASS_RT; + else if (!strncmp(name, "be,", 3)) + class = IOPRIO_CLASS_BE; + else + return -EINVAL; + + name += 3; + ret = kstrtol(name, 10, &data); + if (ret) + return ret; + if (data >= IOPRIO_NR_LEVELS || data < 0) + return -EINVAL; + + cprc->ckpt_thread_ioprio = IOPRIO_PRIO_VALUE(class, data); + if (test_opt(sbi, MERGE_CHECKPOINT)) { + ret = set_task_ioprio(cprc->f2fs_issue_ckpt, + cprc->ckpt_thread_ioprio); + if (ret) + return ret; + } + + return count; + } + + ui = (unsigned int *)(ptr + a->offset); + + ret = kstrtoul(skip_spaces(buf), 0, &t); + if (ret < 0) + return ret; +#ifdef CONFIG_F2FS_FAULT_INJECTION + if (a->struct_type == FAULT_INFO_TYPE && t >= BIT(FAULT_MAX)) + return -EINVAL; + if (a->struct_type == FAULT_INFO_RATE && t >= UINT_MAX) + return -EINVAL; +#endif + if (a->struct_type == RESERVED_BLOCKS) { + spin_lock(&sbi->stat_lock); + if (t > (unsigned long)(sbi->user_block_count - + F2FS_OPTION(sbi).root_reserved_blocks - + sbi->blocks_per_seg * + SM_I(sbi)->additional_reserved_segments)) { + spin_unlock(&sbi->stat_lock); + return -EINVAL; + } + *ui = t; + sbi->current_reserved_blocks = min(sbi->reserved_blocks, + sbi->user_block_count - valid_user_blocks(sbi)); + spin_unlock(&sbi->stat_lock); + return count; + } + + if (!strcmp(a->attr.name, "discard_granularity")) { + if (t == 0 || t > MAX_PLIST_NUM) + return -EINVAL; + if (!f2fs_block_unit_discard(sbi)) + return -EINVAL; + if (t == *ui) + return count; + *ui = t; + return count; + } + + if (!strcmp(a->attr.name, "migration_granularity")) { + if (t == 0 || t > sbi->segs_per_sec) + return -EINVAL; + } + + if (!strcmp(a->attr.name, "trim_sections")) + return -EINVAL; + + if (!strcmp(a->attr.name, "gc_urgent")) { + if (t == 0) { + sbi->gc_mode = GC_NORMAL; + } else if (t == 1) { + sbi->gc_mode = GC_URGENT_HIGH; + if (sbi->gc_thread) { + sbi->gc_thread->gc_wake = 1; + wake_up_interruptible_all( + &sbi->gc_thread->gc_wait_queue_head); + wake_up_discard_thread(sbi, true); + } + } else if (t == 2) { + sbi->gc_mode = GC_URGENT_LOW; + } else if (t == 3) { + sbi->gc_mode = GC_URGENT_MID; + if (sbi->gc_thread) { + sbi->gc_thread->gc_wake = 1; + wake_up_interruptible_all( + &sbi->gc_thread->gc_wait_queue_head); + } + } else { + return -EINVAL; + } + return count; + } + if (!strcmp(a->attr.name, "gc_idle")) { + if (t == GC_IDLE_CB) { + sbi->gc_mode = GC_IDLE_CB; + } else if (t == GC_IDLE_GREEDY) { + sbi->gc_mode = GC_IDLE_GREEDY; + } else if (t == GC_IDLE_AT) { + if (!sbi->am.atgc_enabled) + return -EINVAL; + sbi->gc_mode = GC_IDLE_AT; + } else { + sbi->gc_mode = GC_NORMAL; + } + return count; + } + + if (!strcmp(a->attr.name, "gc_urgent_high_remaining")) { + spin_lock(&sbi->gc_urgent_high_lock); + sbi->gc_urgent_high_remaining = t; + spin_unlock(&sbi->gc_urgent_high_lock); + + return count; + } + +#ifdef CONFIG_F2FS_IOSTAT + if (!strcmp(a->attr.name, "iostat_enable")) { + sbi->iostat_enable = !!t; + if (!sbi->iostat_enable) + f2fs_reset_iostat(sbi); + return count; + } + + if (!strcmp(a->attr.name, "iostat_period_ms")) { + if (t < MIN_IOSTAT_PERIOD_MS || t > MAX_IOSTAT_PERIOD_MS) + return -EINVAL; + spin_lock_irq(&sbi->iostat_lock); + sbi->iostat_period_ms = (unsigned int)t; + spin_unlock_irq(&sbi->iostat_lock); + return count; + } +#endif + +#ifdef CONFIG_F2FS_FS_COMPRESSION + if (!strcmp(a->attr.name, "compr_written_block") || + !strcmp(a->attr.name, "compr_saved_block")) { + if (t != 0) + return -EINVAL; + sbi->compr_written_block = 0; + sbi->compr_saved_block = 0; + return count; + } + + if (!strcmp(a->attr.name, "compr_new_inode")) { + if (t != 0) + return -EINVAL; + sbi->compr_new_inode = 0; + return count; + } +#endif + + if (!strcmp(a->attr.name, "atgc_candidate_ratio")) { + if (t > 100) + return -EINVAL; + sbi->am.candidate_ratio = t; + return count; + } + + if (!strcmp(a->attr.name, "atgc_age_weight")) { + if (t > 100) + return -EINVAL; + sbi->am.age_weight = t; + return count; + } + + if (!strcmp(a->attr.name, "gc_segment_mode")) { + if (t < MAX_GC_MODE) + sbi->gc_segment_mode = t; + else + return -EINVAL; + return count; + } + + if (!strcmp(a->attr.name, "gc_reclaimed_segments")) { + if (t != 0) + return -EINVAL; + sbi->gc_reclaimed_segs[sbi->gc_segment_mode] = 0; + return count; + } + + if (!strcmp(a->attr.name, "seq_file_ra_mul")) { + if (t >= MIN_RA_MUL && t <= MAX_RA_MUL) + sbi->seq_file_ra_mul = t; + else + return -EINVAL; + return count; + } + + if (!strcmp(a->attr.name, "max_fragment_chunk")) { + if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE) + sbi->max_fragment_chunk = t; + else + return -EINVAL; + return count; + } + + if (!strcmp(a->attr.name, "max_fragment_hole")) { + if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE) + sbi->max_fragment_hole = t; + else + return -EINVAL; + return count; + } + + if (!strcmp(a->attr.name, "peak_atomic_write")) { + if (t != 0) + return -EINVAL; + sbi->peak_atomic_write = 0; + return count; + } + + if (!strcmp(a->attr.name, "committed_atomic_block")) { + if (t != 0) + return -EINVAL; + sbi->committed_atomic_block = 0; + return count; + } + + if (!strcmp(a->attr.name, "revoked_atomic_block")) { + if (t != 0) + return -EINVAL; + sbi->revoked_atomic_block = 0; + return count; + } + + *ui = (unsigned int)t; + + return count; +} + +static ssize_t f2fs_sbi_store(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, + const char *buf, size_t count) +{ + ssize_t ret; + bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") || + a->struct_type == GC_THREAD); + + if (gc_entry) { + if (!down_read_trylock(&sbi->sb->s_umount)) + return -EAGAIN; + } + ret = __sbi_store(a, sbi, buf, count); + if (gc_entry) + up_read(&sbi->sb->s_umount); + + return ret; +} + +static ssize_t f2fs_attr_show(struct kobject *kobj, + struct attribute *attr, char *buf) +{ + struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, + s_kobj); + struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); + + return a->show ? a->show(a, sbi, buf) : 0; +} + +static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr, + const char *buf, size_t len) +{ + struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, + s_kobj); + struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); + + return a->store ? a->store(a, sbi, buf, len) : 0; +} + +static void f2fs_sb_release(struct kobject *kobj) +{ + struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, + s_kobj); + complete(&sbi->s_kobj_unregister); +} + +/* + * Note that there are three feature list entries: + * 1) /sys/fs/f2fs/features + * : shows runtime features supported by in-kernel f2fs along with Kconfig. + * - ref. F2FS_FEATURE_RO_ATTR() + * + * 2) /sys/fs/f2fs/$s_id/features <deprecated> + * : shows on-disk features enabled by mkfs.f2fs, used for old kernels. This + * won't add new feature anymore, and thus, users should check entries in 3) + * instead of this 2). + * + * 3) /sys/fs/f2fs/$s_id/feature_list + * : shows on-disk features enabled by mkfs.f2fs per instance, which follows + * sysfs entry rule where each entry should expose single value. + * This list covers old feature list provided by 2) and beyond. Therefore, + * please add new on-disk feature in this list only. + * - ref. F2FS_SB_FEATURE_RO_ATTR() + */ +static ssize_t f2fs_feature_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + return sprintf(buf, "supported\n"); +} + +#define F2FS_FEATURE_RO_ATTR(_name) \ +static struct f2fs_attr f2fs_attr_##_name = { \ + .attr = {.name = __stringify(_name), .mode = 0444 }, \ + .show = f2fs_feature_show, \ +} + +static ssize_t f2fs_sb_feature_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + if (F2FS_HAS_FEATURE(sbi, a->id)) + return sprintf(buf, "supported\n"); + return sprintf(buf, "unsupported\n"); +} + +#define F2FS_SB_FEATURE_RO_ATTR(_name, _feat) \ +static struct f2fs_attr f2fs_attr_sb_##_name = { \ + .attr = {.name = __stringify(_name), .mode = 0444 }, \ + .show = f2fs_sb_feature_show, \ + .id = F2FS_FEATURE_##_feat, \ +} + +#define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \ +static struct f2fs_attr f2fs_attr_##_name = { \ + .attr = {.name = __stringify(_name), .mode = _mode }, \ + .show = _show, \ + .store = _store, \ + .struct_type = _struct_type, \ + .offset = _offset \ +} + +#define F2FS_RO_ATTR(struct_type, struct_name, name, elname) \ + F2FS_ATTR_OFFSET(struct_type, name, 0444, \ + f2fs_sbi_show, NULL, \ + offsetof(struct struct_name, elname)) + +#define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \ + F2FS_ATTR_OFFSET(struct_type, name, 0644, \ + f2fs_sbi_show, f2fs_sbi_store, \ + offsetof(struct struct_name, elname)) + +#define F2FS_GENERAL_RO_ATTR(name) \ +static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL) + +#define F2FS_STAT_ATTR(_struct_type, _struct_name, _name, _elname) \ +static struct f2fs_attr f2fs_attr_##_name = { \ + .attr = {.name = __stringify(_name), .mode = 0444 }, \ + .show = f2fs_sbi_show, \ + .struct_type = _struct_type, \ + .offset = offsetof(struct _struct_name, _elname), \ +} + +F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_urgent_sleep_time, + urgent_sleep_time); +F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time); +F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time); +F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle, gc_mode); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent, gc_mode); +F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments); +F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_small_discards, max_discards); +F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_discard_request, max_discard_request); +F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, min_discard_issue_time, min_discard_issue_time); +F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, mid_discard_issue_time, mid_discard_issue_time); +F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_discard_issue_time, max_discard_issue_time); +F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_granularity, discard_granularity); +F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, reserved_blocks, reserved_blocks); +F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections); +F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy); +F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util); +F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks); +F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_seq_blocks, min_seq_blocks); +F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_hot_blocks, min_hot_blocks); +F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ssr_sections, min_ssr_sections); +F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh); +F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages); +F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio); +F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, max_roll_forward_node_blocks, max_rf_node_blocks); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, migration_granularity, migration_granularity); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, discard_idle_interval, + interval_time[DISCARD_TIME]); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle_interval, interval_time[GC_TIME]); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, + umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]); +#ifdef CONFIG_F2FS_IOSTAT +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_period_ms, iostat_period_ms); +#endif +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_io_bytes, max_io_bytes); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold); +F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list); +#ifdef CONFIG_F2FS_FAULT_INJECTION +F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate); +F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type); +#endif +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, data_io_flag, data_io_flag); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, node_io_flag, node_io_flag); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent_high_remaining, gc_urgent_high_remaining); +F2FS_RW_ATTR(CPRC_INFO, ckpt_req_control, ckpt_thread_ioprio, ckpt_thread_ioprio); +F2FS_GENERAL_RO_ATTR(dirty_segments); +F2FS_GENERAL_RO_ATTR(free_segments); +F2FS_GENERAL_RO_ATTR(ovp_segments); +F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes); +F2FS_GENERAL_RO_ATTR(features); +F2FS_GENERAL_RO_ATTR(current_reserved_blocks); +F2FS_GENERAL_RO_ATTR(unusable); +F2FS_GENERAL_RO_ATTR(encoding); +F2FS_GENERAL_RO_ATTR(mounted_time_sec); +F2FS_GENERAL_RO_ATTR(main_blkaddr); +F2FS_GENERAL_RO_ATTR(pending_discard); +#ifdef CONFIG_F2FS_STAT_FS +F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_foreground_calls, cp_count); +F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_background_calls, bg_cp_count); +F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_foreground_calls, call_count); +F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_background_calls, bg_gc); +F2FS_GENERAL_RO_ATTR(moved_blocks_background); +F2FS_GENERAL_RO_ATTR(moved_blocks_foreground); +F2FS_GENERAL_RO_ATTR(avg_vblocks); +#endif + +#ifdef CONFIG_FS_ENCRYPTION +F2FS_FEATURE_RO_ATTR(encryption); +F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2); +#if IS_ENABLED(CONFIG_UNICODE) +F2FS_FEATURE_RO_ATTR(encrypted_casefold); +#endif +#endif /* CONFIG_FS_ENCRYPTION */ +#ifdef CONFIG_BLK_DEV_ZONED +F2FS_FEATURE_RO_ATTR(block_zoned); +F2FS_RO_ATTR(F2FS_SBI, f2fs_sb_info, unusable_blocks_per_sec, + unusable_blocks_per_sec); +#endif +F2FS_FEATURE_RO_ATTR(atomic_write); +F2FS_FEATURE_RO_ATTR(extra_attr); +F2FS_FEATURE_RO_ATTR(project_quota); +F2FS_FEATURE_RO_ATTR(inode_checksum); +F2FS_FEATURE_RO_ATTR(flexible_inline_xattr); +F2FS_FEATURE_RO_ATTR(quota_ino); +F2FS_FEATURE_RO_ATTR(inode_crtime); +F2FS_FEATURE_RO_ATTR(lost_found); +#ifdef CONFIG_FS_VERITY +F2FS_FEATURE_RO_ATTR(verity); +#endif +F2FS_FEATURE_RO_ATTR(sb_checksum); +#if IS_ENABLED(CONFIG_UNICODE) +F2FS_FEATURE_RO_ATTR(casefold); +#endif +F2FS_FEATURE_RO_ATTR(readonly); +#ifdef CONFIG_F2FS_FS_COMPRESSION +F2FS_FEATURE_RO_ATTR(compression); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compr_written_block, compr_written_block); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compr_saved_block, compr_saved_block); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compr_new_inode, compr_new_inode); +#endif +F2FS_FEATURE_RO_ATTR(pin_file); + +/* For ATGC */ +F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_candidate_ratio, candidate_ratio); +F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_candidate_count, max_candidate_count); +F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_age_weight, age_weight); +F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_age_threshold, age_threshold); + +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, seq_file_ra_mul, seq_file_ra_mul); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_segment_mode, gc_segment_mode); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_reclaimed_segments, gc_reclaimed_segs); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_fragment_chunk, max_fragment_chunk); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_fragment_hole, max_fragment_hole); + +/* For atomic write */ +F2FS_RO_ATTR(F2FS_SBI, f2fs_sb_info, current_atomic_write, current_atomic_write); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, peak_atomic_write, peak_atomic_write); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, committed_atomic_block, committed_atomic_block); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, revoked_atomic_block, revoked_atomic_block); + +#define ATTR_LIST(name) (&f2fs_attr_##name.attr) +static struct attribute *f2fs_attrs[] = { + ATTR_LIST(gc_urgent_sleep_time), + ATTR_LIST(gc_min_sleep_time), + ATTR_LIST(gc_max_sleep_time), + ATTR_LIST(gc_no_gc_sleep_time), + ATTR_LIST(gc_idle), + ATTR_LIST(gc_urgent), + ATTR_LIST(reclaim_segments), + ATTR_LIST(main_blkaddr), + ATTR_LIST(max_small_discards), + ATTR_LIST(max_discard_request), + ATTR_LIST(min_discard_issue_time), + ATTR_LIST(mid_discard_issue_time), + ATTR_LIST(max_discard_issue_time), + ATTR_LIST(discard_granularity), + ATTR_LIST(pending_discard), + ATTR_LIST(batched_trim_sections), + ATTR_LIST(ipu_policy), + ATTR_LIST(min_ipu_util), + ATTR_LIST(min_fsync_blocks), + ATTR_LIST(min_seq_blocks), + ATTR_LIST(min_hot_blocks), + ATTR_LIST(min_ssr_sections), + ATTR_LIST(max_victim_search), + ATTR_LIST(migration_granularity), + ATTR_LIST(dir_level), + ATTR_LIST(ram_thresh), + ATTR_LIST(ra_nid_pages), + ATTR_LIST(dirty_nats_ratio), + ATTR_LIST(max_roll_forward_node_blocks), + ATTR_LIST(cp_interval), + ATTR_LIST(idle_interval), + ATTR_LIST(discard_idle_interval), + ATTR_LIST(gc_idle_interval), + ATTR_LIST(umount_discard_timeout), +#ifdef CONFIG_F2FS_IOSTAT + ATTR_LIST(iostat_enable), + ATTR_LIST(iostat_period_ms), +#endif + ATTR_LIST(readdir_ra), + ATTR_LIST(max_io_bytes), + ATTR_LIST(gc_pin_file_thresh), + ATTR_LIST(extension_list), +#ifdef CONFIG_F2FS_FAULT_INJECTION + ATTR_LIST(inject_rate), + ATTR_LIST(inject_type), +#endif + ATTR_LIST(data_io_flag), + ATTR_LIST(node_io_flag), + ATTR_LIST(gc_urgent_high_remaining), + ATTR_LIST(ckpt_thread_ioprio), + ATTR_LIST(dirty_segments), + ATTR_LIST(free_segments), + ATTR_LIST(ovp_segments), + ATTR_LIST(unusable), + ATTR_LIST(lifetime_write_kbytes), + ATTR_LIST(features), + ATTR_LIST(reserved_blocks), + ATTR_LIST(current_reserved_blocks), + ATTR_LIST(encoding), + ATTR_LIST(mounted_time_sec), +#ifdef CONFIG_F2FS_STAT_FS + ATTR_LIST(cp_foreground_calls), + ATTR_LIST(cp_background_calls), + ATTR_LIST(gc_foreground_calls), + ATTR_LIST(gc_background_calls), + ATTR_LIST(moved_blocks_foreground), + ATTR_LIST(moved_blocks_background), + ATTR_LIST(avg_vblocks), +#endif +#ifdef CONFIG_BLK_DEV_ZONED + ATTR_LIST(unusable_blocks_per_sec), +#endif +#ifdef CONFIG_F2FS_FS_COMPRESSION + ATTR_LIST(compr_written_block), + ATTR_LIST(compr_saved_block), + ATTR_LIST(compr_new_inode), +#endif + /* For ATGC */ + ATTR_LIST(atgc_candidate_ratio), + ATTR_LIST(atgc_candidate_count), + ATTR_LIST(atgc_age_weight), + ATTR_LIST(atgc_age_threshold), + ATTR_LIST(seq_file_ra_mul), + ATTR_LIST(gc_segment_mode), + ATTR_LIST(gc_reclaimed_segments), + ATTR_LIST(max_fragment_chunk), + ATTR_LIST(max_fragment_hole), + ATTR_LIST(current_atomic_write), + ATTR_LIST(peak_atomic_write), + ATTR_LIST(committed_atomic_block), + ATTR_LIST(revoked_atomic_block), + NULL, +}; +ATTRIBUTE_GROUPS(f2fs); + +static struct attribute *f2fs_feat_attrs[] = { +#ifdef CONFIG_FS_ENCRYPTION + ATTR_LIST(encryption), + ATTR_LIST(test_dummy_encryption_v2), +#if IS_ENABLED(CONFIG_UNICODE) + ATTR_LIST(encrypted_casefold), +#endif +#endif /* CONFIG_FS_ENCRYPTION */ +#ifdef CONFIG_BLK_DEV_ZONED + ATTR_LIST(block_zoned), +#endif + ATTR_LIST(atomic_write), + ATTR_LIST(extra_attr), + ATTR_LIST(project_quota), + ATTR_LIST(inode_checksum), + ATTR_LIST(flexible_inline_xattr), + ATTR_LIST(quota_ino), + ATTR_LIST(inode_crtime), + ATTR_LIST(lost_found), +#ifdef CONFIG_FS_VERITY + ATTR_LIST(verity), +#endif + ATTR_LIST(sb_checksum), +#if IS_ENABLED(CONFIG_UNICODE) + ATTR_LIST(casefold), +#endif + ATTR_LIST(readonly), +#ifdef CONFIG_F2FS_FS_COMPRESSION + ATTR_LIST(compression), +#endif + ATTR_LIST(pin_file), + NULL, +}; +ATTRIBUTE_GROUPS(f2fs_feat); + +F2FS_GENERAL_RO_ATTR(sb_status); +F2FS_GENERAL_RO_ATTR(cp_status); +static struct attribute *f2fs_stat_attrs[] = { + ATTR_LIST(sb_status), + ATTR_LIST(cp_status), + NULL, +}; +ATTRIBUTE_GROUPS(f2fs_stat); + +F2FS_SB_FEATURE_RO_ATTR(encryption, ENCRYPT); +F2FS_SB_FEATURE_RO_ATTR(block_zoned, BLKZONED); +F2FS_SB_FEATURE_RO_ATTR(extra_attr, EXTRA_ATTR); +F2FS_SB_FEATURE_RO_ATTR(project_quota, PRJQUOTA); +F2FS_SB_FEATURE_RO_ATTR(inode_checksum, INODE_CHKSUM); +F2FS_SB_FEATURE_RO_ATTR(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR); +F2FS_SB_FEATURE_RO_ATTR(quota_ino, QUOTA_INO); +F2FS_SB_FEATURE_RO_ATTR(inode_crtime, INODE_CRTIME); +F2FS_SB_FEATURE_RO_ATTR(lost_found, LOST_FOUND); +F2FS_SB_FEATURE_RO_ATTR(verity, VERITY); +F2FS_SB_FEATURE_RO_ATTR(sb_checksum, SB_CHKSUM); +F2FS_SB_FEATURE_RO_ATTR(casefold, CASEFOLD); +F2FS_SB_FEATURE_RO_ATTR(compression, COMPRESSION); +F2FS_SB_FEATURE_RO_ATTR(readonly, RO); + +static struct attribute *f2fs_sb_feat_attrs[] = { + ATTR_LIST(sb_encryption), + ATTR_LIST(sb_block_zoned), + ATTR_LIST(sb_extra_attr), + ATTR_LIST(sb_project_quota), + ATTR_LIST(sb_inode_checksum), + ATTR_LIST(sb_flexible_inline_xattr), + ATTR_LIST(sb_quota_ino), + ATTR_LIST(sb_inode_crtime), + ATTR_LIST(sb_lost_found), + ATTR_LIST(sb_verity), + ATTR_LIST(sb_sb_checksum), + ATTR_LIST(sb_casefold), + ATTR_LIST(sb_compression), + ATTR_LIST(sb_readonly), + NULL, +}; +ATTRIBUTE_GROUPS(f2fs_sb_feat); + +static const struct sysfs_ops f2fs_attr_ops = { + .show = f2fs_attr_show, + .store = f2fs_attr_store, +}; + +static struct kobj_type f2fs_sb_ktype = { + .default_groups = f2fs_groups, + .sysfs_ops = &f2fs_attr_ops, + .release = f2fs_sb_release, +}; + +static struct kobj_type f2fs_ktype = { + .sysfs_ops = &f2fs_attr_ops, +}; + +static struct kset f2fs_kset = { + .kobj = {.ktype = &f2fs_ktype}, +}; + +static struct kobj_type f2fs_feat_ktype = { + .default_groups = f2fs_feat_groups, + .sysfs_ops = &f2fs_attr_ops, +}; + +static struct kobject f2fs_feat = { + .kset = &f2fs_kset, +}; + +static ssize_t f2fs_stat_attr_show(struct kobject *kobj, + struct attribute *attr, char *buf) +{ + struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, + s_stat_kobj); + struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); + + return a->show ? a->show(a, sbi, buf) : 0; +} + +static ssize_t f2fs_stat_attr_store(struct kobject *kobj, struct attribute *attr, + const char *buf, size_t len) +{ + struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, + s_stat_kobj); + struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); + + return a->store ? a->store(a, sbi, buf, len) : 0; +} + +static void f2fs_stat_kobj_release(struct kobject *kobj) +{ + struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, + s_stat_kobj); + complete(&sbi->s_stat_kobj_unregister); +} + +static const struct sysfs_ops f2fs_stat_attr_ops = { + .show = f2fs_stat_attr_show, + .store = f2fs_stat_attr_store, +}; + +static struct kobj_type f2fs_stat_ktype = { + .default_groups = f2fs_stat_groups, + .sysfs_ops = &f2fs_stat_attr_ops, + .release = f2fs_stat_kobj_release, +}; + +static ssize_t f2fs_sb_feat_attr_show(struct kobject *kobj, + struct attribute *attr, char *buf) +{ + struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, + s_feature_list_kobj); + struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); + + return a->show ? a->show(a, sbi, buf) : 0; +} + +static void f2fs_feature_list_kobj_release(struct kobject *kobj) +{ + struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, + s_feature_list_kobj); + complete(&sbi->s_feature_list_kobj_unregister); +} + +static const struct sysfs_ops f2fs_feature_list_attr_ops = { + .show = f2fs_sb_feat_attr_show, +}; + +static struct kobj_type f2fs_feature_list_ktype = { + .default_groups = f2fs_sb_feat_groups, + .sysfs_ops = &f2fs_feature_list_attr_ops, + .release = f2fs_feature_list_kobj_release, +}; + +static int __maybe_unused segment_info_seq_show(struct seq_file *seq, + void *offset) +{ + struct super_block *sb = seq->private; + struct f2fs_sb_info *sbi = F2FS_SB(sb); + unsigned int total_segs = + le32_to_cpu(sbi->raw_super->segment_count_main); + int i; + + seq_puts(seq, "format: segment_type|valid_blocks\n" + "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); + + for (i = 0; i < total_segs; i++) { + struct seg_entry *se = get_seg_entry(sbi, i); + + if ((i % 10) == 0) + seq_printf(seq, "%-10d", i); + seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks); + if ((i % 10) == 9 || i == (total_segs - 1)) + seq_putc(seq, '\n'); + else + seq_putc(seq, ' '); + } + + return 0; +} + +static int __maybe_unused segment_bits_seq_show(struct seq_file *seq, + void *offset) +{ + struct super_block *sb = seq->private; + struct f2fs_sb_info *sbi = F2FS_SB(sb); + unsigned int total_segs = + le32_to_cpu(sbi->raw_super->segment_count_main); + int i, j; + + seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n" + "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); + + for (i = 0; i < total_segs; i++) { + struct seg_entry *se = get_seg_entry(sbi, i); + + seq_printf(seq, "%-10d", i); + seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks); + for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++) + seq_printf(seq, " %.2x", se->cur_valid_map[j]); + seq_putc(seq, '\n'); + } + return 0; +} + +static int __maybe_unused victim_bits_seq_show(struct seq_file *seq, + void *offset) +{ + struct super_block *sb = seq->private; + struct f2fs_sb_info *sbi = F2FS_SB(sb); + struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); + int i; + + seq_puts(seq, "format: victim_secmap bitmaps\n"); + + for (i = 0; i < MAIN_SECS(sbi); i++) { + if ((i % 10) == 0) + seq_printf(seq, "%-10d", i); + seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0); + if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1)) + seq_putc(seq, '\n'); + else + seq_putc(seq, ' '); + } + return 0; +} + +int __init f2fs_init_sysfs(void) +{ + int ret; + + kobject_set_name(&f2fs_kset.kobj, "f2fs"); + f2fs_kset.kobj.parent = fs_kobj; + ret = kset_register(&f2fs_kset); + if (ret) + return ret; + + ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype, + NULL, "features"); + if (ret) { + kobject_put(&f2fs_feat); + kset_unregister(&f2fs_kset); + } else { + f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); + } + return ret; +} + +void f2fs_exit_sysfs(void) +{ + kobject_put(&f2fs_feat); + kset_unregister(&f2fs_kset); + remove_proc_entry("fs/f2fs", NULL); + f2fs_proc_root = NULL; +} + +int f2fs_register_sysfs(struct f2fs_sb_info *sbi) +{ + struct super_block *sb = sbi->sb; + int err; + + sbi->s_kobj.kset = &f2fs_kset; + init_completion(&sbi->s_kobj_unregister); + err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL, + "%s", sb->s_id); + if (err) + goto put_sb_kobj; + + sbi->s_stat_kobj.kset = &f2fs_kset; + init_completion(&sbi->s_stat_kobj_unregister); + err = kobject_init_and_add(&sbi->s_stat_kobj, &f2fs_stat_ktype, + &sbi->s_kobj, "stat"); + if (err) + goto put_stat_kobj; + + sbi->s_feature_list_kobj.kset = &f2fs_kset; + init_completion(&sbi->s_feature_list_kobj_unregister); + err = kobject_init_and_add(&sbi->s_feature_list_kobj, + &f2fs_feature_list_ktype, + &sbi->s_kobj, "feature_list"); + if (err) + goto put_feature_list_kobj; + + if (f2fs_proc_root) + sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); + + if (sbi->s_proc) { + proc_create_single_data("segment_info", 0444, sbi->s_proc, + segment_info_seq_show, sb); + proc_create_single_data("segment_bits", 0444, sbi->s_proc, + segment_bits_seq_show, sb); +#ifdef CONFIG_F2FS_IOSTAT + proc_create_single_data("iostat_info", 0444, sbi->s_proc, + iostat_info_seq_show, sb); +#endif + proc_create_single_data("victim_bits", 0444, sbi->s_proc, + victim_bits_seq_show, sb); + } + return 0; +put_feature_list_kobj: + kobject_put(&sbi->s_feature_list_kobj); + wait_for_completion(&sbi->s_feature_list_kobj_unregister); +put_stat_kobj: + kobject_put(&sbi->s_stat_kobj); + wait_for_completion(&sbi->s_stat_kobj_unregister); +put_sb_kobj: + kobject_put(&sbi->s_kobj); + wait_for_completion(&sbi->s_kobj_unregister); + return err; +} + +void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi) +{ + if (sbi->s_proc) { +#ifdef CONFIG_F2FS_IOSTAT + remove_proc_entry("iostat_info", sbi->s_proc); +#endif + remove_proc_entry("segment_info", sbi->s_proc); + remove_proc_entry("segment_bits", sbi->s_proc); + remove_proc_entry("victim_bits", sbi->s_proc); + remove_proc_entry(sbi->sb->s_id, f2fs_proc_root); + } + + kobject_del(&sbi->s_stat_kobj); + kobject_put(&sbi->s_stat_kobj); + wait_for_completion(&sbi->s_stat_kobj_unregister); + kobject_del(&sbi->s_feature_list_kobj); + kobject_put(&sbi->s_feature_list_kobj); + wait_for_completion(&sbi->s_feature_list_kobj_unregister); + + kobject_del(&sbi->s_kobj); + kobject_put(&sbi->s_kobj); + wait_for_completion(&sbi->s_kobj_unregister); +} |