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-rw-r--r--fs/f2fs/sysfs.c1550
1 files changed, 1550 insertions, 0 deletions
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
new file mode 100644
index 0000000000..417fae9689
--- /dev/null
+++ b/fs/f2fs/sysfs.c
@@ -0,0 +1,1550 @@
+// 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 *a, struct f2fs_sb_info *sbi, char *buf);
+ ssize_t (*store)(struct f2fs_attr *a, struct f2fs_sb_info *sbi,
+ const char *buf, size_t len);
+ 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 sysfs_emit(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 sysfs_emit(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 sysfs_emit(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 sysfs_emit(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 sysfs_emit(buf, "%lx\n", sbi->s_flag);
+}
+
+static ssize_t cp_status_show(struct f2fs_attr *a,
+ struct f2fs_sb_info *sbi, char *buf)
+{
+ return sysfs_emit(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 sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read(
+ &SM_I(sbi)->dcc_info->discard_cmd_cnt));
+}
+
+static ssize_t gc_mode_show(struct f2fs_attr *a,
+ struct f2fs_sb_info *sbi, char *buf)
+{
+ return sysfs_emit(buf, "%s\n", gc_mode_names[sbi->gc_mode]);
+}
+
+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 sysfs_emit(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 sysfs_emit(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 sysfs_emit(buf, "(none)\n");
+}
+
+static ssize_t mounted_time_sec_show(struct f2fs_attr *a,
+ struct f2fs_sb_info *sbi, char *buf)
+{
+ return sysfs_emit(buf, "%llu\n", 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 sysfs_emit(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 sysfs_emit(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 sysfs_emit(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 class = IOPRIO_PRIO_CLASS(cprc->ckpt_thread_ioprio);
+ int data = IOPRIO_PRIO_DATA(cprc->ckpt_thread_ioprio);
+
+ if (class != IOPRIO_CLASS_RT && class != IOPRIO_CLASS_BE)
+ return -EINVAL;
+
+ return sysfs_emit(buf, "%s,%d\n",
+ class == IOPRIO_CLASS_RT ? "rt" : "be", data);
+ }
+
+#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_segment_mode"))
+ return sysfs_emit(buf, "%u\n", 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);
+
+#ifdef CONFIG_F2FS_STAT_FS
+ if (!strcmp(a->attr.name, "cp_foreground_calls"))
+ return sysfs_emit(buf, "%d\n",
+ atomic_read(&sbi->cp_call_count[TOTAL_CALL]) -
+ atomic_read(&sbi->cp_call_count[BACKGROUND]));
+ if (!strcmp(a->attr.name, "cp_background_calls"))
+ return sysfs_emit(buf, "%d\n",
+ atomic_read(&sbi->cp_call_count[BACKGROUND]));
+#endif
+
+ ui = (unsigned int *)(ptr + a->offset);
+
+ return sysfs_emit(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_io_aware_gran")) {
+ if (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, "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, "max_ordered_discard")) {
+ if (t == 0 || t > MAX_PLIST_NUM)
+ return -EINVAL;
+ if (!f2fs_block_unit_discard(sbi))
+ return -EINVAL;
+ *ui = t;
+ return count;
+ }
+
+ if (!strcmp(a->attr.name, "discard_urgent_util")) {
+ if (t > 100)
+ return -EINVAL;
+ *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, "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 = true;
+ 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 = true;
+ 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_remaining_trials")) {
+ spin_lock(&sbi->gc_remaining_trials_lock);
+ sbi->gc_remaining_trials = t;
+ spin_unlock(&sbi->gc_remaining_trials_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;
+ }
+
+ if (!strcmp(a->attr.name, "compress_percent")) {
+ if (t == 0 || t > 100)
+ return -EINVAL;
+ *ui = t;
+ return count;
+ }
+
+ if (!strcmp(a->attr.name, "compress_watermark")) {
+ if (t == 0 || t > 100)
+ return -EINVAL;
+ *ui = t;
+ 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;
+ }
+
+ if (!strcmp(a->attr.name, "readdir_ra")) {
+ sbi->readdir_ra = !!t;
+ return count;
+ }
+
+ if (!strcmp(a->attr.name, "hot_data_age_threshold")) {
+ if (t == 0 || t >= sbi->warm_data_age_threshold)
+ return -EINVAL;
+ if (t == *ui)
+ return count;
+ *ui = (unsigned int)t;
+ return count;
+ }
+
+ if (!strcmp(a->attr.name, "warm_data_age_threshold")) {
+ if (t <= sbi->hot_data_age_threshold)
+ return -EINVAL;
+ if (t == *ui)
+ return count;
+ *ui = (unsigned int)t;
+ return count;
+ }
+
+ if (!strcmp(a->attr.name, "last_age_weight")) {
+ if (t > 100)
+ return -EINVAL;
+ if (t == *ui)
+ return count;
+ *ui = (unsigned int)t;
+ return count;
+ }
+
+ if (!strcmp(a->attr.name, "ipu_policy")) {
+ if (t >= BIT(F2FS_IPU_MAX))
+ return -EINVAL;
+ if (t && f2fs_lfs_mode(sbi))
+ return -EINVAL;
+ SM_I(sbi)->ipu_policy = (unsigned int)t;
+ 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 sysfs_emit(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 sysfs_emit(buf, "supported\n");
+ return sysfs_emit(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)
+
+#ifdef CONFIG_F2FS_STAT_FS
+#define STAT_INFO_RO_ATTR(name, elname) \
+ F2FS_RO_ATTR(STAT_INFO, f2fs_stat_info, name, elname)
+#endif
+
+#define GC_THREAD_RW_ATTR(name, elname) \
+ F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, name, elname)
+
+#define SM_INFO_RW_ATTR(name, elname) \
+ F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, name, elname)
+
+#define SM_INFO_GENERAL_RW_ATTR(elname) \
+ SM_INFO_RW_ATTR(elname, elname)
+
+#define DCC_INFO_RW_ATTR(name, elname) \
+ F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, name, elname)
+
+#define DCC_INFO_GENERAL_RW_ATTR(elname) \
+ DCC_INFO_RW_ATTR(elname, elname)
+
+#define NM_INFO_RW_ATTR(name, elname) \
+ F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, name, elname)
+
+#define NM_INFO_GENERAL_RW_ATTR(elname) \
+ NM_INFO_RW_ATTR(elname, elname)
+
+#define F2FS_SBI_RW_ATTR(name, elname) \
+ F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, name, elname)
+
+#define F2FS_SBI_GENERAL_RW_ATTR(elname) \
+ F2FS_SBI_RW_ATTR(elname, elname)
+
+#define F2FS_SBI_GENERAL_RO_ATTR(elname) \
+ F2FS_RO_ATTR(F2FS_SBI, f2fs_sb_info, elname, elname)
+
+#ifdef CONFIG_F2FS_FAULT_INJECTION
+#define FAULT_INFO_GENERAL_RW_ATTR(type, elname) \
+ F2FS_RW_ATTR(type, f2fs_fault_info, elname, elname)
+#endif
+
+#define RESERVED_BLOCKS_GENERAL_RW_ATTR(elname) \
+ F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, elname, elname)
+
+#define CPRC_INFO_GENERAL_RW_ATTR(elname) \
+ F2FS_RW_ATTR(CPRC_INFO, ckpt_req_control, elname, elname)
+
+#define ATGC_INFO_RW_ATTR(name, elname) \
+ F2FS_RW_ATTR(ATGC_INFO, atgc_management, name, elname)
+
+/* GC_THREAD ATTR */
+GC_THREAD_RW_ATTR(gc_urgent_sleep_time, urgent_sleep_time);
+GC_THREAD_RW_ATTR(gc_min_sleep_time, min_sleep_time);
+GC_THREAD_RW_ATTR(gc_max_sleep_time, max_sleep_time);
+GC_THREAD_RW_ATTR(gc_no_gc_sleep_time, no_gc_sleep_time);
+
+/* SM_INFO ATTR */
+SM_INFO_RW_ATTR(reclaim_segments, rec_prefree_segments);
+SM_INFO_GENERAL_RW_ATTR(ipu_policy);
+SM_INFO_GENERAL_RW_ATTR(min_ipu_util);
+SM_INFO_GENERAL_RW_ATTR(min_fsync_blocks);
+SM_INFO_GENERAL_RW_ATTR(min_seq_blocks);
+SM_INFO_GENERAL_RW_ATTR(min_hot_blocks);
+SM_INFO_GENERAL_RW_ATTR(min_ssr_sections);
+
+/* DCC_INFO ATTR */
+DCC_INFO_RW_ATTR(max_small_discards, max_discards);
+DCC_INFO_GENERAL_RW_ATTR(max_discard_request);
+DCC_INFO_GENERAL_RW_ATTR(min_discard_issue_time);
+DCC_INFO_GENERAL_RW_ATTR(mid_discard_issue_time);
+DCC_INFO_GENERAL_RW_ATTR(max_discard_issue_time);
+DCC_INFO_GENERAL_RW_ATTR(discard_io_aware_gran);
+DCC_INFO_GENERAL_RW_ATTR(discard_urgent_util);
+DCC_INFO_GENERAL_RW_ATTR(discard_granularity);
+DCC_INFO_GENERAL_RW_ATTR(max_ordered_discard);
+
+/* NM_INFO ATTR */
+NM_INFO_RW_ATTR(max_roll_forward_node_blocks, max_rf_node_blocks);
+NM_INFO_GENERAL_RW_ATTR(ram_thresh);
+NM_INFO_GENERAL_RW_ATTR(ra_nid_pages);
+NM_INFO_GENERAL_RW_ATTR(dirty_nats_ratio);
+
+/* F2FS_SBI ATTR */
+F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
+F2FS_SBI_RW_ATTR(gc_idle, gc_mode);
+F2FS_SBI_RW_ATTR(gc_urgent, gc_mode);
+F2FS_SBI_RW_ATTR(cp_interval, interval_time[CP_TIME]);
+F2FS_SBI_RW_ATTR(idle_interval, interval_time[REQ_TIME]);
+F2FS_SBI_RW_ATTR(discard_idle_interval, interval_time[DISCARD_TIME]);
+F2FS_SBI_RW_ATTR(gc_idle_interval, interval_time[GC_TIME]);
+F2FS_SBI_RW_ATTR(umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]);
+F2FS_SBI_RW_ATTR(gc_pin_file_thresh, gc_pin_file_threshold);
+F2FS_SBI_RW_ATTR(gc_reclaimed_segments, gc_reclaimed_segs);
+F2FS_SBI_GENERAL_RW_ATTR(max_victim_search);
+F2FS_SBI_GENERAL_RW_ATTR(migration_granularity);
+F2FS_SBI_GENERAL_RW_ATTR(dir_level);
+#ifdef CONFIG_F2FS_IOSTAT
+F2FS_SBI_GENERAL_RW_ATTR(iostat_enable);
+F2FS_SBI_GENERAL_RW_ATTR(iostat_period_ms);
+#endif
+F2FS_SBI_GENERAL_RW_ATTR(readdir_ra);
+F2FS_SBI_GENERAL_RW_ATTR(max_io_bytes);
+F2FS_SBI_GENERAL_RW_ATTR(data_io_flag);
+F2FS_SBI_GENERAL_RW_ATTR(node_io_flag);
+F2FS_SBI_GENERAL_RW_ATTR(gc_remaining_trials);
+F2FS_SBI_GENERAL_RW_ATTR(seq_file_ra_mul);
+F2FS_SBI_GENERAL_RW_ATTR(gc_segment_mode);
+F2FS_SBI_GENERAL_RW_ATTR(max_fragment_chunk);
+F2FS_SBI_GENERAL_RW_ATTR(max_fragment_hole);
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+F2FS_SBI_GENERAL_RW_ATTR(compr_written_block);
+F2FS_SBI_GENERAL_RW_ATTR(compr_saved_block);
+F2FS_SBI_GENERAL_RW_ATTR(compr_new_inode);
+F2FS_SBI_GENERAL_RW_ATTR(compress_percent);
+F2FS_SBI_GENERAL_RW_ATTR(compress_watermark);
+#endif
+/* atomic write */
+F2FS_SBI_GENERAL_RO_ATTR(current_atomic_write);
+F2FS_SBI_GENERAL_RW_ATTR(peak_atomic_write);
+F2FS_SBI_GENERAL_RW_ATTR(committed_atomic_block);
+F2FS_SBI_GENERAL_RW_ATTR(revoked_atomic_block);
+/* block age extent cache */
+F2FS_SBI_GENERAL_RW_ATTR(hot_data_age_threshold);
+F2FS_SBI_GENERAL_RW_ATTR(warm_data_age_threshold);
+F2FS_SBI_GENERAL_RW_ATTR(last_age_weight);
+#ifdef CONFIG_BLK_DEV_ZONED
+F2FS_SBI_GENERAL_RO_ATTR(unusable_blocks_per_sec);
+#endif
+
+/* STAT_INFO ATTR */
+#ifdef CONFIG_F2FS_STAT_FS
+STAT_INFO_RO_ATTR(cp_foreground_calls, cp_call_count[FOREGROUND]);
+STAT_INFO_RO_ATTR(cp_background_calls, cp_call_count[BACKGROUND]);
+STAT_INFO_RO_ATTR(gc_foreground_calls, gc_call_count[FOREGROUND]);
+STAT_INFO_RO_ATTR(gc_background_calls, gc_call_count[BACKGROUND]);
+#endif
+
+/* FAULT_INFO ATTR */
+#ifdef CONFIG_F2FS_FAULT_INJECTION
+FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_RATE, inject_rate);
+FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_TYPE, inject_type);
+#endif
+
+/* RESERVED_BLOCKS ATTR */
+RESERVED_BLOCKS_GENERAL_RW_ATTR(reserved_blocks);
+
+/* CPRC_INFO ATTR */
+CPRC_INFO_GENERAL_RW_ATTR(ckpt_thread_ioprio);
+
+/* ATGC_INFO ATTR */
+ATGC_INFO_RW_ATTR(atgc_candidate_ratio, candidate_ratio);
+ATGC_INFO_RW_ATTR(atgc_candidate_count, max_candidate_count);
+ATGC_INFO_RW_ATTR(atgc_age_weight, age_weight);
+ATGC_INFO_RW_ATTR(atgc_age_threshold, age_threshold);
+
+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);
+F2FS_GENERAL_RO_ATTR(gc_mode);
+#ifdef CONFIG_F2FS_STAT_FS
+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);
+#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);
+#endif
+F2FS_FEATURE_RO_ATTR(pin_file);
+
+#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_io_aware_gran),
+ ATTR_LIST(discard_urgent_util),
+ ATTR_LIST(discard_granularity),
+ ATTR_LIST(max_ordered_discard),
+ ATTR_LIST(pending_discard),
+ ATTR_LIST(gc_mode),
+ 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_remaining_trials),
+ 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),
+ ATTR_LIST(compress_percent),
+ ATTR_LIST(compress_watermark),
+#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),
+ ATTR_LIST(hot_data_age_threshold),
+ ATTR_LIST(warm_data_age_threshold),
+ ATTR_LIST(last_age_weight),
+ 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 const struct kobj_type f2fs_sb_ktype = {
+ .default_groups = f2fs_groups,
+ .sysfs_ops = &f2fs_attr_ops,
+ .release = f2fs_sb_release,
+};
+
+static const struct kobj_type f2fs_ktype = {
+ .sysfs_ops = &f2fs_attr_ops,
+};
+
+static struct kset f2fs_kset = {
+ .kobj = {.ktype = &f2fs_ktype},
+};
+
+static const 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 const 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 const 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;
+}
+
+static int __maybe_unused discard_plist_seq_show(struct seq_file *seq,
+ void *offset)
+{
+ struct super_block *sb = seq->private;
+ struct f2fs_sb_info *sbi = F2FS_SB(sb);
+ struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
+ int i, count;
+
+ seq_puts(seq, "Discard pend list(Show diacrd_cmd count on each entry, .:not exist):\n");
+ if (!f2fs_realtime_discard_enable(sbi))
+ return 0;
+
+ if (dcc) {
+ mutex_lock(&dcc->cmd_lock);
+ for (i = 0; i < MAX_PLIST_NUM; i++) {
+ struct list_head *pend_list;
+ struct discard_cmd *dc, *tmp;
+
+ if (i % 8 == 0)
+ seq_printf(seq, " %-3d", i);
+ count = 0;
+ pend_list = &dcc->pend_list[i];
+ list_for_each_entry_safe(dc, tmp, pend_list, list)
+ count++;
+ if (count)
+ seq_printf(seq, " %7d", count);
+ else
+ seq_puts(seq, " .");
+ if (i % 8 == 7)
+ seq_putc(seq, '\n');
+ }
+ seq_putc(seq, '\n');
+ mutex_unlock(&dcc->cmd_lock);
+ }
+
+ 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)
+ goto put_kobject;
+
+ f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
+ if (!f2fs_proc_root) {
+ ret = -ENOMEM;
+ goto put_kobject;
+ }
+
+ return 0;
+put_kobject:
+ kobject_put(&f2fs_feat);
+ kset_unregister(&f2fs_kset);
+ 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;
+
+ sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
+ if (!sbi->s_proc) {
+ err = -ENOMEM;
+ goto put_feature_list_kobj;
+ }
+
+ 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);
+ proc_create_single_data("discard_plist_info", 0444, sbi->s_proc,
+ discard_plist_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)
+{
+ remove_proc_subtree(sbi->sb->s_id, f2fs_proc_root);
+
+ kobject_put(&sbi->s_stat_kobj);
+ wait_for_completion(&sbi->s_stat_kobj_unregister);
+ kobject_put(&sbi->s_feature_list_kobj);
+ wait_for_completion(&sbi->s_feature_list_kobj_unregister);
+
+ kobject_put(&sbi->s_kobj);
+ wait_for_completion(&sbi->s_kobj_unregister);
+}