// 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 <[email protected]>
*/
#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 issued_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->issued_discard));
}
static ssize_t queued_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->queued_discard));
}
static ssize_t undiscard_blks_show(struct f2fs_attr *a,
struct f2fs_sb_info *sbi, char *buf)
{
if (!SM_I(sbi)->dcc_info)
return -EINVAL;
return sysfs_emit(buf, "%u\n",
SM_I(sbi)->dcc_info->undiscard_blks);
}
static ssize_t atgc_enabled_show(struct f2fs_attr *a,
struct f2fs_sb_info *sbi, char *buf)
{
return sysfs_emit(buf, "%d\n", sbi->am.atgc_enabled ? 1 : 0);
}
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 += sysfs_emit_at(buf, len, "%s",
"encryption");
if (f2fs_sb_has_blkzoned(sbi))
len += sysfs_emit_at(buf, len, "%s%s",
len ? ", " : "", "blkzoned");
if (f2fs_sb_has_extra_attr(sbi))
len += sysfs_emit_at(buf, len, "%s%s",
len ? ", " : "", "extra_attr");
if (f2fs_sb_has_project_quota(sbi))
len += sysfs_emit_at(buf, len, "%s%s",
len ? ", " : "", "projquota");
if (f2fs_sb_has_inode_chksum(sbi))
len += sysfs_emit_at(buf, len, "%s%s",
len ? ", " : "", "inode_checksum");
if (f2fs_sb_has_flexible_inline_xattr(sbi))
len += sysfs_emit_at(buf, len, "%s%s",
len ? ", " : "", "flexible_inline_xattr");
if (f2fs_sb_has_quota_ino(sbi))
len += sysfs_emit_at(buf, len, "%s%s",
len ? ", " : "", "quota_ino");
if (f2fs_sb_has_inode_crtime(sbi))
len += sysfs_emit_at(buf, len, "%s%s",
len ? ", " : "", "inode_crtime");
if (f2fs_sb_has_lost_found(sbi))
len += sysfs_emit_at(buf, len, "%s%s",
len ? ", " : "", "lost_found");
if (f2fs_sb_has_verity(sbi))
len += sysfs_emit_at(buf, len, "%s%s",
len ? ", " : "", "verity");
if (f2fs_sb_has_sb_chksum(sbi))
len += sysfs_emit_at(buf, len, "%s%s",
len ? ", " : "", "sb_checksum");
if (f2fs_sb_has_casefold(sbi))
len += sysfs_emit_at(buf, len, "%s%s",
len ? ", " : "", "casefold");
if (f2fs_sb_has_readonly(sbi))
len += sysfs_emit_at(buf, len, "%s%s",
len ? ", " : "", "readonly");
if (f2fs_sb_has_compression(sbi))
len += sysfs_emit_at(buf, len, "%s%s",
len ? ", " : "", "compression");
len += sysfs_emit_at(buf, len, "%s%s",
len ? ", " : "", "pin_file");
len += sysfs_emit_at(buf, 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 += sysfs_emit_at(buf, len, "cold file extension:\n");
for (i = 0; i < cold_count; i++)
len += sysfs_emit_at(buf, len, "%s\n", extlist[i]);
len += sysfs_emit_at(buf, len, "hot file extension:\n");
for (i = cold_count; i < cold_count + hot_count; i++)
len += sysfs_emit_at(buf, 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 level = IOPRIO_PRIO_LEVEL(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", level);
}
#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 level;
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, &level);
if (ret)
return ret;
if (level >= IOPRIO_NR_LEVELS || level < 0)
return -EINVAL;
cprc->ckpt_thread_ioprio = IOPRIO_PRIO_VALUE(class, level);
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) {
if (f2fs_build_fault_attr(sbi, 0, t))
return -EINVAL;
return count;
}
if (a->struct_type == FAULT_INFO_RATE) {
if (f2fs_build_fault_attr(sbi, t, 0))
return -EINVAL;
return count;
}
#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 -
SEGS_TO_BLKS(sbi,
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, "discard_io_aware")) {
if (t >= DPOLICY_IO_AWARE_MAX)
return -EINVAL;
*ui = t;
return count;
}
if (!strcmp(a->attr.name, "migration_granularity")) {
if (t == 0 || t > SEGS_PER_SEC(sbi))
return -EINVAL;
}
if (!strcmp(a->attr.name, "migration_window_granularity")) {
if (t == 0 || t > SEGS_PER_SEC(sbi))
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_BLK_DEV_ZONED
if (!strcmp(a->attr.name, "blkzone_alloc_policy")) {
if (t < BLKZONE_ALLOC_PRIOR_SEQ || t > BLKZONE_ALLOC_PRIOR_CONV)
return -EINVAL;
sbi->blkzone_alloc_policy = t;
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_pin_file_threshold")) {
if (t > MAX_GC_FAILED_PINNED_FILES)
return -EINVAL;
sbi->gc_pin_file_threshold = t;
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;
/* allow F2FS_IPU_NOCACHE only for IPU in the pinned file */
if (f2fs_lfs_mode(sbi) && (t & ~BIT(F2FS_IPU_NOCACHE)))
return -EINVAL;
SM_I(sbi)->ipu_policy = (unsigned int)t;
return count;
}
if (!strcmp(a->attr.name, "dir_level")) {
if (t > MAX_DIR_HASH_DEPTH)
return -EINVAL;
sbi->dir_level = 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);
GC_THREAD_RW_ATTR(gc_no_zoned_gc_percent, no_zoned_gc_percent);
GC_THREAD_RW_ATTR(gc_boost_zoned_gc_percent, boost_zoned_gc_percent);
GC_THREAD_RW_ATTR(gc_valid_thresh_ratio, valid_thresh_ratio);
/* 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);
SM_INFO_GENERAL_RW_ATTR(reserved_segments);
/* 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);
DCC_INFO_GENERAL_RW_ATTR(discard_io_aware);
/* 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(migration_window_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);
F2FS_SBI_GENERAL_RW_ATTR(blkzone_alloc_policy);
#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(atgc_enabled);
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_no_zoned_gc_percent),
ATTR_LIST(gc_boost_zoned_gc_percent),
ATTR_LIST(gc_valid_thresh_ratio),
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(discard_io_aware),
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(reserved_segments),
ATTR_LIST(max_victim_search),
ATTR_LIST(migration_granularity),
ATTR_LIST(migration_window_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),
ATTR_LIST(blkzone_alloc_policy),
#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(atgc_enabled),
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);
F2FS_GENERAL_RO_ATTR(issued_discard);
F2FS_GENERAL_RO_ATTR(queued_discard);
F2FS_GENERAL_RO_ATTR(undiscard_blks);
static struct attribute *f2fs_stat_attrs[] = {
ATTR_LIST(sb_status),
ATTR_LIST(cp_status),
ATTR_LIST(issued_discard),
ATTR_LIST(queued_discard),
ATTR_LIST(undiscard_blks),
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;
}
static int __maybe_unused disk_map_seq_show(struct seq_file *seq,
void *offset)
{
struct super_block *sb = seq->private;
struct f2fs_sb_info *sbi = F2FS_SB(sb);
int i;
seq_printf(seq, "Address Layout : %5luB Block address (# of Segments)\n",
F2FS_BLKSIZE);
seq_printf(seq, " SB : %12s\n", "0/1024B");
seq_printf(seq, " seg0_blkaddr : 0x%010x\n", SEG0_BLKADDR(sbi));
seq_printf(seq, " Checkpoint : 0x%010x (%10d)\n",
le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr), 2);
seq_printf(seq, " SIT : 0x%010x (%10d)\n",
SIT_I(sbi)->sit_base_addr,
le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_sit));
seq_printf(seq, " NAT : 0x%010x (%10d)\n",
NM_I(sbi)->nat_blkaddr,
le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_nat));
seq_printf(seq, " SSA : 0x%010x (%10d)\n",
SM_I(sbi)->ssa_blkaddr,
le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_ssa));
seq_printf(seq, " Main : 0x%010x (%10d)\n",
SM_I(sbi)->main_blkaddr,
le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main));
seq_printf(seq, " # of Sections : %12d\n",
le32_to_cpu(F2FS_RAW_SUPER(sbi)->section_count));
seq_printf(seq, " Segs/Sections : %12d\n",
SEGS_PER_SEC(sbi));
seq_printf(seq, " Section size : %12d MB\n",
SEGS_PER_SEC(sbi) << 1);
if (!f2fs_is_multi_device(sbi))
return 0;
seq_puts(seq, "\nDisk Map for multi devices:\n");
for (i = 0; i < sbi->s_ndevs; i++)
seq_printf(seq, "Disk:%2d (zoned=%d): 0x%010x - 0x%010x on %s\n",
i, bdev_is_zoned(FDEV(i).bdev),
FDEV(i).start_blk, FDEV(i).end_blk,
FDEV(i).path);
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);
proc_create_single_data("disk_map", 0444, sbi->s_proc,
disk_map_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);
}
Codebase Browser
linux