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- // 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 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);
- 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)
- #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_io_aware_gran, discard_io_aware_gran);
- F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_urgent_util, discard_urgent_util);
- F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_granularity, discard_granularity);
- F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_ordered_discard, max_ordered_discard);
- F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, reserved_blocks, reserved_blocks);
- 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_remaining_trials, gc_remaining_trials);
- 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);
- F2FS_GENERAL_RO_ATTR(gc_mode);
- #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);
- F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compress_percent, compress_percent);
- F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compress_watermark, compress_watermark);
- #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);
- /* For block age extent cache */
- F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, hot_data_age_threshold, hot_data_age_threshold);
- F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, warm_data_age_threshold, warm_data_age_threshold);
- F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, last_age_weight, last_age_weight);
- #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) {
- 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);
- 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)
- {
- if (sbi->s_proc)
- 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);
- }
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