As reported, status debugfs entry shows inconsistent GC stats as below:
GC calls: 6008 (BG: 6161)
- data segments : 3053 (BG: 3053)
- node segments : 2955 (BG: 2955)
Total GC calls is larger than BGGC calls, the reason is:
- f2fs_stat_info.call_count accounts total migrated section count
by f2fs_gc()
- f2fs_stat_info.bg_gc accounts total call times of f2fs_gc() from
background gc_thread
Another issue is gc_foreground_calls sysfs entry shows total GC call
count rather than FGGC call count.
This patch changes as below for fix:
- account GC calls and migrated segment count separately
- support to account migrated section count if it enables large section
mode
- fix to show correct value in gc_foreground_calls sysfs entry
Fixes: fc7100ea2a52 ("f2fs: Add f2fs stats to sysfs")
Signed-off-by: Chao Yu <[email protected]>
---
fs/f2fs/debug.c | 24 ++++++++++++++++++------
fs/f2fs/f2fs.h | 42 +++++++++++++++++++++---------------------
fs/f2fs/file.c | 4 ++++
fs/f2fs/gc.c | 13 +++++++------
fs/f2fs/segment.c | 1 +
fs/f2fs/super.c | 1 +
fs/f2fs/sysfs.c | 4 ++--
7 files changed, 54 insertions(+), 35 deletions(-)
diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index 61c35b59126e..c7cf453dce83 100644
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -511,12 +511,24 @@ static int stat_show(struct seq_file *s, void *v)
seq_printf(s, " - Total : %4d\n", si->nr_total_ckpt);
seq_printf(s, " - Cur time : %4d(ms)\n", si->cur_ckpt_time);
seq_printf(s, " - Peak time : %4d(ms)\n", si->peak_ckpt_time);
- seq_printf(s, "GC calls: %d (BG: %d)\n",
- si->call_count, si->bg_gc);
- seq_printf(s, " - data segments : %d (%d)\n",
- si->data_segs, si->bg_data_segs);
- seq_printf(s, " - node segments : %d (%d)\n",
- si->node_segs, si->bg_node_segs);
+ seq_printf(s, "GC calls: %d (gc_thread: %d)\n",
+ si->gc_call_count[BACKGROUND] +
+ si->gc_call_count[FOREGROUND],
+ si->gc_call_count[BACKGROUND]);
+ if (__is_large_section(sbi)) {
+ seq_printf(s, " - data sections : %d (BG: %d)\n",
+ si->gc_secs[DATA][BG_GC] + si->gc_secs[DATA][FG_GC],
+ si->gc_secs[DATA][BG_GC]);
+ seq_printf(s, " - node sections : %d (BG: %d)\n",
+ si->gc_secs[NODE][BG_GC] + si->gc_secs[NODE][FG_GC],
+ si->gc_secs[NODE][BG_GC]);
+ }
+ seq_printf(s, " - data segments : %d (BG: %d)\n",
+ si->gc_segs[DATA][BG_GC] + si->gc_segs[DATA][FG_GC],
+ si->gc_segs[DATA][BG_GC]);
+ seq_printf(s, " - node segments : %d (BG: %d)\n",
+ si->gc_segs[NODE][BG_GC] + si->gc_segs[NODE][FG_GC],
+ si->gc_segs[NODE][BG_GC]);
seq_puts(s, " - Reclaimed segs :\n");
seq_printf(s, " - Normal : %d\n", sbi->gc_reclaimed_segs[GC_NORMAL]);
seq_printf(s, " - Idle CB : %d\n", sbi->gc_reclaimed_segs[GC_IDLE_CB]);
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index da02e120e5ea..9c99c608787a 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -3860,6 +3860,12 @@ void f2fs_destroy_recovery_cache(void);
/*
* debug.c
*/
+enum {
+ BACKGROUND,
+ FOREGROUND,
+ MAX_CALL_TYPE
+};
+
#ifdef CONFIG_F2FS_STAT_FS
struct f2fs_stat_info {
struct list_head stat_list;
@@ -3885,7 +3891,7 @@ struct f2fs_stat_info {
int nats, dirty_nats, sits, dirty_sits;
int free_nids, avail_nids, alloc_nids;
int total_count, utilization;
- int bg_gc, nr_wb_cp_data, nr_wb_data;
+ int nr_wb_cp_data, nr_wb_data;
int nr_rd_data, nr_rd_node, nr_rd_meta;
int nr_dio_read, nr_dio_write;
unsigned int io_skip_bggc, other_skip_bggc;
@@ -3905,9 +3911,11 @@ struct f2fs_stat_info {
int rsvd_segs, overp_segs;
int dirty_count, node_pages, meta_pages, compress_pages;
int compress_page_hit;
- int prefree_count, call_count, cp_count, bg_cp_count;
- int tot_segs, node_segs, data_segs, free_segs, free_secs;
- int bg_node_segs, bg_data_segs;
+ int prefree_count, free_segs, free_secs;
+ int cp_count, bg_cp_count;
+ int gc_call_count[MAX_CALL_TYPE];
+ int gc_segs[2][2];
+ int gc_secs[2][2];
int tot_blks, data_blks, node_blks;
int bg_data_blks, bg_node_blks;
int curseg[NR_CURSEG_TYPE];
@@ -3931,8 +3939,6 @@ static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
#define stat_inc_cp_count(si) ((si)->cp_count++)
#define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
-#define stat_inc_call_count(si) ((si)->call_count++)
-#define stat_inc_bggc_count(si) ((si)->bg_gc++)
#define stat_io_skip_bggc_count(sbi) ((sbi)->io_skip_bggc++)
#define stat_other_skip_bggc_count(sbi) ((sbi)->other_skip_bggc++)
#define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
@@ -4017,18 +4023,12 @@ static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
if (cur > max) \
atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur); \
} while (0)
-#define stat_inc_seg_count(sbi, type, gc_type) \
- do { \
- struct f2fs_stat_info *si = F2FS_STAT(sbi); \
- si->tot_segs++; \
- if ((type) == SUM_TYPE_DATA) { \
- si->data_segs++; \
- si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
- } else { \
- si->node_segs++; \
- si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
- } \
- } while (0)
+#define stat_inc_gc_call_count(sbi, foreground) \
+ (F2FS_STAT(sbi)->gc_call_count[(foreground)]++)
+#define stat_inc_gc_sec_count(sbi, type, gc_type) \
+ (F2FS_STAT(sbi)->gc_secs[(type)][(gc_type)]++)
+#define stat_inc_gc_seg_count(sbi, type, gc_type) \
+ (F2FS_STAT(sbi)->gc_segs[(type)][(gc_type)]++)
#define stat_inc_tot_blk_count(si, blks) \
((si)->tot_blks += (blks))
@@ -4057,8 +4057,6 @@ void f2fs_update_sit_info(struct f2fs_sb_info *sbi);
#else
#define stat_inc_cp_count(si) do { } while (0)
#define stat_inc_bg_cp_count(si) do { } while (0)
-#define stat_inc_call_count(si) do { } while (0)
-#define stat_inc_bggc_count(si) do { } while (0)
#define stat_io_skip_bggc_count(sbi) do { } while (0)
#define stat_other_skip_bggc_count(sbi) do { } while (0)
#define stat_inc_dirty_inode(sbi, type) do { } while (0)
@@ -4086,7 +4084,9 @@ void f2fs_update_sit_info(struct f2fs_sb_info *sbi);
#define stat_inc_seg_type(sbi, curseg) do { } while (0)
#define stat_inc_block_count(sbi, curseg) do { } while (0)
#define stat_inc_inplace_blocks(sbi) do { } while (0)
-#define stat_inc_seg_count(sbi, type, gc_type) do { } while (0)
+#define stat_inc_gc_call_count(sbi, foreground) do { } while (0)
+#define stat_inc_gc_sec_count(sbi, type, gc_type) do { } while (0)
+#define stat_inc_gc_seg_count(sbi, type, gc_type) do { } while (0)
#define stat_inc_tot_blk_count(si, blks) do { } while (0)
#define stat_inc_data_blk_count(sbi, blks, gc_type) do { } while (0)
#define stat_inc_node_blk_count(sbi, blks, gc_type) do { } while (0)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 74f79e7c8c02..ff5494c255f6 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1728,6 +1728,7 @@ static int f2fs_expand_inode_data(struct inode *inode, loff_t offset,
if (has_not_enough_free_secs(sbi, 0,
GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))) {
f2fs_down_write(&sbi->gc_lock);
+ stat_inc_gc_call_count(sbi, FOREGROUND);
err = f2fs_gc(sbi, &gc_control);
if (err && err != -ENODATA)
goto out_err;
@@ -2476,6 +2477,7 @@ static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
gc_control.init_gc_type = sync ? FG_GC : BG_GC;
gc_control.err_gc_skipped = sync;
+ stat_inc_gc_call_count(sbi, FOREGROUND);
ret = f2fs_gc(sbi, &gc_control);
out:
mnt_drop_write_file(filp);
@@ -2519,6 +2521,7 @@ static int __f2fs_ioc_gc_range(struct file *filp, struct f2fs_gc_range *range)
}
gc_control.victim_segno = GET_SEGNO(sbi, range->start);
+ stat_inc_gc_call_count(sbi, FOREGROUND);
ret = f2fs_gc(sbi, &gc_control);
if (ret) {
if (ret == -EBUSY)
@@ -3001,6 +3004,7 @@ static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
sm->last_victim[ALLOC_NEXT] = end_segno + 1;
gc_control.victim_segno = start_segno;
+ stat_inc_gc_call_count(sbi, FOREGROUND);
ret = f2fs_gc(sbi, &gc_control);
if (ret == -EAGAIN)
ret = 0;
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 01effd3fcb6c..68c3250fb3d2 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -121,8 +121,8 @@ static int gc_thread_func(void *data)
else
increase_sleep_time(gc_th, &wait_ms);
do_gc:
- if (!foreground)
- stat_inc_bggc_count(sbi->stat_info);
+ stat_inc_gc_call_count(sbi, foreground ?
+ FOREGROUND : BACKGROUND);
sync_mode = F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC;
@@ -1685,6 +1685,7 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi,
int seg_freed = 0, migrated = 0;
unsigned char type = IS_DATASEG(get_seg_entry(sbi, segno)->type) ?
SUM_TYPE_DATA : SUM_TYPE_NODE;
+ unsigned char data_type = (type == SUM_TYPE_DATA) ? DATA : NODE;
int submitted = 0;
if (__is_large_section(sbi))
@@ -1766,7 +1767,7 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi,
segno, gc_type,
force_migrate);
- stat_inc_seg_count(sbi, type, gc_type);
+ stat_inc_gc_seg_count(sbi, data_type, gc_type);
sbi->gc_reclaimed_segs[sbi->gc_mode]++;
migrated++;
@@ -1783,12 +1784,12 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi,
}
if (submitted)
- f2fs_submit_merged_write(sbi,
- (type == SUM_TYPE_NODE) ? NODE : DATA);
+ f2fs_submit_merged_write(sbi, data_type);
blk_finish_plug(&plug);
- stat_inc_call_count(sbi->stat_info);
+ if (migrated)
+ stat_inc_gc_sec_count(sbi, data_type, gc_type);
return seg_freed;
}
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 1f0a25011687..b7971bdc39e1 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -435,6 +435,7 @@ void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need)
.err_gc_skipped = false,
.nr_free_secs = 1 };
f2fs_down_write(&sbi->gc_lock);
+ stat_inc_gc_call_count(sbi, FOREGROUND);
f2fs_gc(sbi, &gc_control);
}
}
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 30883beb750a..9446a4c1fd53 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -2206,6 +2206,7 @@ static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
.nr_free_secs = 1 };
f2fs_down_write(&sbi->gc_lock);
+ stat_inc_gc_call_count(sbi, FOREGROUND);
err = f2fs_gc(sbi, &gc_control);
if (err == -ENODATA) {
err = 0;
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 48b7e0073884..95a301581b91 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -974,8 +974,8 @@ F2FS_SBI_GENERAL_RO_ATTR(unusable_blocks_per_sec);
#ifdef CONFIG_F2FS_STAT_FS
STAT_INFO_RO_ATTR(cp_foreground_calls, cp_count);
STAT_INFO_RO_ATTR(cp_background_calls, bg_cp_count);
-STAT_INFO_RO_ATTR(gc_foreground_calls, call_count);
-STAT_INFO_RO_ATTR(gc_background_calls, bg_gc);
+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 */
--
2.40.1
cp_foreground_calls sysfs entry shows total CP call count rather than
foreground CP call count, fix it.
Fixes: fc7100ea2a52 ("f2fs: Add f2fs stats to sysfs")
Signed-off-by: Chao Yu <[email protected]>
---
fs/f2fs/checkpoint.c | 2 +-
fs/f2fs/debug.c | 9 ++++++++-
fs/f2fs/f2fs.h | 25 ++++++++++++++-----------
fs/f2fs/gc.c | 5 +++++
fs/f2fs/recovery.c | 1 +
fs/f2fs/segment.c | 3 ++-
fs/f2fs/super.c | 8 +++++++-
fs/f2fs/sysfs.c | 14 ++++++++++++--
8 files changed, 50 insertions(+), 17 deletions(-)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 8fd3b7f9fb88..b0597a539fc5 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -1701,9 +1701,9 @@ int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
}
f2fs_restore_inmem_curseg(sbi);
+ stat_inc_cp_count(sbi);
stop:
unblock_operations(sbi);
- stat_inc_cp_count(sbi->stat_info);
if (cpc->reason & CP_RECOVERY)
f2fs_notice(sbi, "checkpoint: version = %llx", ckpt_ver);
diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index c7cf453dce83..fdbf994f1271 100644
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -215,6 +215,9 @@ static void update_general_status(struct f2fs_sb_info *sbi)
si->valid_blks[type] += blks;
}
+ for (i = 0; i < MAX_CALL_TYPE; i++)
+ si->cp_call_count[i] = atomic_read(&sbi->cp_call_count[i]);
+
for (i = 0; i < 2; i++) {
si->segment_count[i] = sbi->segment_count[i];
si->block_count[i] = sbi->block_count[i];
@@ -497,7 +500,9 @@ static int stat_show(struct seq_file *s, void *v)
seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n",
si->prefree_count, si->free_segs, si->free_secs);
seq_printf(s, "CP calls: %d (BG: %d)\n",
- si->cp_count, si->bg_cp_count);
+ si->cp_call_count[TOTAL_CALL],
+ si->cp_call_count[BACKGROUND]);
+ seq_printf(s, "CP count: %d\n", si->cp_count);
seq_printf(s, " - cp blocks : %u\n", si->meta_count[META_CP]);
seq_printf(s, " - sit blocks : %u\n",
si->meta_count[META_SIT]);
@@ -699,6 +704,8 @@ int f2fs_build_stats(struct f2fs_sb_info *sbi)
atomic_set(&sbi->inplace_count, 0);
for (i = META_CP; i < META_MAX; i++)
atomic_set(&sbi->meta_count[i], 0);
+ for (i = 0; i < MAX_CALL_TYPE; i++)
+ atomic_set(&sbi->cp_call_count[i], 0);
atomic_set(&sbi->max_aw_cnt, 0);
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 9c99c608787a..2afc90e2152a 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1383,6 +1383,13 @@ enum errors_option {
MOUNT_ERRORS_PANIC, /* panic on errors */
};
+enum {
+ BACKGROUND,
+ FOREGROUND,
+ MAX_CALL_TYPE,
+ TOTAL_CALL = FOREGROUND,
+};
+
static inline int f2fs_test_bit(unsigned int nr, char *addr);
static inline void f2fs_set_bit(unsigned int nr, char *addr);
static inline void f2fs_clear_bit(unsigned int nr, char *addr);
@@ -1695,6 +1702,7 @@ struct f2fs_sb_info {
unsigned int io_skip_bggc; /* skip background gc for in-flight IO */
unsigned int other_skip_bggc; /* skip background gc for other reasons */
unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
+ atomic_t cp_call_count[MAX_CALL_TYPE]; /* # of cp call */
#endif
spinlock_t stat_lock; /* lock for stat operations */
@@ -3860,12 +3868,6 @@ void f2fs_destroy_recovery_cache(void);
/*
* debug.c
*/
-enum {
- BACKGROUND,
- FOREGROUND,
- MAX_CALL_TYPE
-};
-
#ifdef CONFIG_F2FS_STAT_FS
struct f2fs_stat_info {
struct list_head stat_list;
@@ -3912,7 +3914,7 @@ struct f2fs_stat_info {
int dirty_count, node_pages, meta_pages, compress_pages;
int compress_page_hit;
int prefree_count, free_segs, free_secs;
- int cp_count, bg_cp_count;
+ int cp_call_count[MAX_CALL_TYPE], cp_count;
int gc_call_count[MAX_CALL_TYPE];
int gc_segs[2][2];
int gc_secs[2][2];
@@ -3937,8 +3939,9 @@ static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
return (struct f2fs_stat_info *)sbi->stat_info;
}
-#define stat_inc_cp_count(si) ((si)->cp_count++)
-#define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
+#define stat_inc_cp_call_count(sbi, foreground) \
+ atomic_inc(&sbi->cp_call_count[(foreground)])
+#define stat_inc_cp_count(si) (F2FS_STAT(sbi)->cp_count++)
#define stat_io_skip_bggc_count(sbi) ((sbi)->io_skip_bggc++)
#define stat_other_skip_bggc_count(sbi) ((sbi)->other_skip_bggc++)
#define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
@@ -4055,8 +4058,8 @@ void __init f2fs_create_root_stats(void);
void f2fs_destroy_root_stats(void);
void f2fs_update_sit_info(struct f2fs_sb_info *sbi);
#else
-#define stat_inc_cp_count(si) do { } while (0)
-#define stat_inc_bg_cp_count(si) do { } while (0)
+#define stat_inc_cp_call_count(sbi, foreground) do { } while (0)
+#define stat_inc_cp_count(sbi) do { } while (0)
#define stat_io_skip_bggc_count(sbi) do { } while (0)
#define stat_other_skip_bggc_count(sbi) do { } while (0)
#define stat_inc_dirty_inode(sbi, type) do { } while (0)
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 68c3250fb3d2..6690323fff83 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -1840,6 +1840,7 @@ int f2fs_gc(struct f2fs_sb_info *sbi, struct f2fs_gc_control *gc_control)
* secure free segments which doesn't need fggc any more.
*/
if (prefree_segments(sbi)) {
+ stat_inc_cp_call_count(sbi, TOTAL_CALL);
ret = f2fs_write_checkpoint(sbi, &cpc);
if (ret)
goto stop;
@@ -1888,6 +1889,7 @@ int f2fs_gc(struct f2fs_sb_info *sbi, struct f2fs_gc_control *gc_control)
round++;
if (skipped_round > MAX_SKIP_GC_COUNT &&
skipped_round * 2 >= round) {
+ stat_inc_cp_call_count(sbi, TOTAL_CALL);
ret = f2fs_write_checkpoint(sbi, &cpc);
goto stop;
}
@@ -1903,6 +1905,7 @@ int f2fs_gc(struct f2fs_sb_info *sbi, struct f2fs_gc_control *gc_control)
*/
if (free_sections(sbi) <= upper_secs + NR_GC_CHECKPOINT_SECS &&
prefree_segments(sbi)) {
+ stat_inc_cp_call_count(sbi, TOTAL_CALL);
ret = f2fs_write_checkpoint(sbi, &cpc);
if (ret)
goto stop;
@@ -2030,6 +2033,7 @@ static int free_segment_range(struct f2fs_sb_info *sbi,
if (gc_only)
goto out;
+ stat_inc_cp_call_count(sbi, TOTAL_CALL);
err = f2fs_write_checkpoint(sbi, &cpc);
if (err)
goto out;
@@ -2222,6 +2226,7 @@ int f2fs_resize_fs(struct file *filp, __u64 block_count)
clear_sbi_flag(sbi, SBI_IS_RESIZEFS);
set_sbi_flag(sbi, SBI_IS_DIRTY);
+ stat_inc_cp_call_count(sbi, TOTAL_CALL);
err = f2fs_write_checkpoint(sbi, &cpc);
if (err) {
update_fs_metadata(sbi, secs);
diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
index 4e7d4ceeb084..e91f4619aa5b 100644
--- a/fs/f2fs/recovery.c
+++ b/fs/f2fs/recovery.c
@@ -924,6 +924,7 @@ int f2fs_recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only)
struct cp_control cpc = {
.reason = CP_RECOVERY,
};
+ stat_inc_cp_call_count(sbi, TOTAL_CALL);
err = f2fs_write_checkpoint(sbi, &cpc);
}
}
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index b7971bdc39e1..ad609c7c75f6 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -513,8 +513,8 @@ void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi, bool from_bg)
mutex_unlock(&sbi->flush_lock);
}
+ stat_inc_cp_call_count(sbi, BACKGROUND);
f2fs_sync_fs(sbi->sb, 1);
- stat_inc_bg_cp_count(sbi->stat_info);
}
static int __submit_flush_wait(struct f2fs_sb_info *sbi,
@@ -3231,6 +3231,7 @@ int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range)
goto out;
f2fs_down_write(&sbi->gc_lock);
+ stat_inc_cp_call_count(sbi, TOTAL_CALL);
err = f2fs_write_checkpoint(sbi, &cpc);
f2fs_up_write(&sbi->gc_lock);
if (err)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 9446a4c1fd53..7f0cb2fa0fc8 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1601,6 +1601,7 @@ static void f2fs_put_super(struct super_block *sb)
struct cp_control cpc = {
.reason = CP_UMOUNT,
};
+ stat_inc_cp_call_count(sbi, TOTAL_CALL);
err = f2fs_write_checkpoint(sbi, &cpc);
}
@@ -1610,6 +1611,7 @@ static void f2fs_put_super(struct super_block *sb)
struct cp_control cpc = {
.reason = CP_UMOUNT | CP_TRIMMED,
};
+ stat_inc_cp_call_count(sbi, TOTAL_CALL);
err = f2fs_write_checkpoint(sbi, &cpc);
}
@@ -1706,8 +1708,10 @@ int f2fs_sync_fs(struct super_block *sb, int sync)
if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
return -EAGAIN;
- if (sync)
+ if (sync) {
+ stat_inc_cp_call_count(sbi, TOTAL_CALL);
err = f2fs_issue_checkpoint(sbi);
+ }
return err;
}
@@ -2232,6 +2236,7 @@ static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
f2fs_down_write(&sbi->gc_lock);
cpc.reason = CP_PAUSE;
set_sbi_flag(sbi, SBI_CP_DISABLED);
+ stat_inc_cp_call_count(sbi, TOTAL_CALL);
err = f2fs_write_checkpoint(sbi, &cpc);
if (err)
goto out_unlock;
@@ -4868,6 +4873,7 @@ static void kill_f2fs_super(struct super_block *sb)
struct cp_control cpc = {
.reason = CP_UMOUNT,
};
+ stat_inc_cp_call_count(sbi, TOTAL_CALL);
f2fs_write_checkpoint(sbi, &cpc);
}
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 95a301581b91..417fae96890f 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -356,6 +356,16 @@ static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
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);
@@ -972,8 +982,8 @@ F2FS_SBI_GENERAL_RO_ATTR(unusable_blocks_per_sec);
/* STAT_INFO ATTR */
#ifdef CONFIG_F2FS_STAT_FS
-STAT_INFO_RO_ATTR(cp_foreground_calls, cp_count);
-STAT_INFO_RO_ATTR(cp_background_calls, bg_cp_count);
+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
--
2.40.1
Hello:
This series was applied to jaegeuk/f2fs.git (dev)
by Jaegeuk Kim <[email protected]>:
On Tue, 8 Aug 2023 08:59:48 +0800 you wrote:
> As reported, status debugfs entry shows inconsistent GC stats as below:
>
> GC calls: 6008 (BG: 6161)
> - data segments : 3053 (BG: 3053)
> - node segments : 2955 (BG: 2955)
>
> Total GC calls is larger than BGGC calls, the reason is:
> - f2fs_stat_info.call_count accounts total migrated section count
> by f2fs_gc()
> - f2fs_stat_info.bg_gc accounts total call times of f2fs_gc() from
> background gc_thread
>
> [...]
Here is the summary with links:
- [f2fs-dev,1/2] f2fs: fix to account gc stats correctly
https://git.kernel.org/jaegeuk/f2fs/c/9bf1dcbdfdc8
- [f2fs-dev,2/2] f2fs: fix to account cp stats correctly
https://git.kernel.org/jaegeuk/f2fs/c/eb61c2cca2eb
You are awesome, thank you!
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