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| author |   Chao Yu <yuchao0@huawei.com> | 2018-09-29 18:31:28 +0800 |
|---|---|---|
| committer |   Jaegeuk Kim <jaegeuk@kernel.org> | 2018-09-30 18:33:34 -0700 |
| commit | 274bd9ba39425610fdb9a6827602197a5cd27cd8 (patch) | |
| tree | 9f0502bf4cbc4364a61a1553ec96c5bd0d767975 /fs/f2fs/gc.c | |
| parent | f2fs: add to account meta IO (diff) | |
| download | linux-dev-274bd9ba39425610fdb9a6827602197a5cd27cd8.tar.xz linux-dev-274bd9ba39425610fdb9a6827602197a5cd27cd8.zip | |
f2fs: add to account skip count of background GC
This patch adds to account skip count of background GC, and show stat
info via 'status' debugfs entry.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/gc.c')
| -rw-r--r-- | fs/f2fs/gc.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index f541aa3ff7d5..99ed8a5d9249 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -40,13 +40,16 @@ static int gc_thread_func(void *data) if (gc_th->gc_wake) gc_th->gc_wake = 0; - if (try_to_freeze()) + if (try_to_freeze()) { + stat_other_skip_bggc_count(sbi); continue; + } if (kthread_should_stop()) break; if (sbi->sb->s_writers.frozen >= SB_FREEZE_WRITE) { increase_sleep_time(gc_th, &wait_ms); + stat_other_skip_bggc_count(sbi); continue; } @@ -55,8 +58,10 @@ static int gc_thread_func(void *data) f2fs_stop_checkpoint(sbi, false); } - if (!sb_start_write_trylock(sbi->sb)) + if (!sb_start_write_trylock(sbi->sb)) { + stat_other_skip_bggc_count(sbi); continue; + } /* * [GC triggering condition] @@ -77,12 +82,15 @@ static int gc_thread_func(void *data) goto do_gc; } - if (!mutex_trylock(&sbi->gc_mutex)) + if (!mutex_trylock(&sbi->gc_mutex)) { + stat_other_skip_bggc_count(sbi); goto next; + } if (!is_idle(sbi, GC_TIME)) { increase_sleep_time(gc_th, &wait_ms); mutex_unlock(&sbi->gc_mutex); + stat_io_skip_bggc_count(sbi); goto next; } |