Messages in this thread Patch in this message | | | From | Jaegeuk Kim <> | Subject | [PATCH 4/7] f2fs: don't wake up too frequently, if there is lots of IOs | Date | Tue, 29 Jan 2019 07:47:14 +0800 |
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Otherwise, it wakes up discard thread which will sleep again by busy IOs in a loop.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> --- fs/f2fs/segment.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h index a77f76f528b6..5c7ed0442d6e 100644 --- a/fs/f2fs/segment.h +++ b/fs/f2fs/segment.h @@ -865,7 +865,7 @@ static inline void wake_up_discard_thread(struct f2fs_sb_info *sbi, bool force) } } mutex_unlock(&dcc->cmd_lock); - if (!wakeup) + if (!wakeup || !is_idle(sbi, DISCARD_TIME)) return; wake_up: dcc->discard_wake = 1; -- 2.19.0.605.g01d371f741-goog
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