f2fs: don't wake up too frequently, if there is lots of IOs



Otherwise, it wakes up discard thread which will sleep again by busy IOs
in a loop.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

parent 78a402a2

fs/f2fs/segment.h

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -865,7 +865,7 @@ static inline void wake_up_discard_thread(struct f2fs_sb_info *sbi, bool force)
	}		}
	}		}
	mutex_unlock(&dcc->cmd_lock);		mutex_unlock(&dcc->cmd_lock);
	if (!wakeup)		if (!wakeup \|\| !is_idle(sbi, DISCARD_TIME))
	return;		return;
	wake_up:		wake_up:
	dcc->discard_wake = 1;		dcc->discard_wake = 1;