f2fs: use wq_has_sleeper for cp_wait wait_queue



We need to use wq_has_sleeper including smp_mb to consider cp_wait concurrency.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

parent 688159b6

fs/f2fs/data.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -74,8 +74,7 @@ static void f2fs_write_end_io(struct bio *bio)
		dec_page_count(sbi, F2FS_WRITEBACK);
		}

		if (!get_pages(sbi, F2FS_WRITEBACK) &&
		!list_empty(&sbi->cp_wait.task_list))
		if (!get_pages(sbi, F2FS_WRITEBACK) && wq_has_sleeper(&sbi->cp_wait))
		wake_up(&sbi->cp_wait);

		bio_put(bio);