f2fs: use wq_has_sleeper for cp_wait wait_queue

PATCH New Jaegeuk Kim 1 participant 1 message Jan 26, 2016

Subsystems (2)

VFS F2FS file system

lore

Share & tools

lore

Jaegeuk Kim

author maintainer

2016-01-26 20:01 UTC #0 lore raw

PATCH 1/1 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 <[email protected]>

---
 fs/f2fs/data.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

fs/f2fs/data.c +1 -2

index d0675e5..df4d4cc 100644
@@ -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);

Signature · 1 line

2.6.3