* [PATCH] f2fs: use wq_has_sleeper for cp_wait wait_queue
@ 2016-01-26 20:01 Jaegeuk Kim
0 siblings, 0 replies; only message in thread
From: Jaegeuk Kim @ 2016-01-26 20:01 UTC (permalink / raw)
To: linux-kernel, linux-fsdevel, linux-f2fs-devel; +Cc: Jaegeuk Kim
We need to use wq_has_sleeper including smp_mb to consider cp_wait concurrency.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
fs/f2fs/data.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index d0675e5..df4d4cc 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -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);
--
2.6.3
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2016-01-26 20:01 [PATCH] f2fs: use wq_has_sleeper for cp_wait wait_queue Jaegeuk Kim
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