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Subject[PATCH 2/3] f2fs: wake up all waiters in f2fs_submit_discard_endio
Date
From: Chao Yu <yuchao0@huawei.com>

There could be more than one waiter waiting discard IO completion, so we
need use complete_all() instead of complete() in f2fs_submit_discard_endio
to avoid hungtask.

Fixes: ec9895add2c5 ("f2fs: don't hold cmd_lock during waiting discard
command")
Cc: <stable@vger.kernel.org>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
---
fs/f2fs/segment.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index d310b82caef1..2b11119d9071 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -751,7 +751,7 @@ static void f2fs_submit_discard_endio(struct bio *bio)

dc->error = bio->bi_error;
dc->state = D_DONE;
- complete(&dc->wait);
+ complete_all(&dc->wait);
bio_put(bio);
}

--
2.12.2.575.gb14f27f
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