Commit 8a160cb4 authored May 19, 2017 by Chao Yu Committed by Jaegeuk Kim Jul 31, 2017

f2fs: wake up all waiters in f2fs_submit_discard_endio



commit e31b98215779e66a490471c6ad886ae231316699 upstream.

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

parent 7839d430

fs/f2fs/segment.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -752,7 +752,7 @@ static void f2fs_submit_discard_endio(struct bio *bio, int err)

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