4.12-stable review patch. If anyone has any objections, please let me know.
------------------ From: Chao Yu <[email protected]> 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") Signed-off-by: Chao Yu <[email protected]> Signed-off-by: Jaegeuk Kim <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- fs/f2fs/segment.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -751,7 +751,7 @@ static void f2fs_submit_discard_endio(st dc->error = bio->bi_error; dc->state = D_DONE; - complete(&dc->wait); + complete_all(&dc->wait); bio_put(bio); }
