aio: remove an outdated BUG_ON and comment in aio_complete

These days we don't treat sync iocbs special in the aio completion code as
they never use it.  Remove the old comment and BUG_ON given that the
current definition of is_sync_kiocb makes it impossible to hit.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>

1 files changed, 0 insertions, 9 deletions

diff --git a/fs/aio.c b/fs/aio.c
index add46b06be86..7c1855afd723 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1107,15 +1107,6 @@ static void aio_complete(struct kiocb *kiocb, long res, long res2)
                 file_end_write(file);
         }
 
-        /*
-         * Special case handling for sync iocbs:
-         *  - events go directly into the iocb for fast handling
-         *  - the sync task with the iocb in its stack holds the single iocb
-         *    ref, no other paths have a way to get another ref
-         *  - the sync task helpfully left a reference to itself in the iocb
-         */
-        BUG_ON(is_sync_kiocb(kiocb));
-
         if (iocb->ki_list.next) {
                 unsigned long flags;