From 337bc770492d0e5002190c9f0a5bd2fa4c9ae101 Mon Sep 17 00:00:00 2001
From: Jens Axboe <axboe@kernel.dk>
Date: Fri, 22 May 2020 09:14:08 -0600
Subject: [PATCH 2085/2944] block: flag block devices as supporting IOCB_WAITQ

to #29998112

commit a304f0744824fd37d6e1aab4f9715f907724ad11 upstream

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Hao Xu <haoxu@linux.alibaba.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
---
 fs/block_dev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/block_dev.c b/fs/block_dev.c
index c615ffb..05d3f53 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1786,7 +1786,7 @@ static int blkdev_open(struct inode * inode, struct file * filp)
 	 */
 	filp->f_flags |= O_LARGEFILE;
 
-	filp->f_mode |= FMODE_NOWAIT;
+	filp->f_mode |= FMODE_NOWAIT | FMODE_BUF_RASYNC;
 
 	if (filp->f_flags & O_NDELAY)
 		filp->f_mode |= FMODE_NDELAY;
-- 
1.8.3.1