Commit 438b4060 authored by Jens Axboe's avatar Jens Axboe Committed by Jakub Kicinski
Browse files

tun: flag the device as supporting FMODE_NOWAIT 



tun already checks for both O_NONBLOCK and IOCB_NOWAIT in its read
and write iter handlers, so it's fully ready for FMODE_NOWAIT. But
for some reason it doesn't set it. Rectify that oversight.

Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
Link: https://lore.kernel.org/r/3f7dc1f0-79ca-d85c-4d16-8c12c5bd492d@kernel.dk


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent ae913318

drivers/net/tun.c

+2 −0
Original line number Diff line number Diff line
@@ -3463,6 +3463,8 @@ static int tun_chr_open(struct inode *inode, struct file * file) 


	sock_set_flag(&tfile->sk, SOCK_ZEROCOPY);



	/* tun groks IOCB_NOWAIT just fine, mark it as such */

	file->f_mode |= FMODE_NOWAIT;

	return 0;

}