Re: [PATCH 01/11] block: Fix bdi assignment to bdev inode when racing with disk delete
From: Hannes Reinecke <hare@suse.de>
Date: 2017-03-07 06:47:14
On 03/06/2017 05:33 PM, Jan Kara wrote:
When disk->fops->open() in __blkdev_get() returns -ERESTARTSYS, we restart the process of opening the block device. However we forget to switch bdev->bd_bdi back to noop_backing_dev_info and as a result bdev inode will be pointing to a stale bdi. Fix the problem by setting bdev->bd_bdi later when __blkdev_get() is already guaranteed to succeed. Signed-off-by: Jan Kara <jack@suse.cz> --- fs/block_dev.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)
Reviewed-by: Hannes Reinecke <hare@suse.com> Cheers, Hannes -- Dr. Hannes Reinecke Teamlead Storage & Networking hare@suse.de +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 N�rnberg GF: F. Imend�rffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton HRB 21284 (AG N�rnberg)