]> git.baikalelectronics.ru Git - kernel.git/commit
block: Make del_gendisk() safer for disks without queues
authorJan Kara <jack@suse.cz>
Wed, 8 Mar 2017 16:48:33 +0000 (17:48 +0100)
committerJens Axboe <axboe@fb.com>
Wed, 8 Mar 2017 17:55:17 +0000 (10:55 -0700)
commit9f56b23f6c2bc9061e2a356e02805966ccf0a418
treeda1c8d56ab62dd362dc94fab542ba43a5144f67d
parentd6703d0cb5ae8b05212c4158513c08a166dc6806
block: Make del_gendisk() safer for disks without queues

Commit 62e779c8065e "block: Move bdi_unregister() to del_gendisk()"
added disk->queue dereference to del_gendisk(). Although del_gendisk()
is not supposed to be called without disk->queue valid and
blk_unregister_queue() warns in that case, this change will make it oops
instead. Return to the old more robust behavior of just warning when
del_gendisk() gets called for gendisk with disk->queue being NULL.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Tested-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
block/genhd.c