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authorJan Kara <jack@suse.cz>2017-03-08 17:48:34 +0100
committerJens Axboe <axboe@fb.com>2017-03-08 10:55:17 -0700
commitc01228db4ba965986511a5b28c478bddd7e2726e (patch)
tree41fe10418d432b17e93898ed9f84b8aebc78c7ad /block/blk-core.c
parent90f16fddcc2802726142b8386c65ccb89f044613 (diff)
Revert "scsi, block: fix duplicate bdi name registration crashes"
This reverts commit 0dba1314d4f81115dce711292ec7981d17231064. It causes leaking of device numbers for SCSI when SCSI registers multiple gendisks for one request_queue in succession. It can be easily reproduced using Omar's script [1] on kernel with CONFIG_DEBUG_TEST_DRIVER_REMOVE. Furthermore the protection provided by this commit is not needed anymore as the problem it was fixing got also fixed by commit 165a5e22fafb "block: Move bdi_unregister() to del_gendisk()". [1]: http://marc.info/?l=linux-block&m=148554717109098&w=2 Signed-off-by: Jan Kara <jack@suse.cz> Acked-by: Dan Williams <dan.j.williams@intel.com> Tested-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-core.c')
-rw-r--r--block/blk-core.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index 1086dac8724c..a76895c9776d 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -578,8 +578,6 @@ void blk_cleanup_queue(struct request_queue *q)
q->queue_lock = &q->__queue_lock;
spin_unlock_irq(lock);
- put_disk_devt(q->disk_devt);
-
/* @q is and will stay empty, shutdown and put */
blk_put_queue(q);
}