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authorMike Snitzer <snitzer@redhat.com>2014-05-13 13:49:39 -0400
committerMike Snitzer <snitzer@redhat.com>2014-05-14 16:12:17 -0400
commit4cdd2ad78098244c1bc9ec4374ea1c225fd1cd6f (patch)
tree9892d1a825e80cd6299ec49e3279166124a551f9 /Documentation/device-mapper
parent85ad643b7e7e52d37620fb272a9fd577a8095647 (diff)
dm mpath: fix lock order inconsistency in multipath_ioctl
Commit 3e9f1be1b40 ("dm mpath: remove process_queued_ios()") did not consistently take the multipath device's spinlock (m->lock) before calling dm_table_run_md_queue_async() -- which takes the q->queue_lock. Found with code inspection using hint from reported lockdep warning. Reported-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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