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authorHannes Reinecke <hare@suse.de>2015-11-26 08:46:57 +0100
committerJens Axboe <axboe@fb.com>2015-11-29 22:37:27 +0100
commitbf4e6b4e757488dee1b6a581f49c7ac34cd217f8 (patch)
tree95e32c168d7478d0f541b5d19d1edf0e3d1160f1 /CREDITS
parentlightnvm: missing nvm_lock acquire (diff)
downloadlinux-bf4e6b4e757488dee1b6a581f49c7ac34cd217f8.tar.xz
linux-bf4e6b4e757488dee1b6a581f49c7ac34cd217f8.zip
block: Always check queue limits for cloned requests
When a cloned request is retried on other queues it always needs to be checked against the queue limits of that queue. Otherwise the calculations for nr_phys_segments might be wrong, leading to a crash in scsi_init_sgtable(). To clarify this the patch renames blk_rq_check_limits() to blk_cloned_rq_check_limits() and removes the symbol export, as the new function should only be used for cloned requests and never exported. Cc: Mike Snitzer <snitzer@redhat.com> Cc: Ewan Milne <emilne@redhat.com> Cc: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Hannes Reinecke <hare@suse.de> Fixes: e2a60da74 ("block: Clean up special command handling logic") Cc: stable@vger.kernel.org # 3.7+ Acked-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
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