diff options
| author | Hannes Reinecke <hare@suse.de> | 2015-11-26 10:46:57 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-02-20 01:28:22 +0300 |
| commit | f6d45a66d0c5a4c5747df0b8a6eebaaa1126b56e (patch) | |
| tree | ae8f0305d14b809a26027c6cd989dec6c8f48fc5 /include | |
| parent | f7b03cd741dc1f87936b58e841a2555c6a7deb00 (diff) | |
| download | linux-f6d45a66d0c5a4c5747df0b8a6eebaaa1126b56e.tar.xz | |
block: Always check queue limits for cloned requests
commit bf4e6b4e757488dee1b6a581f49c7ac34cd217f8 upstream.
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")
Acked-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/blkdev.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 19c2e947d4d1..3a3ff074782f 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -767,7 +767,6 @@ extern void blk_rq_set_block_pc(struct request *); extern void blk_requeue_request(struct request_queue *, struct request *); extern void blk_add_request_payload(struct request *rq, struct page *page, unsigned int len); -extern int blk_rq_check_limits(struct request_queue *q, struct request *rq); extern int blk_lld_busy(struct request_queue *q); extern int blk_rq_prep_clone(struct request *rq, struct request *rq_src, struct bio_set *bs, gfp_t gfp_mask, |