From: Martin K. Petersen <martin.petersen@oracle.com>
Date: Tue, 18 Sep 2012 16:19:26 +0000 (-0400)
Subject: block: Consolidate command flag and queue limit checks for merges
X-Git-Tag: v3.7-rc1~54^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f31dc1cd490539e2b62a126bc4dc2495b165d772;p=pandora-kernel.git

block: Consolidate command flag and queue limit checks for merges

 - blk_check_merge_flags() verifies that cmd_flags / bi_rw are
   compatible. This function is called for both req-req and req-bio
   merging.

 - blk_rq_get_max_sectors() and blk_queue_get_max_sectors() can be used
   to query the maximum sector count for a given request or queue. The
   calls will return the right value from the queue limits given the
   type of command (RW, discard, write same, etc.)

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

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