tree e8a917161111266f72a7aea539c9562dc2f2653d
parent e2a60da74fc8215c68509a89e9a69c66363153db
author Martin K. Petersen <martin.petersen@oracle.com> 1347985166 -0400
committer Jens Axboe <axboe@kernel.dk> 1348144301 +0200

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>