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authorMartin K. Petersen <martin.petersen@oracle.com>2012-09-18 12:19:26 -0400
committerJens Axboe <axboe@kernel.dk>2012-09-20 14:31:41 +0200
commitf31dc1cd490539e2b62a126bc4dc2495b165d772 (patch)
treee8a917161111266f72a7aea539c9562dc2f2653d /block/blk-lib.c
parente2a60da74fc8215c68509a89e9a69c66363153db (diff)
downloadlinux-linaro-stable-f31dc1cd490539e2b62a126bc4dc2495b165d772.tar.gz
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>
Diffstat (limited to 'block/blk-lib.c')
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