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authorMartin K. Petersen <martin.petersen@oracle.com>2012-09-18 12:19:25 -0400
committerJens Axboe <axboe@kernel.dk>2012-09-20 14:31:38 +0200
commite2a60da74fc8215c68509a89e9a69c66363153db (patch)
treec23dd6540dc211e2b2583c3e950a7f6977e3f1df /block/blk.h
parentd41570b7469724005eb78448a69289900f911963 (diff)
downloadop-kernel-dev-e2a60da74fc8215c68509a89e9a69c66363153db.zip
op-kernel-dev-e2a60da74fc8215c68509a89e9a69c66363153db.tar.gz
block: Clean up special command handling logic
Remove special-casing of non-rw fs style requests (discard). The nomerge flags are consolidated in blk_types.h, and rq_mergeable() and bio_mergeable() have been modified to use them. bio_is_rw() is used in place of bio_has_data() a few places. This is done to to distinguish true reads and writes from other fs type requests that carry a payload (e.g. write same). 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.h')
-rw-r--r--block/blk.h5
1 files changed, 2 insertions, 3 deletions
diff --git a/block/blk.h b/block/blk.h
index 2a0ea32..ca51543 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -171,14 +171,13 @@ static inline int queue_congestion_off_threshold(struct request_queue *q)
*
* a) it's attached to a gendisk, and
* b) the queue had IO stats enabled when this request was started, and
- * c) it's a file system request or a discard request
+ * c) it's a file system request
*/
static inline int blk_do_io_stat(struct request *rq)
{
return rq->rq_disk &&
(rq->cmd_flags & REQ_IO_STAT) &&
- (rq->cmd_type == REQ_TYPE_FS ||
- (rq->cmd_flags & REQ_DISCARD));
+ (rq->cmd_type == REQ_TYPE_FS);
}
/*
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