diff options
| author | Martin K. Petersen <martin.petersen@oracle.com> | 2012-09-18 12:19:25 -0400 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2012-09-20 14:31:38 +0200 |
| commit | e2a60da74fc8215c68509a89e9a69c66363153db (patch) | |
| tree | c23dd6540dc211e2b2583c3e950a7f6977e3f1df /include/linux/blk_types.h | |
| parent | d41570b7469724005eb78448a69289900f911963 (diff) | |
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 'include/linux/blk_types.h')
| -rw-r--r-- | include/linux/blk_types.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 3eefbb29119..1b229664f57 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -194,6 +194,10 @@ enum rq_flag_bits { REQ_DISCARD | REQ_NOIDLE | REQ_FLUSH | REQ_FUA | REQ_SECURE) #define REQ_CLONE_MASK REQ_COMMON_MASK +/* This mask is used for both bio and request merge checking */ +#define REQ_NOMERGE_FLAGS \ + (REQ_NOMERGE | REQ_STARTED | REQ_SOFTBARRIER | REQ_FLUSH | REQ_FUA) + #define REQ_RAHEAD (1 << __REQ_RAHEAD) #define REQ_THROTTLED (1 << __REQ_THROTTLED) |