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| author | Martin K. Petersen <martin.petersen@oracle.com> | 2014-09-27 03:19:56 +0400 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-09-27 19:14:46 +0400 |
| commit | 180b2f95dd331010a9930a65c8a18d6d81b94dc1 (patch) | |
| tree | 8ceb4a28e15e1e588b52022a844f81daabd0f92d /include/linux/blkdev.h | |
| parent | e7258c1a269e0967856c81d182c286a78f5ecf15 (diff) | |
| download | linux-180b2f95dd331010a9930a65c8a18d6d81b94dc1.tar.xz | |
block: Replace bi_integrity with bi_special
For commands like REQ_COPY we need a way to pass extra information along
with each bio. Like integrity metadata this information must be
available at the bottom of the stack so bi_private does not suffice.
Rename the existing bi_integrity field to bi_special and make it a union
so we can have different bio extensions for each class of command.
We previously used bi_integrity != NULL as a way to identify whether a
bio had integrity metadata or not. Introduce a REQ_INTEGRITY to be the
indicator now that bi_special can contain different things.
In addition, bio_integrity(bio) will now return a pointer to the
integrity payload (when applicable).
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 49f3461e4272..7fcb2caef559 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1514,12 +1514,9 @@ static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk) return disk->integrity; } -static inline int blk_integrity_rq(struct request *rq) +static inline bool blk_integrity_rq(struct request *rq) { - if (rq->bio == NULL) - return 0; - - return bio_integrity(rq->bio); + return rq->cmd_flags & REQ_INTEGRITY; } static inline void blk_queue_max_integrity_segments(struct request_queue *q, |