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authorMartin K. Petersen <martin.petersen@oracle.com>2014-09-26 19:20:06 -0400
committerJens Axboe <axboe@fb.com>2014-09-27 09:14:57 -0600
commit4eaf99beadcefbf126fa05e66fb40fca999e09fd (patch)
treee91203868eb48cdf06dd575e7d3f3569d6b6bfc9 /include/linux/blkdev.h
parentaae7df50190a640e51bfe11c93f94741ac82ff0b (diff)
block: Don't merge requests if integrity flags differ
We'd occasionally merge requests with conflicting integrity flags. Introduce a merge helper which checks that the requests have compatible integrity payloads. 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.h20
1 files changed, 10 insertions, 10 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 773df190a4ee..038b40f84c7a 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1497,10 +1497,10 @@ extern int blk_integrity_compare(struct gendisk *, struct gendisk *);
extern int blk_rq_map_integrity_sg(struct request_queue *, struct bio *,
struct scatterlist *);
extern int blk_rq_count_integrity_sg(struct request_queue *, struct bio *);
-extern int blk_integrity_merge_rq(struct request_queue *, struct request *,
- struct request *);
-extern int blk_integrity_merge_bio(struct request_queue *, struct request *,
- struct bio *);
+extern bool blk_integrity_merge_rq(struct request_queue *, struct request *,
+ struct request *);
+extern bool blk_integrity_merge_bio(struct request_queue *, struct request *,
+ struct bio *);
static inline
struct blk_integrity *bdev_get_integrity(struct block_device *bdev)
@@ -1580,15 +1580,15 @@ static inline unsigned short queue_max_integrity_segments(struct request_queue *
{
return 0;
}
-static inline int blk_integrity_merge_rq(struct request_queue *rq,
- struct request *r1,
- struct request *r2)
+static inline bool blk_integrity_merge_rq(struct request_queue *rq,
+ struct request *r1,
+ struct request *r2)
{
return 0;
}
-static inline int blk_integrity_merge_bio(struct request_queue *rq,
- struct request *r,
- struct bio *b)
+static inline bool blk_integrity_merge_bio(struct request_queue *rq,
+ struct request *r,
+ struct bio *b)
{
return 0;
}