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authorMartin K. Petersen <martin.petersen@oracle.com>2010-09-10 22:50:10 +0400
committerJens Axboe <axboe@carl.home.kernel.dk>2010-09-10 22:50:10 +0400
commit13f05c8d8e98bbdce89158bfdb2e380940695a88 (patch)
tree055215e7e2b1bdc684ead64daa61b30b35eaa3c5 /block/blk.h
parentc8bf1336824ebd698d37b71763e1c43190f2229a (diff)
downloadlinux-13f05c8d8e98bbdce89158bfdb2e380940695a88.tar.xz
block/scsi: Provide a limit on the number of integrity segments
Some controllers have a hardware limit on the number of protection information scatter-gather list segments they can handle. Introduce a max_integrity_segments limit in the block layer and provide a new scsi_host_template setting that allows HBA drivers to provide a value suitable for the hardware. Add support for honoring the integrity segment limit when merging both bios and requests. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <axboe@carl.home.kernel.dk>
Diffstat (limited to 'block/blk.h')
-rw-r--r--block/blk.h8
1 files changed, 0 insertions, 8 deletions
diff --git a/block/blk.h b/block/blk.h
index 6e7dc87141e4..6738831ba447 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -132,14 +132,6 @@ static inline int queue_congestion_off_threshold(struct request_queue *q)
return q->nr_congestion_off;
}
-#if defined(CONFIG_BLK_DEV_INTEGRITY)
-
-#define rq_for_each_integrity_segment(bvl, _rq, _iter) \
- __rq_for_each_bio(_iter.bio, _rq) \
- bip_for_each_vec(bvl, _iter.bio->bi_integrity, _iter.i)
-
-#endif /* BLK_DEV_INTEGRITY */
-
static inline int blk_cpu_to_group(int cpu)
{
#ifdef CONFIG_SCHED_MC