block: Create bip slabs with embedded integrity vectors

This patch restores stacking ability to the block layer integrity
infrastructure by creating a set of dedicated bip slabs.  Each bip slab
has an embedded bio_vec array at the end.  This cuts down on memory
allocations and also simplifies the code compared to the original bvec
version.  Only the largest bip slab is backed by a mempool.  The pool is
contained in the bio_set so stacking drivers can ensure forward
progress.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@carl.(none)>

1 files changed, 1 insertions, 1 deletions

diff --git a/block/blk-core.c b/block/blk-core.c
index b06cf5c2a829..345d99da8d41 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -2365,7 +2365,7 @@ int blk_rq_prep_clone(struct request *rq, struct request *rq_src,
                 __bio_clone(bio, bio_src);
 
                 if (bio_integrity(bio_src) &&
-                    bio_integrity_clone(bio, bio_src, gfp_mask))
+                    bio_integrity_clone(bio, bio_src, gfp_mask, bs))
                         goto free_and_out;
 
                 if (bio_ctr && bio_ctr(bio, bio_src, data))