tree bff5e1a47b6e64e45df0428925cc6db8542cad62
parent 6118b70b3a0b4c583439bb77600194c82f220ce3
author Martin K. Petersen <martin.petersen@oracle.com> 1246023469 +0200
committer Jens Axboe <jens.axboe@oracle.com> 1246438585 +0200

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)>