block: use bi_max_vecs to find the bvec pool
Instead of encoding of the bvec pool using magic bio flags, just use
a helper to find the pool based on the max_vecs value.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/block/blk.h b/block/blk.h
index e022a0d..bfc4d52 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -56,9 +56,9 @@ void blk_free_flush_queue(struct blk_flush_queue *q);
void blk_freeze_queue(struct request_queue *q);
#define BIO_INLINE_VECS 4
-struct bio_vec *bvec_alloc(gfp_t, int, unsigned long *, mempool_t *);
-void bvec_free(mempool_t *, struct bio_vec *, unsigned int);
-unsigned int bvec_nr_vecs(unsigned short idx);
+struct bio_vec *bvec_alloc(mempool_t *pool, unsigned short *nr_vecs,
+ gfp_t gfp_mask);
+void bvec_free(mempool_t *pool, struct bio_vec *bv, unsigned short nr_vecs);
static inline bool biovec_phys_mergeable(struct request_queue *q,
struct bio_vec *vec1, struct bio_vec *vec2)