block: move bio_alloc_pages() to bcache
bcache is the only user of bio_alloc_pages(), so move this function into
bcache, and avoid it being misused in the future.
Also rename it to bch_bio_allo_pages() since it is bcache only.
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 643c3021..c493fb9 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -841,7 +841,7 @@ static int cached_dev_cache_miss(struct btree *b, struct search *s,
cache_bio->bi_private = &s->cl;
bch_bio_map(cache_bio, NULL);
- if (bio_alloc_pages(cache_bio, __GFP_NOWARN|GFP_NOIO))
+ if (bch_bio_alloc_pages(cache_bio, __GFP_NOWARN|GFP_NOIO))
goto out_put;
if (reada)