block: don't allocate a payload for discard request

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / blkdev.h

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 3fc0f5908619e0b3fc878bbcec4b352faf1fbca7..204fbe22354d9f32705a7c6ec0f819251c16657b 100644 (file)
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -705,6 +705,8 @@ extern struct request *blk_make_request(struct request_queue *, struct bio *,
                                        gfp_t);
 extern void blk_insert_request(struct request_queue *, struct request *, int, void *);
 extern void blk_requeue_request(struct request_queue *, struct request *);
+extern void blk_add_request_payload(struct request *rq, struct page *page,
+               unsigned int len);
 extern int blk_rq_check_limits(struct request_queue *q, struct request *rq);
 extern int blk_lld_busy(struct request_queue *q);
 extern int blk_rq_prep_clone(struct request *rq, struct request *rq_src,