[PATCH 1/7] block: make bio_map_kern() non static

SelvaKumar S
2021-08-17T11:28:50Z

Make bio_map_kern() non static, so that copy offload/emulation can use
it to add vmalloced memory to bio.

Signed-off-by: SelvaKumar S <selvakuma.s1@samsung.com>
Signed-off-by: Nitesh Shetty <nj.shetty@samsung.com>
---
block/blk-map.c | 2 +-
include/linux/blkdev.h | 2 ++
2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/block/blk-map.c b/block/blk-map.c
index d1448aaad980..1b97b9b503f4 100644
--- a/block/blk-map.c
+++ b/block/blk-map.c
@@ -336,7 +336,7 @@ static void bio_map_kern_endio(struct bio *bio)
* Map the kernel address into a bio suitable for io to a block
* device. Returns an error pointer in case of error.
*/
-static struct bio *bio_map_kern(struct request_queue *q, void *data,
+struct bio *bio_map_kern(struct request_queue *q, void *data,
unsigned int len, gfp_t gfp_mask)
{
unsigned long kaddr = (unsigned long)data;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index df404c1fb087..28a193225cf2 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -903,6 +903,8 @@ extern int blk_rq_map_user(struct request_queue *, struct request *,
struct rq_map_data *, void __user *, unsigned long,
gfp_t);
extern int blk_rq_unmap_user(struct bio *);
+struct bio *bio_map_kern(struct request_queue *q, void *data, unsigned int len,
+ gfp_t gfp_mask);
extern int blk_rq_map_kern(struct request_queue *, struct request *, void *, unsigned int, gfp_t);
extern int blk_rq_map_user_iov(struct request_queue *, struct request *,
struct rq_map_data *, const struct iov_iter *,
--
2.25.1