dm-buffered: use errno_to_blk_status

Use errno_to_blk_status when setting bi_status.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>

---
 drivers/md/dm-buffered-target.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Index: linux-2.6/drivers/md/dm-buffered-target.c
===================================================================
--- linux-2.6.orig/drivers/md/dm-buffered-target.c
+++ linux-2.6/drivers/md/dm-buffered-target.c
@@ -118,7 +118,7 @@ static void _io(struct buffered_c *bc, s
 		if (IS_ERR(buffer)) {
 			/* Memorize first error in bio status. */
 			if (!bio->bi_status)
-				bio->bi_status = PTR_ERR(buffer);
+				bio->bi_status = errno_to_blk_status(PTR_ERR(buffer));
 
 			/* Continue with any split bio payload */
 		} else if (write) {
@@ -200,7 +200,7 @@ static void _write_zeroes(struct buffere
 			buffer = (mod ? dm_bufio_read : dm_bufio_new)(bc->bufio, block, &bp);
 
 		if (IS_ERR(buffer)) {
-			bio->bi_status = PTR_ERR(buffer);
+			bio->bi_status = errno_to_blk_status(PTR_ERR(buffer));
 			break;
 		}