Merge branch 'stable/for-jens-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git...

[linux-drm-fsl-dcu.git] / drivers / block / xen-blkfront.c

diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 44b33d39441b1235150a87486359cea2f304d329..7a8a73f1fc0462feab5bad706573ff6eb4536ef7 100644 (file)
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -1075,12 +1075,6 @@ static void blkif_completion(struct blk_shadow *s, struct blkfront_info *info,
                s->req.u.indirect.nr_segments : s->req.u.rw.nr_segments;
 
        if (bret->operation == BLKIF_OP_READ && info->feature_persistent) {
-               /*
-                * Copy the data received from the backend into the bvec.
-                * Since bv_offset can be different than 0, and bv_len different
-                * than PAGE_SIZE, we have to keep track of the current offset,
-                * to be sure we are copying the data from the right shared page.
-                */
                for_each_sg(s->sg, sg, nseg, i) {
                        BUG_ON(sg->offset + sg->length > PAGE_SIZE);
                        shared_data = kmap_atomic(