X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=block%2Fblk-merge.c;h=b5c5c4a9e3f08d051a25d44e92689580d19cbce5;hb=66916cd2670e2033a468c492a0192a643ff0965e;hp=7506c4fe0264bd6038d24108f5438fea42478508;hpb=0dbd888936a23514716b8d944775bc56f731363a;p=linux-2.6-omap-h63xx.git

diff --git a/block/blk-merge.c b/block/blk-merge.c
index 7506c4fe026..b5c5c4a9e3f 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -220,6 +220,15 @@ new_segment:
 		bvprv = bvec;
 	} /* segments in rq */
 
+
+	if (unlikely(rq->cmd_flags & REQ_COPY_USER) &&
+	    (rq->data_len & q->dma_pad_mask)) {
+		unsigned int pad_len = (q->dma_pad_mask & ~rq->data_len) + 1;
+
+		sg->length += pad_len;
+		rq->extra_len += pad_len;
+	}
+
 	if (q->dma_drain_size && q->dma_drain_needed(rq)) {
 		if (rq->cmd_flags & REQ_RW)
 			memset(q->dma_drain_buffer, 0, q->dma_drain_size);
@@ -231,7 +240,7 @@ new_segment:
 			    ((unsigned long)q->dma_drain_buffer) &
 			    (PAGE_SIZE - 1));
 		nsegs++;
-		rq->data_len += q->dma_drain_size;
+		rq->extra_len += q->dma_drain_size;
 	}
 
 	if (sg)