myri10ge: add barrier in myri10ge_send_cmd

[linux-2.6-omap-h63xx.git] / block / blk-merge.c

diff --git a/block/blk-merge.c b/block/blk-merge.c
index 0f58616bcd7f183514c43eb913f0e0c23c855215..73b23562af20086f3a8623df6e9f32561ae330b5 100644 (file)
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -55,7 +55,7 @@ void blk_recalc_rq_segments(struct request *rq)
        if (!rq->bio)
                return;
 
-       cluster = q->queue_flags & (1 << QUEUE_FLAG_CLUSTER);
+       cluster = test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags);
        hw_seg_size = seg_size = 0;
        phys_size = hw_size = nr_phys_segs = nr_hw_segs = 0;
        rq_for_each_segment(bv, rq, iter) {
@@ -128,7 +128,7 @@ EXPORT_SYMBOL(blk_recount_segments);
 static int blk_phys_contig_segment(struct request_queue *q, struct bio *bio,
                                   struct bio *nxt)
 {
-       if (!(q->queue_flags & (1 << QUEUE_FLAG_CLUSTER)))
+       if (!test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags))
                return 0;
 
        if (!BIOVEC_PHYS_MERGEABLE(__BVEC_END(bio), __BVEC_START(nxt)))
@@ -175,7 +175,7 @@ int blk_rq_map_sg(struct request_queue *q, struct request *rq,
        int nsegs, cluster;
 
        nsegs = 0;
-       cluster = q->queue_flags & (1 << QUEUE_FLAG_CLUSTER);
+       cluster = test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags);
 
        /*
         * for each bio in rq
@@ -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);