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path: root/drivers/block/lguest_blk.c
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Diffstat (limited to 'drivers/block/lguest_blk.c')
-rw-r--r--drivers/block/lguest_blk.c36
1 files changed, 17 insertions, 19 deletions
diff --git a/drivers/block/lguest_blk.c b/drivers/block/lguest_blk.c
index 160cf14431a..fa8e42341b8 100644
--- a/drivers/block/lguest_blk.c
+++ b/drivers/block/lguest_blk.c
@@ -142,25 +142,23 @@ static irqreturn_t lgb_irq(int irq, void *_bd)
* return the total length. */
static unsigned int req_to_dma(struct request *req, struct lguest_dma *dma)
{
- unsigned int i = 0, idx, len = 0;
- struct bio *bio;
-
- rq_for_each_bio(bio, req) {
- struct bio_vec *bvec;
- bio_for_each_segment(bvec, bio, idx) {
- /* We told the block layer not to give us too many. */
- BUG_ON(i == LGUEST_MAX_DMA_SECTIONS);
- /* If we had a zero-length segment, it would look like
- * the end of the data referred to by the "struct
- * lguest_dma", so make sure that doesn't happen. */
- BUG_ON(!bvec->bv_len);
- /* Convert page & offset to a physical address */
- dma->addr[i] = page_to_phys(bvec->bv_page)
- + bvec->bv_offset;
- dma->len[i] = bvec->bv_len;
- len += bvec->bv_len;
- i++;
- }
+ unsigned int i = 0, len = 0;
+ struct req_iterator iter;
+ struct bio_vec *bvec;
+
+ rq_for_each_segment(bvec, req, iter) {
+ /* We told the block layer not to give us too many. */
+ BUG_ON(i == LGUEST_MAX_DMA_SECTIONS);
+ /* If we had a zero-length segment, it would look like
+ * the end of the data referred to by the "struct
+ * lguest_dma", so make sure that doesn't happen. */
+ BUG_ON(!bvec->bv_len);
+ /* Convert page & offset to a physical address */
+ dma->addr[i] = page_to_phys(bvec->bv_page)
+ + bvec->bv_offset;
+ dma->len[i] = bvec->bv_len;
+ len += bvec->bv_len;
+ i++;
}
/* If the array isn't full, we mark the end with a 0 length */
if (i < LGUEST_MAX_DMA_SECTIONS)