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authorNeilBrown <neilb@suse.de>2007-09-25 12:35:59 +0200
committerJens Axboe <axboe@carl.home.kernel.dk>2007-10-10 09:25:56 +0200
commit5705f7021748a69d84d6567e68e8851dab551464 (patch)
tree5a6dbc8fc6055c0334f4a97540e36a7844b9c482 /drivers/block/xen-blkfront.c
parent9dfa52831e96194b8649613e3131baa2c109f7dc (diff)
downloadop-kernel-dev-5705f7021748a69d84d6567e68e8851dab551464.zip
op-kernel-dev-5705f7021748a69d84d6567e68e8851dab551464.tar.gz
Introduce rq_for_each_segment replacing rq_for_each_bio
Every usage of rq_for_each_bio wraps a usage of bio_for_each_segment, so these can be combined into rq_for_each_segment. We define "struct req_iterator" to hold the 'bio' and 'index' that are needed for the double iteration. Signed-off-by: Neil Brown <neilb@suse.de> Various compile fixes by me... Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/block/xen-blkfront.c')
-rw-r--r--drivers/block/xen-blkfront.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 964e516..6af2501 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -150,9 +150,8 @@ static int blkif_queue_request(struct request *req)
struct blkfront_info *info = req->rq_disk->private_data;
unsigned long buffer_mfn;
struct blkif_request *ring_req;
- struct bio *bio;
+ struct req_iterator iter;
struct bio_vec *bvec;
- int idx;
unsigned long id;
unsigned int fsect, lsect;
int ref;
@@ -186,8 +185,7 @@ static int blkif_queue_request(struct request *req)
ring_req->operation = BLKIF_OP_WRITE_BARRIER;
ring_req->nr_segments = 0;
- rq_for_each_bio (bio, req) {
- bio_for_each_segment (bvec, bio, idx) {
+ rq_for_each_segment(bvec, req, iter) {
BUG_ON(ring_req->nr_segments
== BLKIF_MAX_SEGMENTS_PER_REQUEST);
buffer_mfn = pfn_to_mfn(page_to_pfn(bvec->bv_page));
@@ -213,7 +211,6 @@ static int blkif_queue_request(struct request *req)
.last_sect = lsect };
ring_req->nr_segments++;
- }
}
info->ring.req_prod_pvt++;
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