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| author | NeilBrown <neilb@suse.de> | 2007-09-25 12:35:59 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@carl.home.kernel.dk> | 2007-10-10 09:25:56 +0200 |
| commit | 5705f7021748a69d84d6567e68e8851dab551464 (patch) | |
| tree | 5a6dbc8fc6055c0334f4a97540e36a7844b9c482 /drivers/block/xen-blkfront.c | |
| parent | 9dfa52831e96194b8649613e3131baa2c109f7dc (diff) | |
| download | op-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.c | 7 |
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++; |
