X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fblock%2Fxen-blkfront.c;h=2bdebcb3ff16dfdc73a9047e990caed589e0f70e;hb=95b00786f3b8fa99f53931361beeb4c10504ad87;hp=6746c29181f81493a00639a8117d3e5b7e7d82e4;hpb=d083450939dcfdc9f0e791e98478bd6d8ff80eea;p=linux-2.6 diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 6746c29181..2bdebcb3ff 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; @@ -186,34 +185,31 @@ 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) { - BUG_ON(ring_req->nr_segments - == BLKIF_MAX_SEGMENTS_PER_REQUEST); - buffer_mfn = pfn_to_mfn(page_to_pfn(bvec->bv_page)); - fsect = bvec->bv_offset >> 9; - lsect = fsect + (bvec->bv_len >> 9) - 1; - /* install a grant reference. */ - ref = gnttab_claim_grant_reference(&gref_head); - BUG_ON(ref == -ENOSPC); - - gnttab_grant_foreign_access_ref( + 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)); + fsect = bvec->bv_offset >> 9; + lsect = fsect + (bvec->bv_len >> 9) - 1; + /* install a grant reference. */ + ref = gnttab_claim_grant_reference(&gref_head); + BUG_ON(ref == -ENOSPC); + + gnttab_grant_foreign_access_ref( ref, info->xbdev->otherend_id, buffer_mfn, rq_data_dir(req) ); - info->shadow[id].frame[ring_req->nr_segments] = + info->shadow[id].frame[ring_req->nr_segments] = mfn_to_pfn(buffer_mfn); - ring_req->seg[ring_req->nr_segments] = + ring_req->seg[ring_req->nr_segments] = (struct blkif_request_segment) { .gref = ref, .first_sect = fsect, .last_sect = lsect }; - ring_req->nr_segments++; - } + ring_req->nr_segments++; } info->ring.req_prod_pvt++; @@ -241,7 +237,7 @@ static inline void flush_requests(struct blkfront_info *info) * do_blkif_request * read a block; request is in a request queue */ -static void do_blkif_request(request_queue_t *rq) +static void do_blkif_request(struct request_queue *rq) { struct blkfront_info *info = NULL; struct request *req; @@ -287,7 +283,7 @@ wait: static int xlvbd_init_blk_queue(struct gendisk *gd, u16 sector_size) { - request_queue_t *rq; + struct request_queue *rq; rq = blk_init_queue(do_blkif_request, &blkif_io_lock); if (rq == NULL)