From c35950bfa9abaaf16548a287a8d5d782a361414f Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Tue, 1 Mar 2011 16:22:28 -0500 Subject: [PATCH] xen/blkback: Union the blkif_request request specific fields Following in the steps of patch: "xen: Union the blkif_request request specific fields" this patch changes the blkback. Per the original patch: "Prepare for extending the block device ring to allow request specific fields, by moving the request specific fields for reads, writes and barrier requests to a union member." Cc: Owen Smith Signed-off-by: Konrad Rzeszutek Wilk --- drivers/xen/blkback/blkback.c | 14 +++++++------- include/xen/blkif.h | 8 ++++---- 2 files changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/xen/blkback/blkback.c b/drivers/xen/blkback/blkback.c index c08875b0ad6..eda50646775 100644 --- a/drivers/xen/blkback/blkback.c +++ b/drivers/xen/blkback/blkback.c @@ -426,7 +426,7 @@ static void dispatch_rw_block_io(blkif_t *blkif, } preq.dev = req->handle; - preq.sector_number = req->sector_number; + preq.sector_number = req->u.rw.sector_number; preq.nr_sects = 0; pending_req->blkif = blkif; @@ -438,11 +438,11 @@ static void dispatch_rw_block_io(blkif_t *blkif, for (i = 0; i < nseg; i++) { uint32_t flags; - seg[i].nsec = req->seg[i].last_sect - - req->seg[i].first_sect + 1; + seg[i].nsec = req->u.rw.seg[i].last_sect - + req->u.rw.seg[i].first_sect + 1; - if ((req->seg[i].last_sect >= (PAGE_SIZE >> 9)) || - (req->seg[i].last_sect < req->seg[i].first_sect)) + if ((req->u.rw.seg[i].last_sect >= (PAGE_SIZE >> 9)) || + (req->u.rw.seg[i].last_sect < req->u.rw.seg[i].first_sect)) goto fail_response; preq.nr_sects += seg[i].nsec; @@ -450,7 +450,7 @@ static void dispatch_rw_block_io(blkif_t *blkif, if (operation != READ) flags |= GNTMAP_readonly; gnttab_set_map_op(&map[i], vaddr(pending_req, i), flags, - req->seg[i].gref, blkif->domid); + req->u.rw.seg[i].gref, blkif->domid); } ret = HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, map, nseg); @@ -472,7 +472,7 @@ static void dispatch_rw_block_io(blkif_t *blkif, page_to_pfn(blkbk->pending_page(pending_req, i)), FOREIGN_FRAME(map[i].dev_bus_addr >> PAGE_SHIFT)); seg[i].buf = map[i].dev_bus_addr | - (req->seg[i].first_sect << 9); + (req->u.rw.seg[i].first_sect << 9); } if (ret) diff --git a/include/xen/blkif.h b/include/xen/blkif.h index d2742804691..ab794269fc5 100644 --- a/include/xen/blkif.h +++ b/include/xen/blkif.h @@ -96,12 +96,12 @@ static void inline blkif_get_x86_32_req(struct blkif_request *dst, struct blkif_ dst->nr_segments = src->nr_segments; dst->handle = src->handle; dst->id = src->id; - dst->sector_number = src->sector_number; + dst->u.rw.sector_number = src->sector_number; barrier(); if (n > dst->nr_segments) n = dst->nr_segments; for (i = 0; i < n; i++) - dst->seg[i] = src->seg[i]; + dst->u.rw.seg[i] = src->seg[i]; } static void inline blkif_get_x86_64_req(struct blkif_request *dst, struct blkif_x86_64_request *src) @@ -111,12 +111,12 @@ static void inline blkif_get_x86_64_req(struct blkif_request *dst, struct blkif_ dst->nr_segments = src->nr_segments; dst->handle = src->handle; dst->id = src->id; - dst->sector_number = src->sector_number; + dst->u.rw.sector_number = src->sector_number; barrier(); if (n > dst->nr_segments) n = dst->nr_segments; for (i = 0; i < n; i++) - dst->seg[i] = src->seg[i]; + dst->u.rw.seg[i] = src->seg[i]; } #endif /* __XEN_BLKIF_H__ */ -- 2.46.0