From 5d79960f00eebe7a8a8bcd423f39c4e72f3366d1 Mon Sep 17 00:00:00 2001 From: Fam Zheng Date: Fri, 29 Jun 2018 06:11:43 +0200 Subject: [PATCH 39/57] raw: Implement copy offloading RH-Author: Fam Zheng Message-id: <20180629061153.12687-4-famz@redhat.com> Patchwork-id: 81155 O-Subject: [RHEL-7.6 qemu-kvm-rhev PATCH v2 03/13] raw: Implement copy offloading Bugzilla: 1482537 RH-Acked-by: Stefan Hajnoczi RH-Acked-by: Max Reitz RH-Acked-by: Kevin Wolf Just pass down to ->file. Signed-off-by: Fam Zheng Reviewed-by: Stefan Hajnoczi Message-id: 20180601092648.24614-4-famz@redhat.com Signed-off-by: Stefan Hajnoczi (cherry picked from commit 72d219e2f916adeec9845473d239571a267f3314) Signed-off-by: Fam Zheng Signed-off-by: Miroslav Rezanina --- block/raw-format.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/block/raw-format.c b/block/raw-format.c index b69a067..f2e468d 100644 --- a/block/raw-format.c +++ b/block/raw-format.c @@ -497,6 +497,36 @@ static int raw_probe_geometry(BlockDriverState *bs, HDGeometry *geo) return bdrv_probe_geometry(bs->file->bs, geo); } +static int coroutine_fn raw_co_copy_range_from(BlockDriverState *bs, + BdrvChild *src, uint64_t src_offset, + BdrvChild *dst, uint64_t dst_offset, + uint64_t bytes, BdrvRequestFlags flags) +{ + int ret; + + ret = raw_adjust_offset(bs, &src_offset, bytes, false); + if (ret) { + return ret; + } + return bdrv_co_copy_range_from(bs->file, src_offset, dst, dst_offset, + bytes, flags); +} + +static int coroutine_fn raw_co_copy_range_to(BlockDriverState *bs, + BdrvChild *src, uint64_t src_offset, + BdrvChild *dst, uint64_t dst_offset, + uint64_t bytes, BdrvRequestFlags flags) +{ + int ret; + + ret = raw_adjust_offset(bs, &dst_offset, bytes, true); + if (ret) { + return ret; + } + return bdrv_co_copy_range_to(src, src_offset, bs->file, dst_offset, bytes, + flags); +} + BlockDriver bdrv_raw = { .format_name = "raw", .instance_size = sizeof(BDRVRawState), @@ -513,6 +543,8 @@ BlockDriver bdrv_raw = { .bdrv_co_pwrite_zeroes = &raw_co_pwrite_zeroes, .bdrv_co_pdiscard = &raw_co_pdiscard, .bdrv_co_block_status = &raw_co_block_status, + .bdrv_co_copy_range_from = &raw_co_copy_range_from, + .bdrv_co_copy_range_to = &raw_co_copy_range_to, .bdrv_truncate = &raw_truncate, .bdrv_getlength = &raw_getlength, .has_variable_length = true, -- 1.8.3.1