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From a7cfda7b304697450f0a55c22f4459b25999e9c5 Mon Sep 17 00:00:00 2001
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From: Max Reitz <mreitz@redhat.com>
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Date: Mon, 13 Mar 2017 17:47:05 +0100
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Subject: [PATCH 17/24] vhdx: Fix zero-fill iov length
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RH-Author: Max Reitz <mreitz@redhat.com>
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Message-id: <20170313174706.29316-2-mreitz@redhat.com>
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Patchwork-id: 74279
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O-Subject: [RHEL-7.4 qemu-kvm PATCH 8/9] vhdx: Fix zero-fill iov length
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Bugzilla: 1427176
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RH-Acked-by: Fam Zheng <famz@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
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From: Kevin Wolf <kwolf@redhat.com>
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Fix the length of the zero-fill for the back, which was accidentally
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using the same value as for the front. This is caught by qemu-iotests
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033.
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For consistency, change the code for the front as well to use the length
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stored in the iov (it is the same value, copied four lines above).
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Acked-by: Jeff Cody <jcody@redhat.com>
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(cherry picked from commit d1a126c53ddc563b7b731cee013e0362f7a5f22f)
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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block/vhdx.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/block/vhdx.c b/block/vhdx.c
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index 21ad6ad..47a872d 100644
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--- a/block/vhdx.c
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+++ b/block/vhdx.c
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@@ -1247,7 +1247,7 @@ static coroutine_fn int vhdx_co_writev(BlockDriverState *bs, int64_t sector_num,
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iov1.iov_base = qemu_blockalign(bs, iov1.iov_len);
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memset(iov1.iov_base, 0, iov1.iov_len);
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qemu_iovec_concat_iov(&hd_qiov, &iov1, 1, 0,
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- sinfo.block_offset);
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+ iov1.iov_len);
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sectors_to_write += iov1.iov_len >> BDRV_SECTOR_BITS;
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}
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@@ -1263,7 +1263,7 @@ static coroutine_fn int vhdx_co_writev(BlockDriverState *bs, int64_t sector_num,
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iov2.iov_base = qemu_blockalign(bs, iov2.iov_len);
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memset(iov2.iov_base, 0, iov2.iov_len);
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qemu_iovec_concat_iov(&hd_qiov, &iov2, 1, 0,
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- sinfo.block_offset);
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+ iov2.iov_len);
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sectors_to_write += iov2.iov_len >> BDRV_SECTOR_BITS;
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}
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}
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--
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1.8.3.1
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