51 lines
1.7 KiB
Diff
51 lines
1.7 KiB
Diff
From 7e334715074c7a4090578ed178834f3318d4b969 Mon Sep 17 00:00:00 2001
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From: Keith Busch <kbusch@kernel.org>
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Date: Thu, 29 Sep 2022 13:05:23 -0700
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Subject: [PATCH 2/2] block: use the request length for iov alignment
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RH-Author: Kevin Wolf <kwolf@redhat.com>
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RH-MergeRequest: 123: block: Fix memory alignment of requests
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RH-Bugzilla: 2143170
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RH-Acked-by: Alberto Faria <None>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
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RH-Commit: [2/2] 50cfd394fff4dbad87d7c90c987e241ed2367746 (kmwolf/centos-qemu-kvm)
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An iov length needs to be aligned to the logical block size, which may
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be larger than the memory alignment.
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Tested-by: Jens Axboe <axboe@kernel.dk>
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Signed-off-by: Keith Busch <kbusch@kernel.org>
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Message-Id: <20220929200523.3218710-3-kbusch@meta.com>
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Reviewed-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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(cherry picked from commit 25474d90aa50bd32e0de395a33d8de42dd6f2aef)
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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---
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block/file-posix.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/block/file-posix.c b/block/file-posix.c
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index e3f3de2780..af994aba2b 100644
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--- a/block/file-posix.c
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+++ b/block/file-posix.c
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@@ -2068,13 +2068,14 @@ static bool bdrv_qiov_is_aligned(BlockDriverState *bs, QEMUIOVector *qiov)
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{
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int i;
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size_t alignment = bdrv_min_mem_align(bs);
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+ size_t len = bs->bl.request_alignment;
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IO_CODE();
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for (i = 0; i < qiov->niov; i++) {
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if ((uintptr_t) qiov->iov[i].iov_base % alignment) {
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return false;
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}
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- if (qiov->iov[i].iov_len % alignment) {
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+ if (qiov->iov[i].iov_len % len) {
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return false;
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}
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}
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--
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2.31.1
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