49 lines
1.6 KiB
Diff
49 lines
1.6 KiB
Diff
|
From 9009b674a01dc0cd92c319c87714b5aca6e639f8 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Keith Busch <kbusch@kernel.org>
|
||
|
|
Date: Thu, 29 Sep 2022 13:05:23 -0700
|
||
|
|
Subject: [PATCH 2/2] block: use the request length for iov alignment
|
||
|
|
|
||
|
|
RH-Author: Kevin Wolf <kwolf@redhat.com>
|
||
|
|
RH-MergeRequest: 411: block: Fix iov_len check in bdrv_qiov_is_aligned()
|
||
|
|
RH-Jira: RHEL-60553
|
||
|
|
RH-Acked-by: Eric Blake <eblake@redhat.com>
|
||
|
|
RH-Acked-by: Jon Maloy <jmaloy@redhat.com>
|
||
|
|
RH-Commit: [2/2] 0e01d51cfb21ca43283626c2367e5c5d0d531736
|
||
|
|
|
||
|
|
An iov length needs to be aligned to the logical block size, which may
|
||
|
|
be larger than the memory alignment.
|
||
|
|
|
||
|
|
Tested-by: Jens Axboe <axboe@kernel.dk>
|
||
|
|
Signed-off-by: Keith Busch <kbusch@kernel.org>
|
||
|
|
Message-Id: <20220929200523.3218710-3-kbusch@meta.com>
|
||
|
|
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
|
||
|
|
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
|
||
|
|
(cherry picked from commit 25474d90aa50bd32e0de395a33d8de42dd6f2aef)
|
||
|
|
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
|
||
|
|
---
|
||
|
|
block/file-posix.c | 3 ++-
|
||
|
|
1 file changed, 2 insertions(+), 1 deletion(-)
|
||
|
|
|
||
|
|
diff --git a/block/file-posix.c b/block/file-posix.c
|
||
|
|
index b404e1544f..b84c5725cc 100644
|
||
|
|
--- a/block/file-posix.c
|
||
|
|
+++ b/block/file-posix.c
|
||
|
|
@@ -2058,12 +2058,13 @@ static bool bdrv_qiov_is_aligned(BlockDriverState *bs, QEMUIOVector *qiov)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
size_t alignment = bdrv_min_mem_align(bs);
|
||
|
|
+ size_t len = bs->bl.request_alignment;
|
||
|
|
|
||
|
|
for (i = 0; i < qiov->niov; i++) {
|
||
|
|
if ((uintptr_t) qiov->iov[i].iov_base % alignment) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
- if (qiov->iov[i].iov_len % alignment) {
|
||
|
|
+ if (qiov->iov[i].iov_len % len) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
--
|
||
|
|
2.45.2
|
||
|
|
|