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[PATCH] block: use the request length for iov alignment
From: |
Keith Busch |
Subject: |
[PATCH] block: use the request length for iov alignment |
Date: |
Thu, 8 Sep 2022 09:45:26 -0700 |
From: Keith Busch <kbusch@kernel.org>
An iov length needs to be aligned to the logical block size, which may
be larger than the memory alignment.
Signed-off-by: Keith Busch <kbusch@kernel.org>
---
block/io.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/block/io.c b/block/io.c
index 0a8cbefe86..296d4b49a7 100644
--- a/block/io.c
+++ b/block/io.c
@@ -3243,13 +3243,14 @@ 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;
IO_CODE();
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;
}
}
--
2.30.2