From: Wen Congyang <wency@cn.fujitsu.com>
To: qemu-devl <qemu-devel@nongnu.org>, Kevin Wolf <kwolf@redhat.com>,
Jeff Cody <jcody@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>,
Fam Zheng <famz@redhat.com>
Subject: [Qemu-devel] [PATCH v2] mirror: correct buf_size
Date: Thu, 14 May 2015 18:29:27 +0800 [thread overview]
Message-ID: <55547907.5000203@cn.fujitsu.com> (raw)
If buf_size % granularity is not 0, mirror_free_init() will
do dangerous things.
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
---
block/mirror.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/mirror.c b/block/mirror.c
index 58f391a..9521212 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -684,7 +684,7 @@ static void mirror_start_job(BlockDriverState *bs, BlockDriverState *target,
s->is_none_mode = is_none_mode;
s->base = base;
s->granularity = granularity;
- s->buf_size = MAX(buf_size, granularity);
+ s->buf_size = ROUND_UP(buf_size, granularity);
s->dirty_bitmap = bdrv_create_dirty_bitmap(bs, granularity, NULL, errp);
if (!s->dirty_bitmap) {
--
2.1.0
next reply other threads:[~2015-05-14 10:25 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-14 10:29 Wen Congyang [this message]
2015-05-14 10:38 ` [Qemu-devel] [PATCH v2] mirror: correct buf_size Paolo Bonzini
2015-05-14 14:06 ` Fam Zheng
2015-05-14 14:09 ` Paolo Bonzini
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