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[Qemu-devel] [PATCHv5 4/6] block: avoid creating oversized writes in mul
From: |
Peter Lieven |
Subject: |
[Qemu-devel] [PATCHv5 4/6] block: avoid creating oversized writes in multiwrite_merge |
Date: |
Sat, 25 Oct 2014 18:18:36 +0200 |
Signed-off-by: Peter Lieven <address@hidden>
Reviewed-by: Ronnie Sahlberg <address@hidden>
Reviewed-by: Max Reitz <address@hidden>
---
block.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/block.c b/block.c
index 76fcc1d..4179341 100644
--- a/block.c
+++ b/block.c
@@ -4446,6 +4446,11 @@ static int multiwrite_merge(BlockDriverState *bs,
BlockRequest *reqs,
merge = 0;
}
+ if (bs->bl.max_transfer_length && reqs[outidx].nb_sectors +
+ reqs[i].nb_sectors > bs->bl.max_transfer_length) {
+ merge = 0;
+ }
+
if (merge) {
size_t size;
QEMUIOVector *qiov = g_malloc0(sizeof(*qiov));
--
1.7.9.5