* [Qemu-devel] [PATCH] block: Fix multiwrite with overlapping requests
@ 2010-05-21 9:39 Kevin Wolf
0 siblings, 0 replies; only message in thread
From: Kevin Wolf @ 2010-05-21 9:39 UTC (permalink / raw)
To: qemu-devel; +Cc: kwolf
With overlapping requests, the total number of sectors is smaller than the sum
of the nb_sectors of both requests.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
block.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/block.c b/block.c
index 72d9441..1586b79 100644
--- a/block.c
+++ b/block.c
@@ -2029,7 +2029,7 @@ static int multiwrite_merge(BlockDriverState *bs, BlockRequest *reqs,
// Add the second request
qemu_iovec_concat(qiov, reqs[i].qiov, reqs[i].qiov->size);
- reqs[outidx].nb_sectors += reqs[i].nb_sectors;
+ reqs[outidx].nb_sectors = qiov->size >> 9;
reqs[outidx].qiov = qiov;
mcb->callbacks[i].free_qiov = reqs[outidx].qiov;
--
1.6.6.1
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2010-05-21 9:39 [Qemu-devel] [PATCH] block: Fix multiwrite with overlapping requests Kevin Wolf
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