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[Qemu-devel] [PATCH for-2.9 2/2] commit: Set commit_top_bs->total_sector

From: Kevin Wolf
Subject: [Qemu-devel] [PATCH for-2.9 2/2] commit: Set commit_top_bs->total_sectors
Date: Thu, 6 Apr 2017 19:14:11 +0200

Like in the mirror filter driver, we also need to set the image size for
the commit filter driver. This is less likely to be a problem in
practice than for the mirror because we're not at the active layer here,
but attaching new parents to a node in the middle of the chain is
possible, so the size needs to be correct anyway.

Signed-off-by: Kevin Wolf <address@hidden>
 block/commit.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/block/commit.c b/block/commit.c
index 4c38220..91d2c34 100644
--- a/block/commit.c
+++ b/block/commit.c
@@ -335,6 +335,7 @@ void commit_start(const char *job_id, BlockDriverState *bs,
     if (commit_top_bs == NULL) {
         goto fail;
+    commit_top_bs->total_sectors = top->total_sectors;
     bdrv_set_aio_context(commit_top_bs, bdrv_get_aio_context(top));
     bdrv_set_backing_hd(commit_top_bs, top, &local_err);

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