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authorKevin Wolf <kwolf@redhat.com>2016-03-21 10:49:51 +0100
committerKevin Wolf <kwolf@redhat.com>2016-05-19 16:45:29 +0200
commita5614993d79584af93bb845f69f59872b3f76cf8 (patch)
treee511d519aeb53d92c3f334d7f912c988a19cdfbd /blockdev.c
parent8ec4fe0a4bed4fa27e6f28a746bcf77b27cd05a3 (diff)
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block: Make sure throttled BDSes always have a BB
It was already true in principle that a throttled BDS always has a BB attached, except that the order of operations while attaching or detaching a BDS to/from a BB wasn't careful enough. This commit breaks graph manipulations while I/O throttling is enabled. It would have been possible to keep things working with some temporary hacks, but quite cumbersome, so it's not worth the hassle. We'll fix things again in a minute. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'blockdev.c')
-rw-r--r--blockdev.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/blockdev.c b/blockdev.c
index 1892b8ec8e..8106ca7654 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -2570,8 +2570,6 @@ void qmp_blockdev_change_medium(const char *device, const char *filename,
goto fail;
}
- blk_apply_root_state(blk, medium_bs);
-
bdrv_add_key(medium_bs, NULL, &err);
if (err) {
error_propagate(errp, err);
@@ -2596,6 +2594,8 @@ void qmp_blockdev_change_medium(const char *device, const char *filename,
goto fail;
}
+ blk_apply_root_state(blk, medium_bs);
+
qmp_blockdev_close_tray(device, errp);
fail: