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authorStefan Hajnoczi <stefanha@redhat.com>2014-11-19 14:19:45 +0000
committerKevin Wolf <kwolf@redhat.com>2014-12-10 10:25:30 +0100
commit729962f6db43bf262a446f5e13d900ffb3c54a88 (patch)
treee93bd7014305629874c116d50cea985ce097c041 /tests/virtio-blk-test.c
parente3442099a2794925dfbe83711cd204caf80eae60 (diff)
blockdev: acquire AioContext in change-backing-file
Add dataplane support to the change-backing-file QMP commands. By acquiring the AioContext we avoid race conditions with the dataplane thread which may also be accessing the BlockDriverState. Note that this command operates on both bs and a node in its chain (image_bs). The bdrv_chain_contains(bs, image_bs) check guarantees that bs and image_bs are in the same AioContext. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'tests/virtio-blk-test.c')
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