commit | b0165585900f050f403cecba9d89adeccf35dd6c | [log] [tgz] |
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author | Kevin Wolf <kwolf@redhat.com> | Wed Dec 06 17:05:44 2017 +0100 |
committer | Kevin Wolf <kwolf@redhat.com> | Fri Dec 22 15:05:32 2017 +0100 |
tree | 82a19acb79e687005a43bdaed32f8c34fdcde05f | |
parent | 0152bf400fe3ca7facb382683bfcccda70ebf51a [diff] |
block: Add bdrv_subtree_drained_begin/end() bdrv_drained_begin() waits for the completion of requests in the whole subtree, but it only actually keeps its immediate bs parameter quiesced until bdrv_drained_end(). Add a version that keeps the whole subtree drained. As of this commit, graph changes cannot be allowed during a subtree drained section, but this will be fixed soon. Signed-off-by: Kevin Wolf <kwolf@redhat.com>