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| author | Kevin Wolf | 2018-05-29 17:17:45 +0200 |
|---|---|---|
| committer | Kevin Wolf | 2018-06-18 15:03:25 +0200 |
| commit | 6cd5c9d7b2df93ef54144f170d4c908934a4767f (patch) | |
| tree | 7b7787f054ba88d540e0741f03187aece7b921f1 /scripts/git-submodule.sh | |
| parent | block: Move bdrv_drain_all_begin() out of coroutine context (diff) | |
| download | qemu-6cd5c9d7b2df93ef54144f170d4c908934a4767f.tar.gz qemu-6cd5c9d7b2df93ef54144f170d4c908934a4767f.tar.xz qemu-6cd5c9d7b2df93ef54144f170d4c908934a4767f.zip | |
block: ignore_bds_parents parameter for drain functions
In the future, bdrv_drained_all_begin/end() will drain all invidiual
nodes separately rather than whole subtrees. This means that we don't
want to propagate the drain to all parents any more: If the parent is a
BDS, it will already be drained separately. Recursing to all parents is
unnecessary work and would make it an O(n²) operation.
Prepare the drain function for the changed drain_all by adding an
ignore_bds_parents parameter to the internal implementation that
prevents the propagation of the drain to BDS parents. We still (have to)
propagate it to non-BDS parents like BlockBackends or Jobs because those
are not drained separately.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'scripts/git-submodule.sh')
0 files changed, 0 insertions, 0 deletions