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| author | Kevin Wolf <kwolf@redhat.com> | 2023-06-05 10:57:10 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2023-06-28 08:46:23 +0200 |
| commit | 31b2ddfea304afc498aca8cac171020ef33eb89b (patch) | |
| tree | 3d0f42e0e2539c0f354169ffc2678456e8653190 /docs/devel | |
| parent | 22dd9405446f5301f32be4f9e88db6d9b582fd03 (diff) | |
| download | qemu-31b2ddfea304afc498aca8cac171020ef33eb89b.zip qemu-31b2ddfea304afc498aca8cac171020ef33eb89b.tar.gz qemu-31b2ddfea304afc498aca8cac171020ef33eb89b.tar.bz2 | |
graph-lock: Unlock the AioContext while polling
If the caller keeps the AioContext lock for a block node in an iothread,
polling in bdrv_graph_wrlock() deadlocks if the condition isn't
fulfilled immediately.
Now that all callers make sure to actually have the AioContext locked
when they call bdrv_replace_child_noperm() like they should, we can
change bdrv_graph_wrlock() to take a BlockDriverState whose AioContext
lock the caller holds (NULL if it doesn't) and unlock it temporarily
while polling.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20230605085711.21261-11-kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'docs/devel')
0 files changed, 0 insertions, 0 deletions