diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2022-12-07 14:18:30 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2022-12-15 16:08:23 +0100 |
| commit | e13550558840422f980a0a71efe52ee83f37933d (patch) | |
| tree | 4cf1f58f36d862ffb20da02e948f85aa7b5bf64f /blockdev.c | |
| parent | 617f3a963589dbd54fe1f323eeac36411b352a0e (diff) | |
block: Fix locking in external_snapshot_prepare()
bdrv_img_create() polls internally (when calling bdrv_create(), which is
a co_wrapper), so it can't be called while holding the lock of any
AioContext except the current one without causing deadlocks. Drop the
lock around the call in external_snapshot_prepare().
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20221207131838.239125-11-kwolf@redhat.com>
Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'blockdev.c')
| -rw-r--r-- | blockdev.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/blockdev.c b/blockdev.c index d2f80b0386..ebf952cd21 100644 --- a/blockdev.c +++ b/blockdev.c @@ -1507,10 +1507,14 @@ static void external_snapshot_prepare(BlkActionState *common, goto out; } bdrv_refresh_filename(state->old_bs); + + aio_context_release(aio_context); bdrv_img_create(new_image_file, format, state->old_bs->filename, state->old_bs->drv->format_name, NULL, size, flags, false, &local_err); + aio_context_acquire(aio_context); + if (local_err) { error_propagate(errp, local_err); goto out; |