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nbd-server: Call blk_set_allow_aio_context_change()

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The NBD server uses an AioContext notifier, so it can tolerate that its
BlockBackend is switched to a different AioContext. Before we start
actually calling bdrv_try_set_aio_context(), which checks for
consistency, outside of test cases, we need to make sure that the NBD
server actually allows this.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Kevin Wolf 2019-05-24 10:41:34 +02:00
parent 087ba459a2
commit 45e92a9011
3 changed files with 35 additions and 0 deletions
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nbd/server.c
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@ -1491,6 +1491,7 @@ NBDExport *nbd_export_new(BlockDriverState *bs, uint64_t dev_offset,
goto fail;
}
blk_set_enable_write_cache(blk, !writethrough);
blk_set_allow_aio_context_change(blk, true);
exp->refcount = 1;
QTAILQ_INIT(&exp->clients);