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qemu-io-cmds: Use bdrv_coroutine_enter
qemu_coroutine_create associates @co to qemu_aio_context but we poll blk's context below. If the coroutine yields, it may never get resumed again. Use bdrv_coroutine_enter to make sure we are starting the I/O on the right context. Signed-off-by: Fam Zheng <famz@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com>
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@ -521,7 +521,7 @@ static int do_co_pwrite_zeroes(BlockBackend *blk, int64_t offset,
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}
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co = qemu_coroutine_create(co_pwrite_zeroes_entry, &data);
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qemu_coroutine_enter(co);
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bdrv_coroutine_enter(blk_bs(blk), co);
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while (!data.done) {
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aio_poll(blk_get_aio_context(blk), true);
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}
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