On Fri, 05/05 11:02, Stefan Hajnoczi wrote:
> diff --git a/include/block/aio.h b/include/block/aio.h
> index 406e323..b3d6f76 100644
> --- a/include/block/aio.h
> +++ b/include/block/aio.h
> @@ -454,8 +454,14 @@ static inline void aio_disable_external(AioContext *ctx)
> */
> static inline void aio_enable_external(AioContext *ctx)
> {
> - assert(ctx->external_disable_cnt > 0);
> - atomic_dec(&ctx->external_disable_cnt);
> + int old;
> +
> + old = atomic_dec_fetch(&ctx->external_disable_cnt);
Did you mean atomic_fetch_dec? atomic_dec_fetch is new, not old.
> + assert(old > 0);
> + if (old == 1) {
> + /* Kick event loop so it re-arms file descriptors */
> + aio_notify(ctx);
> + }
> }
>
> /**
> --
> 2.9.3
>
