Re: [PATCH] [RFC] Checkpoint/restart eventfd

[Oren Laadan <orenl-RdfvBDnrOixBDgjK7y7TUQ@public.gmane.org>]

Matt Helsley wrote:
> Save/restore eventfd files. These are anon_inodes just like epoll
> but instead of a set of files to poll they are a 64-bit counter
> and a flag value. Used for AIO.
> 
> Signed-off-by: Matt Helsley <matthltc-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
> 
> NOTE: Marked [RFC] because it strangely does not pass my adapted LTP
> 	test cases unless it's running from a checkpointed image.
> 	Seems to be a mistake in the test case adaptation.
> ---

[...]

> @@ -223,11 +225,34 @@ static ssize_t eventfd_write(struct file *file, const char __user *buf, size_t c
>  	return res;
>  }

Following should be within #if/#endif CONFIG_CHECKPOINT, and same
for eventfd_restart(). (fix it when pulled).

>  
> +static int eventfd_checkpoint(struct ckpt_ctx *ckpt_ctx, struct file *file)
> +{
> +	struct eventfd_ctx *ctx;
> +	struct ckpt_hdr_file_eventfd *h;
> +	int ret = -ENOMEM;

[...]

Oren.