linux-kernel - Re: [RFC v5][PATCH 2/8] General infrastructure for checkpoint restart

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Date:	Mon, 15 Sep 2008 11:00:52 -0700
From:	Dave Hansen <dave@...ux.vnet.ibm.com>
To:	Oren Laadan <orenl@...columbia.edu>
Cc:	arnd@...db.de, jeremy@...p.org, linux-kernel@...r.kernel.org,
	containers@...ts.linux-foundation.org
Subject: Re: [RFC v5][PATCH 2/8] General infrastructure for checkpoint
	restart

On Sat, 2008-09-13 at 19:06 -0400, Oren Laadan wrote:
> 
> +
> +struct cr_ctx *cr_ctx_alloc(pid_t pid, int fd, unsigned long flags)
> +{
> +       struct cr_ctx *ctx;
> +
> +       ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
> +       if (!ctx)
> +               return ERR_PTR(-ENOMEM);
> +
> +       ctx->file = fget(fd);
> +       if (!ctx->file) {
> +               cr_ctx_free(ctx);
> +               return ERR_PTR(-EBADF);
> +       }
> +
> +       ctx->hbuf = (void *) __get_free_pages(GFP_KERNEL, CR_HBUF_ORDER);
> +       if (!ctx->hbuf) {
> +               cr_ctx_free(ctx);
> +               return ERR_PTR(-ENOMEM);
> +       }

Could you explain why you're not using the slab here?

-- Dave

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