Re: [PATCH 6/8] remove VM_HUGETLB and VM_RESERVED from CKPT_VMA_NOT_SUPPORTED

From: "Serge E. Hallyn" <serge-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org>
To: Nathan Lynch <ntl-e+AXbWqSrlAAvxtiuMwx3w@public.gmane.org>
Cc: containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org
Subject: Re: [PATCH 6/8] remove VM_HUGETLB and VM_RESERVED from CKPT_VMA_NOT_SUPPORTED
Date: Thu, 16 Sep 2010 22:35:55 -0500	[thread overview]
Message-ID: <20100917033555.GA18116@hallyn.com> (raw)
In-Reply-To: <1284494530-25946-7-git-send-email-ntl-e+AXbWqSrlAAvxtiuMwx3w@public.gmane.org>

Quoting Nathan Lynch (ntl-e+AXbWqSrlAAvxtiuMwx3w@public.gmane.org):
> Now that the hugetlb c/r support code is in place we can remove
> VM_HUGETLB from the bitmask of unsupported vma flags.
> 
> All huge pages are VM_RESERVED so a less coarse method is needed to
> prevent checkpoint of other reserved pages.
> 
> Signed-off-by: Nathan Lynch <ntl-e+AXbWqSrlAAvxtiuMwx3w@public.gmane.org>
> ---
>  include/linux/checkpoint.h |    3 +--
>  1 files changed, 1 insertions(+), 2 deletions(-)
> 
> diff --git a/include/linux/checkpoint.h b/include/linux/checkpoint.h
> index d9a65a7..e224490 100644
> --- a/include/linux/checkpoint.h
> +++ b/include/linux/checkpoint.h
> @@ -308,8 +308,7 @@ extern int checkpoint_memory_contents(struct ckpt_ctx *ctx,
>  extern int restore_memory_contents(struct ckpt_ctx *ctx, struct inode *inode);
>  
>  #define CKPT_VMA_NOT_SUPPORTED						\
> -	(VM_IO | VM_HUGETLB | VM_NONLINEAR | VM_PFNMAP |		\
> -	 VM_RESERVED | VM_HUGETLB | VM_NONLINEAR |	\
> +	(VM_IO | VM_NONLINEAR | VM_PFNMAP | VM_NONLINEAR |		\

	VM_NONLINEAR | VM_NONLINEAR  :)

>  	 VM_MAPPED_COPY | VM_INSERTPAGE | VM_MIXEDMAP | VM_SAO)
>  
>  /* signals */
> -- 
> 1.7.2.2
> 
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