linux-kernel - Re: [PATCHv2 0/6] Make vma_is

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Message-ID: <20150721221429.GA7478@node.dhcp.inet.fi>
Date:	Wed, 22 Jul 2015 01:14:29 +0300
From:	"Kirill A. Shutemov" <kirill@...temov.name>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Oleg Nesterov <oleg@...hat.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCHv2 0/6] Make vma_is_anonymous() reliable

On Fri, Jul 17, 2015 at 02:53:07PM +0300, Kirill A. Shutemov wrote:
> We rely on ->vm_ops == NULL to detect anonymous VMA but this check is not
> always reliable:
> 
>  - MPX sets ->vm_ops on anonymous VMA;
> 
>   - many drivers don't set ->vm_ops. See for instance hpet_mmap().
> 
>   This patchset makes vma_is_anonymous() more reliable and makes few
>   cleanups around the code.
> 
> v2:
>  - drop broken patch;
>  - more cleanup for mpx code (Oleg);
>  - vma_is_anonymous() in create_huge_pmd() and wp_huge_pmd();
> 
> Kirill A. Shutemov (5):
>   mm: mark most vm_operations_struct const
>   x86, mpx: do not set ->vm_ops on mpx VMAs
>   mm: make sure all file VMAs have ->vm_ops set
>   mm: use vma_is_anonymous() in create_huge_pmd() and wp_huge_pmd()
>   mm, madvise: use vma_is_anonymous() to check for anon VMA
> 
> Oleg Nesterov (1):
>   mm, mpx: add "vm_flags_t vm_flags" arg to do_mmap_pgoff()

ping?

-- 
 Kirill A. Shutemov
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