linux-kernel - Re: [PATCH 3/5] metag: hugetlb: convert to vm_unmapped

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CANN689GgS+3z+BLr2JPQqe-_=wzibRLS=wkkEehteR-CQU0LTA@mail.gmail.com>
Date:	Fri, 15 Feb 2013 00:04:07 -0800
From:	Michel Lespinasse <walken@...gle.com>
To:	James Hogan <james.hogan@...tec.com>
Cc:	linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH 3/5] metag: hugetlb: convert to vm_unmapped_area()

On Wed, Feb 13, 2013 at 4:03 AM, James Hogan <james.hogan@...tec.com> wrote:
> Convert hugetlb_get_unmapped_area_new_pmd() to use vm_unmapped_area()
> rather than searching the virtual address space itself. This fixes the
> following errors in linux-next due to the specified members being
> removed after other architectures have already been converted:
>
> arch/metag/mm/hugetlbpage.c: In function 'hugetlb_get_unmapped_area_new_pmd':
> arch/metag/mm/hugetlbpage.c:199: error: 'struct mm_struct' has no member named 'cached_hole_size'
> arch/metag/mm/hugetlbpage.c:200: error: 'struct mm_struct' has no member named 'free_area_cache'
> arch/metag/mm/hugetlbpage.c:215: error: 'struct mm_struct' has no member named 'cached_hole_size'
>
> Signed-off-by: James Hogan <james.hogan@...tec.com>
> Cc: Michel Lespinasse <walken@...gle.com>

Looks good. Just one thing, which I don't have full context to evaluate:

> +       info.align_mask = PAGE_MASK & HUGEPT_MASK;

This will work only if HUGEPT_MASK == HUGEPT_SIZE - 1, as opposed to
the PAGE_MASK definition which is ~(PAGE_SIZE - 1).
Not sure how HUGEPT_MASK is defined, so please double check that.

Acked-by: Michel Lespinasse <walken@...gle.com>

-- 
Michel "Walken" Lespinasse
A program is never fully debugged until the last user dies.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/