linux-kernel - Re: [patch 7/7] powerpc: lockless get_user_pages

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]

Date:	Tue, 10 Jun 2008 12:00:48 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	npiggin@...e.de
cc:	akpm@...ux-foundation.org, torvalds@...ux-foundation.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	benh@...nel.crashing.org, paulus@...ba.org
Subject: Re: [patch 7/7] powerpc: lockless get_user_pages_fast

On Thu, 5 Jun 2008, npiggin@...e.de wrote:

> Index: linux-2.6/include/linux/mm.h
> ===================================================================
> --- linux-2.6.orig/include/linux/mm.h
> +++ linux-2.6/include/linux/mm.h
> @@ -244,7 +244,7 @@ static inline int put_page_testzero(stru
>   */
>  static inline int get_page_unless_zero(struct page *page)
>  {
> -	VM_BUG_ON(PageTail(page));
> +	VM_BUG_ON(PageCompound(page));
>  	return atomic_inc_not_zero(&page->_count);
>  }

This is reversing the modification to make get_page_unless_zero() usable 
with compound page heads. Will break the slab defrag patchset.


--
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/