Re: Word-at-a-time dcache name accesses (was Re: .. anybody know of any filesystems that depend on the exact VFS 'namehash' implementation?)

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To: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Subject: Re: Word-at-a-time dcache name accesses (was Re: .. anybody know of any filesystems that depend on the exact VFS 'namehash' implementation?)
From: "H. Peter Anvin" <hpa@xxxxxxxxx>
Date: Fri, 02 Mar 2012 16:38:41 -0800
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, linux-fsdevel <linux-fsdevel@xxxxxxxxxxxxxxx>, Al Viro <viro@xxxxxxxxxxxxxxxxxx>
In-reply-to: <alpine.LFD.2.02.1203021544300.28247@i5.linux-foundation.org>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.1) Gecko/20120209 Thunderbird/10.0.1

On 03/02/2012 03:46 PM, Linus Torvalds wrote:
> 
> Comments?
> 

My biggest concern is what happens when this happens to be at the end of
mapped kernel memory and we overrun the page?

	-hpa

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- Word-at-a-time dcache name accesses (was Re: .. anybody know of any filesystems that depend on the exact VFS 'namehash' implementation?)
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