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Date: Thu, 19 Aug 2004 15:39:40 -0500
From: Olof Johansson <olof@austin.ibm.com>
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To: Andrew Morton <akpm@osdl.org>
CC: Paul Mackerras <paulus@samba.org>, viro@parcelfarce.linux.theplanet.co.uk,
       linux-kernel@vger.kernel.org
Subject: Re: Alignment of bitmaps for ext2_set_bit et al.
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Andrew Morton wrote:

>Paul Mackerras <paulus@samba.org> wrote:
>  
>
>>Olof has made a patch that uses atomics for these on ppc64 rather than
>>locking and unlocking a lock, but it will only work correctly if the
>>bitmap is always 8-byte aligned.
>>    
>>
>
>Sounds sane, as long as you get firmly notified when a poorly-aligned
>address is fed in.
>  
>
The notification is in the form of an unalignment trap resulting in a 
panic, is that firm enough? :-)


-Olof