linux-kernel - Re: PAGE_SIZE Availability Inconsistency

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Message-ID: <45F0E014.8060907@zytor.com>
Date:	Thu, 08 Mar 2007 20:18:28 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Anton Blanchard <anton@...ba.org>
CC:	David Miller <davem@...emloft.net>, hch@...radead.org,
	arjan@...radead.org, zippel@...ux-m68k.org, dmlb2000@...il.com,
	linux-kernel@...r.kernel.org, gdb@...rceware.org
Subject: Re: PAGE_SIZE Availability Inconsistency

Anton Blanchard wrote:
> Hi,
> 
>> I might be missing something but doesn't this break every
>> SWAP partition that was created with something other than
>> MIN_PAGE_SIZE?
> 
> It does. I was thinking we could work around it in ppc64 (64kB is quite
> new), but I forgot there are options on sparc64 to change the page size :)
> 
> The other option is to create a v3 swap format that doesnt use any
> PAGE_SIZE parameters.
> 

The best thing to do would be to look for the magic both at PAGE_SIZE 
(for compatibility) and MIN_PAGE_SIZE (for sanity.)

	-hpa
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