linux-kernel - Re: PAGE_SIZE Availability Inconsistency

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Message-ID: <20070321021202.GA11745@kryten>
Date:	Tue, 20 Mar 2007 21:12:02 -0500
From:	Anton Blanchard <anton@...ba.org>
To:	"H. Peter Anvin" <hpa@...or.com>
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


Hi,

> The advantage would be that it wouldn't require a v3 for platforms for 
> which MIN_PAGE_SIZE == PAGE_SIZE, which accounts for a very large 
> percentage of systems.
> 
> You still have to look for the darn magic in two places, so there is no 
> reason for it to be different.

The problem is if you can hit in two places then what PAGE_SIZE should
you use to size the contents of the swap header while remaining backward
compatible.

Im leaning towards Dave suggestion of creating a clean v3 swap header.

Anton
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