From: David Miller <davem@davemloft.net>
To: anton@samba.org
Cc: hpa@zytor.com, hch@infradead.org, arjan@infradead.org,
zippel@linux-m68k.org, dmlb2000@gmail.com,
linux-kernel@vger.kernel.org, gdb@sourceware.org
Subject: Re: PAGE_SIZE Availability Inconsistency
Date: Thu, 08 Mar 2007 13:48:25 -0800 (PST) [thread overview]
Message-ID: <20070308.134825.45514445.davem@davemloft.net> (raw)
In-Reply-To: <20070308214236.GA4154@kryten>
From: Anton Blanchard <anton@samba.org>
Date: Thu, 8 Mar 2007 15:42:36 -0600
> > The easiest way to fix this would be to always park the swap magic at
> > the offset of the smallest page size in use, which is 4K. This is
> > analogous how the offset for the ext2/3 superblock got fixed at 1K --
> > for 1K blocks, it's the second block, but for larger blocks, it's part
> > of the first block. If we fix the offset of the swap magic at 4096
> > minus the offset that's already there, it will always fall in the first
> > page regardless of page size.
>
> Yeah that makes sense. I gave it a go by creating a MIN_PAGE_SIZE
> define, and allowing an architecture to override it if required.
I might be missing something but doesn't this break every
SWAP partition that was created with something other than
MIN_PAGE_SIZE?
next prev parent reply other threads:[~2007-03-08 21:48 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-05 23:55 David Brown
2007-03-05 23:59 ` Eric Dumazet
2007-03-06 0:01 ` Randy Dunlap
2007-03-06 0:03 ` David Miller
2007-03-06 0:04 ` David Brown
2007-03-06 0:26 ` David Miller
2007-03-06 2:21 ` H. Peter Anvin
2007-03-08 21:08 ` Avi Kivity
2007-03-08 22:21 ` H. Peter Anvin
2007-03-19 19:39 ` Eric W. Biederman
2007-03-06 9:29 ` Christoph Hellwig
2007-03-08 2:18 ` Roman Zippel
2007-03-08 5:28 ` David Brown
2007-03-08 8:32 ` Christoph Hellwig
2007-03-08 9:00 ` Christoph Hellwig
2007-03-08 15:53 ` Arjan van de Ven
2007-03-08 16:08 ` Christoph Hellwig
2007-03-08 16:21 ` Daniel Jacobowitz
2007-03-08 17:05 ` H. Peter Anvin
2007-03-08 17:12 ` Christoph Hellwig
2007-03-08 17:57 ` Anton Blanchard
2007-03-08 18:04 ` H. Peter Anvin
2007-03-08 21:42 ` Anton Blanchard
2007-03-08 21:46 ` Anton Blanchard
2007-03-08 21:48 ` David Miller [this message]
2007-03-09 2:43 ` Anton Blanchard
2007-03-09 4:18 ` H. Peter Anvin
2007-03-09 4:27 ` David Miller
2007-03-09 4:31 ` H. Peter Anvin
2007-03-09 4:36 ` David Miller
2007-03-21 2:12 ` Anton Blanchard
2007-03-21 2:48 ` H. Peter Anvin
2007-03-08 22:22 ` H. Peter Anvin
2007-03-08 21:03 ` David Brown
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