linux-kernel - Re: [PATCH] make last_inode counter in new_inode 32-bit on kernels that offer x86 compatability

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Date:	Mon, 06 Nov 2006 13:31:14 -0500
From:	Jeff Layton <jlayton@...hat.com>
To:	Matthew Wilcox <matthew@....cx>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] make last_inode counter in new_inode 32-bit on kernels
	that offer x86 compatability

On Mon, 2006-11-06 at 11:22 -0700, Matthew Wilcox wrote:
> On Mon, Nov 06, 2006 at 01:12:05PM -0500, Jeff Layton wrote:
> > The attached patch remedies this by making the last_inode counter be an
> > unsigned int on kernels that have ia32 compatability mode enabled.
> 
> ... and this only happens on ia64/x86_64 kernels, not sparc64, ppc64,
> s390x, parisc64 or mips64?
> 

Yeah, that was my big question. I'd only seen this on ia32 compatability
modes, but clearly its a problem where unsigned long is a different size
between a 64-bit kernel and its 32-bit compatability mode.

I'll have a look at CONFIG_COMPAT and likely respin.

Thanks,
Jeff


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