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

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Date:	Tue, 7 Nov 2006 14:20:12 -0700
From:	Matthew Wilcox <matthew@....cx>
To:	Jeff Layton <jlayton@...hat.com>
Cc:	J?rn Engel <joern@...nheim.fh-wedel.de>,
	Eric Sandeen <sandeen@...hat.com>,
	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 Tue, Nov 07, 2006 at 04:13:00PM -0500, Jeff Layton wrote:
> +	/* ino must not collide with any ino assigned in the loop below. Set
> +	   it to the highest possible inode number */
> +	inode->i_ino = (1 << (sizeof(s->s_lastino) * 8)) - 1;

This really isn't a good idiom to be using; GCC now takes this to mean
"I can reformat your hard drive because you did something outside the
spec".

Try instead:
+	inode->i_ino = -1;

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