linux-kernel - Re: [RESEND/PATCH] ext[234]: Return -EIO not -ESTALE on directory traversal missing inode

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Date:	Sun, 15 Feb 2009 00:39:12 -0500
From:	Theodore Tso <tytso@....edu>
To:	Bryan Donlan <bdonlan@...il.com>
Cc:	linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org,
	sct@...hat.com, akpm@...ux-foundation.org, adilger@....com
Subject: Re: [RESEND/PATCH] ext[234]: Return -EIO not -ESTALE on directory
	traversal missing inode

On Sat, Feb 14, 2009 at 11:53:48PM -0500, Bryan Donlan wrote:
> > I'm dubious about unlikely() here; OTOH, penalizing the error case
> > seems reasonable.
> 
> I can leave it without the unlikely(), as it was before, but as far as
> I can tell, this should never happen under a non-corrupted, non-broken
> hardware filesystem, so it seems like a reasonable annotation to me.

You're right.  I was looking at the wrong place in the source, and
thought this could happen if the lookup failed; but yes, you're right,
this case can only happen if the filesystem is corrupted or there is
an I/O error.

						- Ted
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