linux-ext4 - Re: [PATCH] [RFC] remove ext3 inode from orphan list when link and unlink race

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Message-ID: <20070117224304.GM5236@schatzie.adilger.int>
Date:	Wed, 17 Jan 2007 15:43:04 -0700
From:	Andreas Dilger <adilger@...sterfs.com>
To:	Eric Sandeen <sandeen@...hat.com>
Cc:	ext4 development <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH] [RFC] remove ext3 inode from orphan list when link and unlink race

On Jan 12, 2007  14:45 -0600, Eric Sandeen wrote:
> p.s. ext3_inc_count and ext3_dec_count seem misnamed, have an unused
> arg, and are very infrequently called.  I'll probably submit a patch
> to just put the single line of code into the caller, too.

I use those functions in the > 32000 subdirs patch to handle the case
where a directory overflows the i_nlinks counter and needs to be set
to have i_nlinks = 1.

Patch was posted previously, but rejected because there is a potential
for directory loss if the filesystem is mounted on an older kernel
(i_nlinks == 1, subdir is removed, directory is truncated).  I need to
add an ROCOMPAT feature in order to handle this, but haven't gotten
around to doing it.

Cheers, Andreas
--
Andreas Dilger
Principal Software Engineer
Cluster File Systems, Inc.

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