linux-kernel - Re: warn on lookup_one_length/vfs_quota_on

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Message-ID: <20091112124238.GH14528@duck.suse.cz>
Date:	Thu, 12 Nov 2009 13:42:38 +0100
From:	Jan Kara <jack@...e.cz>
To:	Bastien ROUCARIES <roucaries.bastien@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, Jan Kara <jack@...e.cz>
Subject: Re: warn on lookup_one_length/vfs_quota_on_mount

  Hi,

On Thu 12-11-09 08:29:06, Bastien ROUCARIES wrote:
> I get the following warm on my reiserfs disk with quota enabled at
> boot (each boot) see
> http://www.kerneloops.org/raw.php?rawid=937752&msgid=
> *lookup_one_len
> ? lookup_one_len
> ? lookup_one_len
> ? warn_slowpath_common
> ? lookup_one_len
> ? vfs_quota_on_mount
> ? finish_unfinished
> ? reiserfs_remount
> ? __filemap_fdatawrite_range
> ? do_remount_sb
> ? do_mount
> ? sys_mount
> ? system_call_fastpath
> 
> But it seems a generic bug in the quota layer due to:
> http://www.kerneloops.org/oops.php?number=799645
> http://www.kerneloops.org/oops.php?number=700122
  OK, this shouldn't lead to any real bug (since we look them up during
filesystem mount or remount read-write when noone can mess with the root
directory). But it's probably good to silence the warning by proper locking
anyway. I'll do it. Thanks for the report!

								Honza

-- 
Jan Kara <jack@...e.cz>
SUSE Labs, CR
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