linux-kernel - Re: [PATCH v5 7/8] fat (exportfs): rebuild directory-inode if fat

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Message-ID: <87k3sy17vk.fsf@devron.myhome.or.jp>
Date:	Tue, 04 Dec 2012 18:31:11 +0900
From:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
To:	Namjae Jeon <linkinjeon@...il.com>
Cc:	akpm@...ux-foundation.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Namjae Jeon <namjae.jeon@...sung.com>,
	Ravishankar N <ravi.n1@...sung.com>,
	Amit Sahrawat <a.sahrawat@...sung.com>
Subject: Re: [PATCH v5 7/8] fat (exportfs): rebuild directory-inode if fat_dget() fails

Namjae Jeon <linkinjeon@...il.com> writes:

> 2012/12/3, OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>:
>> Namjae Jeon <linkinjeon@...il.com> writes:
>>
>>> From: Namjae Jeon <namjae.jeon@...sung.com>
>>>
>>> This patch enables rebuilding of directory inodes which are not present
>>> in the cache.This is done by traversing the disk clusters to find the
>>> directory entry of the parent directory and using its i_pos to build the
>>> inode.
>>> Do this only if the "nostale_ro" nfs mount option is specified.
>>
>> This became much better than before. However, we have to consolidate the
>> code with fat_search_long() finally.
>>
>> E.g. this version is having the issue already fixed. If there is
>> corruption in fat cluster-chain, it lead to infinite
>> loop. fat_get_cluster() checks infinite loop by limit.
> since, the focus this time was for NFS functionality for FAT (removing
> ESTALE error). The changes were made in that context.
>
> Later, we can make the changes as part of code reorganizing which can
> be controlled via. Separate patches which do not have any impact on
> default functionality and verification can be carried out in that
> scope.

Right. But non-production code shouldn't go into linus tree. I meant, we
can test this patch series, but not yet production quality.
-- 
OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
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