linux-kernel - Re: [PATCH v4 3/4] fat (exportfs): rebuild directory-inode if fat

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Message-ID: <CAKYAXd8xdb+t5ZTKtg0W7VjCuuJfYFDDFMwUZNRN8f8fcttDxQ@mail.gmail.com>
Date:	Sun, 14 Oct 2012 00:14:43 +0900
From:	Namjae Jeon <linkinjeon@...il.com>
To:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
Cc:	akpm@...ux-foundation.org, bfields@...ldses.org,
	viro@...iv.linux.org.uk, 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 v4 3/4] fat (exportfs): rebuild directory-inode if
 fat_dget() fails

2012/10/13 OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>:
> Namjae Jeon <linkinjeon@...il.com> writes:
>
>> 2012/10/13 OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>:
>>> Namjae Jeon <linkinjeon@...il.com> writes:
>>>
>>>> +     if (!fat_get_dotdot_entry(child_dir->d_inode, &dotdot_bh, &de)) {
>>>> +             parent_logstart = fat_get_start(sbi, de);
>>>>               parent_inode = fat_dget(sb, parent_logstart);
>>>> +             if (parent_inode || sbi->options.nfs != FAT_NFS_NOSTALE_RO)
>>>> +                     goto out;
>>>> +             if (!parent_logstart)
>>>> +                     /*logstart of dotdot entry is zero if
>>>> +                     * if the directory's parent is root
>>>> +                     */
>>>> +                     parent_inode = sb->s_root->d_inode;
>>>
>>> get_parent() should not be called for root dir, right?
>> Yes.
>
> Ah, actual question was - subdir of root can be passed to this? I guess
> it is possible...
Yes, you're right.

Thanks.
> --
> OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
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