linux-kernel - Re: [PATCH] f2fs: fix to stop recovering dot dentries in a readonly fs

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Date:	Tue, 29 Dec 2015 16:44:28 -0800
From:	Jaegeuk Kim <jaegeuk@...nel.org>
To:	Chao Yu <chao2.yu@...sung.com>
Cc:	linux-f2fs-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] f2fs: fix to stop recovering dot dentries in a readonly
 fs

Hi Chao,

On Tue, Dec 29, 2015 at 02:26:53PM +0800, Chao Yu wrote:
> Hi Jaegeuk,
> 
> > -----Original Message-----
> > From: Jaegeuk Kim [mailto:jaegeuk@...nel.org]
> > Sent: Tuesday, December 29, 2015 6:54 AM
> > To: Chao Yu
> > Cc: linux-f2fs-devel@...ts.sourceforge.net; linux-kernel@...r.kernel.org
> > Subject: Re: [PATCH] f2fs: fix to stop recovering dot dentries in a readonly fs
> > 
> > Hi Chao,
> > 
> > On Mon, Dec 28, 2015 at 06:12:45PM +0800, Chao Yu wrote:
> > > If filesystem is readonly, don't recover inline dot inode.
> > >
> > > Signed-off-by: Chao Yu <chao2.yu@...sung.com>
> > > ---
> > >  fs/f2fs/namei.c | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > >
> > > diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
> > > index 5cc4128..b4a5836 100644
> > > --- a/fs/f2fs/namei.c
> > > +++ b/fs/f2fs/namei.c
> > > @@ -269,7 +269,7 @@ static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
> > >  	if (IS_ERR(inode))
> > >  		return ERR_CAST(inode);
> > >
> > > -	if (f2fs_has_inline_dots(inode)) {
> > > +	if (f2fs_has_inline_dots(inode) && !f2fs_readonly(dir->i_sb)) {
> > 
> > We need to return -EROFS if f2fs is readonly?
> 
> In a readonly mountpoint, we should still allow user to stat file/dir in
> directory structure, rather than returning -EROFS when trying to recover,
> Right?

As you suggested, we'd better remain some kernel messages. ;)

Thanks,

> 
> Thanks,
> 
> > 
> > Thanks,
> > 
> > >  		err = __recover_dot_dentries(inode, dir->i_ino);
> > >  		if (err)
> > >  			goto err_out;
> > > --
> > > 2.6.3
> > >
--
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