From: Dan Carpenter <dan.carpenter@oracle.com>
To: walter harms <wharms@bfs.de>
Cc: kernel-janitors@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net
Subject: Re: [patch] f2fs: dereferencing an ERR_PTR
Date: Sun, 26 May 2013 20:41:16 +0000 [thread overview]
Message-ID: <20130526204116.GE23932@mwanda> (raw)
In-Reply-To: <51A224AB.8010209@bfs.de>
On Sun, May 26, 2013 at 05:05:15PM +0200, walter harms wrote:
>
>
> Am 23.05.2013 12:02, schrieb Dan Carpenter:
> > There is an error path where "dir" is an ERR_PTR.
> >
> > Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> >
> > diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
> > index 5148d90..921aede 100644
> > --- a/fs/f2fs/recovery.c
> > +++ b/fs/f2fs/recovery.c
> > @@ -71,7 +71,8 @@ static int recover_dentry(struct page *ipage, struct inode *inode)
> > out:
> > f2fs_msg(inode->i_sb, KERN_NOTICE, "recover_inode and its dentry: "
> > "ino = %x, name = %s, dir = %lx, err = %d",
> > - ino_of_node(ipage), raw_inode->i_name, dir->i_ino, err);
> > + ino_of_node(ipage), raw_inode->i_name,
> > + IS_ERR(dir) ? 0 : dir->i_ino, err);
> > return err;
> > }
> >
> I am not an expert on this matter so a simple question:
> dir->i_ino=0 is not valid ?
That is a valid question. The trick is that we also print the err
code so error conditions should be pretty obvious.
regards,
dan carpenter
WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: walter harms <wharms@bfs.de>
Cc: kernel-janitors@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net
Subject: Re: [f2fs-dev] [patch] f2fs: dereferencing an ERR_PTR
Date: Sun, 26 May 2013 23:41:16 +0300 [thread overview]
Message-ID: <20130526204116.GE23932@mwanda> (raw)
In-Reply-To: <51A224AB.8010209@bfs.de>
On Sun, May 26, 2013 at 05:05:15PM +0200, walter harms wrote:
>
>
> Am 23.05.2013 12:02, schrieb Dan Carpenter:
> > There is an error path where "dir" is an ERR_PTR.
> >
> > Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> >
> > diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
> > index 5148d90..921aede 100644
> > --- a/fs/f2fs/recovery.c
> > +++ b/fs/f2fs/recovery.c
> > @@ -71,7 +71,8 @@ static int recover_dentry(struct page *ipage, struct inode *inode)
> > out:
> > f2fs_msg(inode->i_sb, KERN_NOTICE, "recover_inode and its dentry: "
> > "ino = %x, name = %s, dir = %lx, err = %d",
> > - ino_of_node(ipage), raw_inode->i_name, dir->i_ino, err);
> > + ino_of_node(ipage), raw_inode->i_name,
> > + IS_ERR(dir) ? 0 : dir->i_ino, err);
> > return err;
> > }
> >
> I am not an expert on this matter so a simple question:
> dir->i_ino==0 is not valid ?
That is a valid question. The trick is that we also print the err
code so error conditions should be pretty obvious.
regards,
dan carpenter
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next prev parent reply other threads:[~2013-05-26 20:41 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-23 10:02 [patch] f2fs: dereferencing an ERR_PTR Dan Carpenter
2013-05-23 10:02 ` [f2fs-dev] " Dan Carpenter
2013-05-23 10:12 ` Dan Carpenter
2013-05-23 10:12 ` [f2fs-dev] " Dan Carpenter
2013-05-24 3:46 ` Jaegeuk Kim
2013-05-24 3:46 ` [f2fs-dev] " Jaegeuk Kim
2013-05-24 11:23 ` Dan Carpenter
2013-05-24 11:23 ` [f2fs-dev] " Dan Carpenter
2013-05-24 11:32 ` Jaegeuk Kim
2013-05-24 11:32 ` [f2fs-dev] " Jaegeuk Kim
2013-05-26 15:05 ` walter harms
2013-05-26 15:05 ` [f2fs-dev] " walter harms
2013-05-26 20:41 ` Dan Carpenter [this message]
2013-05-26 20:41 ` Dan Carpenter
2013-05-27 7:13 ` walter harms
2013-05-27 7:13 ` [f2fs-dev] " walter harms
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