linux-kernel - Re: [PATCH 5/17] [LogFS] dir.c

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Message-ID: <20091123133214.GB18889@logfs.org>
Date:	Mon, 23 Nov 2009 14:32:15 +0100
From:	Jörn Engel <joern@...fs.org>
To:	Dan Carpenter <error27@...il.com>
Cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-mtd@...ts.infradead.org
Subject: Re: [PATCH 5/17] [LogFS] dir.c

On Mon, 23 November 2009 13:17:44 +0200, Dan Carpenter wrote:
> On Fri, Nov 20, 2009 at 08:37:29PM +0100, Joern Engel wrote:
> > +static int logfs_unlink(struct inode *dir, struct dentry *dentry)
> > +{
> > +	struct logfs_super *super = logfs_super(dir->i_sb);
> > +	struct inode *inode = dentry->d_inode;
> > +	struct logfs_transaction *ta;
> > +	struct page *page;
> > +	pgoff_t index;
> > +	int ret;
> > +
> > +	ta = kzalloc(sizeof(*ta), GFP_KERNEL);
> > +	if (!ta)
> > +		return -ENOMEM;
> > +
> > +	ta->state = UNLINK_1;
> > +	ta->ino = inode->i_ino;
> > +
> > +	inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME;
> > +
> > +	page = logfs_get_dd_page(dir, dentry);
> > +	if (!page)
> 
> kfree(ta);
> 
> > +		return -ENOENT;
> > +	if (IS_ERR(page))
> 
> kfree(ta);
> 
> > +		return PTR_ERR(page);

Ick!  The drunkard who wrote that code ought to get fired.  Thank you
for noticing, Dan.

Fixed in the git tree.  And maybe I should go look for similar cases.

Jörn

-- 
You can't tell where a program is going to spend its time. Bottlenecks
occur in surprising places, so don't try to second guess and put in a
speed hack until you've proven that's where the bottleneck is.
-- Rob Pike
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