linux-ext4 - Re: [PATCH] ext4: ext4

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Message-ID: <20120926141417.GA3485@andromeda.usersys.redhat.com>
Date:	Wed, 26 Sep 2012 11:14:17 -0300
From:	Carlos Maiolino <cmaiolino@...hat.com>
To:	linux-ext4@...r.kernel.org
Subject: Re: [PATCH] ext4: ext4_bread usage audit

On Tue, Sep 25, 2012 at 10:48:17PM -0500, Eric Sandeen wrote:
> On 9/25/12 10:42 PM, Theodore Ts'o wrote:
> > On Mon, Sep 24, 2012 at 03:41:40PM -0300, Carlos Maiolino wrote:
> >>
> >> Some ext4_bread callers do not needed any changes either because they already
> >> had its own hole detector paths or because these are deprecaded (like
> >> dx_show_entries)
> > 
> > BTW, dx_show entries isn't really deprecated; is debugging code which
> > is usually not compiled in, but it does get used from time to time by
> > developers who are debugging the directory hash tree code...
> > 
> > So having it show the holes by printing a note that there _was_ a
> > whole is probably a good thing from a debugging point of view...
> 
> I think what Carlos meant is that there are no callers in the tree...
> so even with debug options, it's not used.  It takes a custom patch...
> Does it still work? :)
> 
Yeah, that's what I meant, no callers of dx_show_entries() even with debug
enabled.

In regards to the coding style of if conditionals, I just followed the coding
style of most places in the code, I also changed some of the if conditionals to
match the rest of the code. i.e.:

if(!(bh = ext4_bread())) {
	do_something();
}

if you take a look at the code, most if conditionals regarding the calls to
ext4_bread() are in the above coding style. I just followed it, but, I'm not
against change that to another one, but agree the above looks better and save
some code lines
> -Eric
> 
> >       	 	    	       - Ted
> > --
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> > 
> 
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-- 
--Carlos
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