linux-ext4 - RE: [PATCH V4 3/8] Cleancache: core ops functions and configuration

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Message-ID: <dbb9f012-c09a-438f-99d0-4fbc40428f58@default>
Date:	Mon, 30 Aug 2010 17:40:42 -0700 (PDT)
From:	Dan Magenheimer <dan.magenheimer@...cle.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Chris Mason <chris.mason@...cle.com>, viro@...iv.linux.org.uk,
	akpm@...ux-foundation.org, adilger@....com, tytso@....edu,
	mfasheh@...e.com, Joel Becker <joel.becker@...cle.com>,
	matthew@....cx, linux-btrfs@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-ext4@...r.kernel.org, ocfs2-devel@....oracle.com,
	linux-mm@...ck.org, ngupta@...are.org, JBeulich@...ell.com,
	Kurt Hackel <kurt.hackel@...cle.com>, npiggin@...nel.dk,
	Dave Mccracken <dave.mccracken@...cle.com>, riel@...hat.com,
	avi@...hat.com, Konrad Wilk <konrad.wilk@...cle.com>,
	mel@....ul.ie, yinghan@...gle.com, gthelen@...gle.com
Subject: RE: [PATCH V4 3/8] Cleancache: core ops functions and configuration

> > +#ifdef CONFIG_CLEANCACHE
> > +#define cleancache_enabled (cleancache_ops.init_fs)
> 
> Pointers can be used in a boolean context, but it would probably be
> cleaner to have this evaluate to a proper boolean type.  Also I'd
> probably go with an all-caps macro name rather than making it look like
> a variable.

OK, thanks, will fix.
 
> > +/* useful stats available in /sys/kernel/mm/cleancache */
> > +static unsigned long succ_gets;
> > +static unsigned long failed_gets;
> > +static unsigned long puts;
> > +static unsigned long flushes;
> 
> I'd probably give these very generic-sounding names some slightly
> unique
> prefix just to help out people looking at "nm" output or using ctags.
> 
> > +static int get_key(struct inode *inode, struct cleancache_filekey
> *key)
> 
> Ditto.

OK, will do.

Thanks for the feedback!
Dan
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