linux-ext4 - Re: [PATCHv4 01/17] VFS: introduce helpers for the s

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Message-Id: <1275120710.2668.20.camel@localhost.localdomain>
Date:	Sat, 29 May 2010 11:11:50 +0300
From:	Artem Bityutskiy <dedekind1@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Al Viro <viro@...IV.linux.org.uk>,
	LKML <linux-kernel@...r.kernel.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	linux-fsdevel@...r.kernel.org,
	Roman Zippel <zippel@...ux-m68k.org>,
	"Tigran A. Aivazian" <tigran@...azian.fsnet.co.uk>,
	Chris Mason <chris.mason@...cle.com>,
	Boaz Harrosh <bharrosh@...asas.com>,
	linux-ext4@...r.kernel.org, Theodore Ts'o <tytso@....edu>,
	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>,
	David Woodhouse <dwmw2@...radead.org>,
	reiserfs-devel@...r.kernel.org, Jan Kara <jack@...e.cz>,
	Evgeniy Dushistov <dushistov@...l.ru>
Subject: Re: [PATCHv4 01/17] VFS: introduce helpers for the s_dirty flag

On Fri, 2010-05-28 at 14:17 -0700, Andrew Morton wrote:
> On Fri, 28 May 2010 22:14:32 +0100
> Al Viro <viro@...IV.linux.org.uk> wrote:
> 
> > On Fri, May 28, 2010 at 01:23:18PM -0700, Andrew Morton wrote:
> > 
> > > A more conventional and superior naming scheme is
> > > subsystemid_specific_function_identifier().  eg, bio_add_page() instead
> > > of add_page_to_bio().
> > > 
> > > So these want to be sb_mark_dirty(), etc.
> > > 
> > > Being very old code written by very yound people, the VFS kinda ignores
> > > that convention, but it doesn't hurt to use it for new code.
> > > 
> > > Feel free to ignore me if that's too much of a PITA ;)
> > 
> > The real issue is that it's almost certainly an overdesign.  Let's
> > get rid of the bogus uses first and figure out what's happening in
> > what remains, OK?
> 
> That would be good.

Yes, I just mechanically introduced the wrappers to all FS-es. But as
per Al's request, I am going to try looking at how FSwe use it and
validate the usage. It'll take some time as this stuff is my background
task. Will see.

> > I have no problems with doing such wrappers, but if we touch every
> > place using ->s_dirt anyway, let's at least take a good look at them.
> 
> When adding wrappers we should also rename ->s_dirt (say, to __s_dirt)
> to catch out any unconverted code.

Right, I did this in the following patch:
	[PATCHv4 16/17] VFS: rename s_dirt to s_dirty

I thought that adding a leading '_' is not very neat, so added 'y' at
the end.

-- 
Best Regards,
Artem Bityutskiy (Артём Битюцкий)

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