linux-kernel - Re: [patch 2/6] vfs: pnode cleanup

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Date:	Wed, 19 Mar 2008 12:48:48 +0100
From:	Miklos Szeredi <miklos@...redi.hu>
To:	viro@...IV.linux.org.uk
CC:	miklos@...redi.hu, akpm@...ux-foundation.org, linuxram@...ibm.com,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [patch 2/6] vfs: pnode cleanup

> On Thu, Mar 13, 2008 at 10:26:43PM +0100, Miklos Szeredi wrote:
> > Move set_mnt_shared from pnode.h to pnode.c.  Change
> > CLEAR_MNT_SHARED() to clear_mnt_shared() function, and move to
> > pnode.c.
> 
> I don't see why these two are a cleanup, actually.

People don't like my cleanups :( sniff...

> > @@ -89,20 +100,18 @@ static int do_make_slave(struct vfsmount
> >  		list_for_each_entry(slave_mnt, &mnt->mnt_slave_list, mnt_slave)
> >  			slave_mnt->mnt_master = master;
> >  		list_move(&mnt->mnt_slave, &master->mnt_slave_list);
> > -		list_splice(&mnt->mnt_slave_list, master->mnt_slave_list.prev);
> > -		INIT_LIST_HEAD(&mnt->mnt_slave_list);
> > +		list_splice_init(&mnt->mnt_slave_list,
> > +				 master->mnt_slave_list.prev);
> 
> Umm...  OK.

Yeah, not much of an improvement.

> >  	} else {
> > -		struct list_head *p = &mnt->mnt_slave_list;
> > -		while (!list_empty(p)) {
> > -                        slave_mnt = list_first_entry(p,
> > +		while (!list_empty(&mnt->mnt_slave_list)) {
> > +			slave_mnt = list_first_entry(&mnt->mnt_slave_list,
> 
> How is that better?

I find it easier to read.  Renaming "p" to "slaves" would also have
been better.  Single letter variables are reserved for iterators in my
mind...

Miklos
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