Re: [EXT4 set 1][PATCH 1/2] Add noextents mount option

[Mingming Cao <cmm@us.ibm.com>]

On Tue, 2007-07-10 at 16:30 -0700, Andrew Morton wrote:
> On Sun, 01 Jul 2007 03:35:48 -0400
> Mingming Cao <cmm@us.ibm.com> wrote:
> 
> > Add a mount option to turn off extents.
> 
> Please update the changelog to describe the reason for making this change.
> 
> 

Sure, I will update the changelog, mainly this is for wide testing of
extents feature in ext4dev.

> > Signed-off-by: Mingming Cao <cmm@us.ibm.com>
> > ---
> > Index: linux-2.6.22-rc4/fs/ext4/super.c
> > ===================================================================
> > --- linux-2.6.22-rc4.orig/fs/ext4/super.c	2007-06-11 17:02:18.000000000 -0700
> > +++ linux-2.6.22-rc4/fs/ext4/super.c	2007-06-11 17:02:22.000000000 -0700
> > @@ -725,7 +725,7 @@
> >  	Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
> >  	Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota,
> >  	Opt_ignore, Opt_barrier, Opt_err, Opt_resize, Opt_usrquota,
> > -	Opt_grpquota, Opt_extents,
> > +	Opt_grpquota, Opt_extents, Opt_noextents,
> >  };
> >  
> >  static match_table_t tokens = {
> > @@ -776,6 +776,7 @@
> >  	{Opt_usrquota, "usrquota"},
> >  	{Opt_barrier, "barrier=%u"},
> >  	{Opt_extents, "extents"},
> > +	{Opt_noextents, "noextents"},
> >  	{Opt_err, NULL},
> >  	{Opt_resize, "resize"},
> >  };
> > @@ -1111,6 +1112,9 @@
> >  		case Opt_extents:
> >  			set_opt (sbi->s_mount_opt, EXTENTS);
> >  			break;
> > +		case Opt_noextents:
> > +			clear_opt (sbi->s_mount_opt, EXTENTS);
> > +			break;
> >  		default:
> >  			printk (KERN_ERR
> >  				"EXT4-fs: Unrecognized mount option \"%s\" "
> > 
> > 
> > -
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