linux-ext4 - Re: [PATCH] clear extents flag on inodes created in ext4

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Message-ID: <20080219164944.GB7177@skywalker>
Date:	Tue, 19 Feb 2008 22:19:44 +0530
From:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
To:	Eric Sandeen <sandeen@...hat.com>
Cc:	ext4 development <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH] clear extents flag on inodes created in ext4_mknod

On Tue, Feb 19, 2008 at 10:39:52AM -0600, Eric Sandeen wrote:
> Eric Sandeen wrote:
> > e2fsck doesn't expect to find char, block, fifo, or socket
> > files with the extent flag set, so clear that in ext4_mknod.
> > 
> > Signed-off-by: Eric Sandeen <sandeen@...hat.com>
> > ---
> > 
> > Index: linux-2.6.24/fs/ext4/namei.c
> > ===================================================================
> > --- linux-2.6.24.orig/fs/ext4/namei.c
> > +++ linux-2.6.24/fs/ext4/namei.c
> > @@ -1766,6 +1766,7 @@ retry:
> >  #ifdef CONFIG_EXT4DEV_FS_XATTR
> >  		inode->i_op = &ext4_special_inode_operations;
> >  #endif
> > +		EXT4_I(inode)->i_flags &= ~EXT4_EXTENTS_FL;
> >  		err = ext4_add_nondir(handle, dentry, inode);
> >  	}
> >  	ext4_journal_stop(handle);
> 
> now that I think about it; perhaps it would be better to put this logic
> into ext4_new_inode, rather than setting it by default and clearing it
> here... that way new_inode() has all the logic about whether or not a
> particular type of file is in extents format.
> 

How about enabling it only for directory and regular files rather than
enabling it globally and then disabling the flag for  symlink and device
files ?

-aneesh
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