Re: [RFC][PATCH 23/27] elevate write count over calls to vfs_rename()

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On Thu, 2006-06-08 at 13:23 +0200, Herbert Poetzl wrote:
> On Wed, Jun 07, 2006 at 05:10:36PM -0700, Dave Hansen wrote:
> > diff -puN fs/namei.c~elevate-writers-vfs_rename-part1 fs/namei.c
> > --- lxc/fs/namei.c~elevate-writers-vfs_rename-part1	2006-06-07 16:53:26.000000000 -0700
> > +++ lxc-dave/fs/namei.c	2006-06-07 16:53:26.000000000 -0700
> > @@ -2507,29 +2507,37 @@ static int do_rename(int olddfd, const c
> >  	if (error)
> >  		goto exit;
> >  
> > -	error = do_path_lookup(newdfd, newname, LOOKUP_PARENT, &newnd);
> > +	error = mnt_want_write(oldnd.mnt);
> >  	if (error)
> >  		goto exit1;
> 
> same here, I'd suspect it changes the return code 
> for the case where the 'files' reside on different
> mount points from -EXDEV and for the busy case
> from -EBUSY to -EROFS ....
> 
> don't get me wrong, I'm probably fine with those
> changes if they are consistant and do not depend
> on whether the inode is RO or the entire mnt point

I think I might be able to fix this one up a bit by changing the order
around.  I'll have a good look at it.

-- Dave

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