cvs commit: src/sys/miscfs/union union.h union_subr.c union_vnops.c

[David Schultz]

On Wed, Jun 18, 2003, Dmitry Morozovsky wrote:
> On Wed, 18 Jun 2003, David Schultz wrote:
> 
> DS> das         2003/06/18 00:55:47 PDT
> DS>
> DS>   FreeBSD src repository
> DS>
> DS>   Modified files:        (Branch: RELENG_4)
> DS>     sys/miscfs/union     union.h union_subr.c union_vnops.c
> DS>   Log:
> DS>   MFC:
> DS>   Fix memory leak
> DS>   Add union_dircache_free()
> DS>   Add malloc types M_UNDCACHE and M_UNPATH
> DS>   Fix panic when unionfs is mounted atop another unionfs, style
> 
> Thanks David!
> 
> Side question: is this patch compatible and/or superceeds Matt's patch for
> synthetic vnodes?
> 
> >Date:      Thu, 14 Nov 2002 11:29:26 -0800 (PST)
> >From:      Matthew Dillon <dillon at apollo.backplane.com>
> >To:        "Cameron Grant" <gandalf at vilnya.demon.co.uk>, freebsd-hackers at freebsd.org
> >Subject:   Patch #6 (Re: Shared files within a jail)
> 
> (long URL)
> http://groups.google.com/groups?selm=200211141929.gAEJTQcl067196_apollo.backplane.com%40ns.sol.net&oe=UTF-8&output=gplain

The patch you refer to is completely orthogonal.  It tries to
solve a much deeper and harder problem, but it isn't a complete
solution.  Getting device aliasing right requires more time and
VFS-fu than I have right now, but I'll try to look into it one of
these days.