Re: [PATCH] make growfs check device size limits too

[David Chinner <dgc@sgi.com>]

On Fri, Apr 27, 2007 at 09:45:20AM +1000, Nathan Scott wrote:
> On Thu, 2007-04-26 at 08:10 +0100, Christoph Hellwig wrote:
> > On Thu, Apr 26, 2007 at 04:30:14PM +1000, Nathan Scott wrote:
> > > On the mount path we check for a superblock that describes a filesystem
> > > to large for the running kernel to handle.  This catches the case of an
> > > attempt to mount a >16TB filesystem on i386 (where we are limited by the
> > > page->index size, for XFS metadata buffers in xfs_buf.c).
> > > 
> > > This patch makes similar checks on the growfs code paths for regular and
> > > realtime growth, else we can end up with filesystem corruption, it would
> > > seem (from #xfs chatter).  Untested patch follows; probably better to do
> > > this as a macro, in a header, and call that in each place...?
> > 
> > Yeah, the check should probably we in one place only.  Given that's it's
> > only used in slow pathes a function would probably do it.
> 
> Here's a revised version...

Added to my qa tree.

Cheers,

Dave.
-- 
Dave Chinner
Principal Engineer
SGI Australian Software Group