[PATCH 020/102] xfs: warn if direct reclaim tries to writeback pages

[Mel Gorman]

On Mon, Aug 27, 2012 at 02:17:42PM -0400, Christoph Hellwig wrote:
> On Thu, Aug 23, 2012 at 03:01:38PM +1000, Dave Chinner wrote:
> > From: Mel Gorman <mgorman at suse.de>
> > 
> > Upstream commit: 94054fa3fca1fd78db02cb3d68d5627120f0a1d4
> > 
> > Direct reclaim should never writeback pages.  For now, handle the
> > situation and warn about it.  Ultimately, this will be a BUG_ON.
> 
> Is this actually the case on 3.0-stable?
> 

No, it is not. AFAIK, 3.0-stable does not contain [ee72886d: mm: vmscan:
do not writeback filesystem pages in direct reclaim] which is the absolute
minimum required for commit [94054fa3: xfs: warn if direct reclaim tries
to writeback pages] to make sense.

-- 
Mel Gorman
SUSE Labs