Re: XFS WARN_ON in xfs_vm_writepage

From: Dave Jones
Date: Fri Jun 13 2014 - 10:19:51 EST


On Fri, Jun 13, 2014 at 04:26:45PM +1000, Dave Chinner wrote:

> > 970 if (WARN_ON_ONCE((current->flags & (PF_MEMALLOC|PF_KSWAPD)) ==
> > 971 PF_MEMALLOC))
>
> What were you running at the time? The XFS warning is there to
> indicate that memory reclaim is doing something it shouldn't (i.e.
> dirty page writeback from direct reclaim), so this is one for the mm
> folk to work out...

Trinity had driven the machine deeply into swap, and the oom killer was
kicking in pretty often. Then this happened.

Dave

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