linux-kernel - Re: XFS WARN_ON in xfs_vm

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Message-ID: <20140613141925.GA24199@redhat.com>
Date:	Fri, 13 Jun 2014 10:19:25 -0400
From:	Dave Jones <davej@...hat.com>
To:	Dave Chinner <david@...morbit.com>
Cc:	xfs@....sgi.com, Linux Kernel <linux-kernel@...r.kernel.org>,
	linux-mm@...ck.org
Subject: Re: XFS WARN_ON in xfs_vm_writepage

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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