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Date: Thu, 23 May 2013 07:45:09 -0700
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Subject: Re: [PATCH] mm: fix up a spurious page fault whenever it happens
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Stanislav Meduna <stano@meduna.org>
Cc: Rik van Riel <riel@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
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On Thu, May 23, 2013 at 1:07 AM, Stanislav Meduna <stano@meduna.org> wrote:
>
> It did not crash overnight, but it also does not show any
> minor fault counted for the threads

Page faults that don't cause us to map a page (ie a spurious one, or
one that just updates dirty/accessed bits) don't show up as even minor
faults. Thing of the major/minor as "mapping activity" not a page
fault count.

So if this is due to some stuck TLB entry, that wouldn't show up anyway.

                    Linus