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Date: Mon, 26 Aug 2013 13:46:05 -0700 From: Linus Torvalds <torvalds@...ux-foundation.org> To: Dave Jones <davej@...hat.com>, Hillf Danton <dhillf@...il.com>, Linux-MM <linux-mm@...ck.org>, Linux Kernel <linux-kernel@...r.kernel.org>, Hugh Dickins <hughd@...gle.com> Subject: Re: unused swap offset / bad page map. On Mon, Aug 26, 2013 at 1:15 PM, Linus Torvalds <torvalds@...ux-foundation.org> wrote: > > So I'm almost likely to think that we are more likely to have > something wrong in the messy magical special cases. Of course, the good news would be if it actually ends up being the soft-dirty stuff, and bisection hits something recent. So maybe I'm overly pessimistic. That messy swap_map[] code really _is_ messy, but at the same time it should also be pretty well-tested. I don't think it's been touched in years. That said, google does find "swap_free: Unused swap offset entry" reports from over the years. Most of them seem to be single-bit errors, though (ie when the entry is 00000100 or similar I'm more inclined to blame a bit error - in contrast your values look like "real" swap entries). Linus -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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