|From:||Linus Torvalds <torvalds-AT-linux-foundation.org>|
|To:||Borislav Petkov <bp-AT-alien8.de>|
|Subject:||Re: [PATCH -v2] rmap: make anon_vma_prepare link in all the anon_vmas of a mergeable VMA|
|Date:||Mon, 12 Apr 2010 15:11:53 -0700 (PDT)|
|Cc:||Johannes Weiner <hannes-AT-cmpxchg.org>, KOSAKI Motohiro <kosaki.motohiro-AT-jp.fujitsu.com>, Rik van Riel <riel-AT-redhat.com>, Andrew Morton <akpm-AT-linux-foundation.org>, Minchan Kim <minchan.kim-AT-gmail.com>, Linux Kernel Mailing List <linux-kernel-AT-vger.kernel.org>, Lee Schermerhorn <Lee.Schermerhorn-AT-hp.com>, Nick Piggin <npiggin-AT-suse.de>, Andrea Arcangeli <aarcange-AT-redhat.com>, Hugh Dickins <hugh.dickins-AT-tiscali.co.uk>, sgunderson-AT-bigfoot.com|
On Mon, 12 Apr 2010, Borislav Petkov wrote: > > > I have a new theory. And this new theory is completely different from all > > the other things we've been looking at. > > Yeah, because all starts with "I have a new theory..." :o) Hey, all my other theories made sense too.. They just didn't work. But as Edison said: I didn't fail, I just found three other ways to not fix your bug. > > The patch below is my largely mindless try at fixing this. It's untested. > > I'm not entirely sure that it actually works. But it makes some amount of > > conceptual sense. No? > > Linus, are you trying to give me a heart-attack? This sh*t just survived > 20(!) hibernation runs without a problem (well, there is this nagging > /sysfs lockdep warning) but apart from that, it survived! I even did my > all time best when hitting on it. Normally, it used to crap up on the > 6th cycle as latest. Now we're rock solid. And yes, there were something > like ~64Mb in the swap cache. > > Also, I have your verification stuff in addition to the 4 patches you > sent before. Not a single WARN_ONCE got triggered. So I have a gut > feeling that it is fixed but you never know with these beasts. Ok. That does sound very positive. Of course, last time you sounded positive, I had an email from you half an hour later that said "oh no, it oopsed again". So I'll take it with a bit of salt, but on the whole I'll be optimistic about it. Linus
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