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Date: Fri, 17 Feb 2012 23:14:01 -0800 (PST) From: Hugh Dickins <hughd@...gle.com> To: Konstantin Khlebnikov <khlebnikov@...nvz.org> cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>, Ying Han <yinghan@...gle.com>, "linux-mm@...ck.org" <linux-mm@...ck.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: [PATCH RFC 00/15] mm: memory book keeping and lru_lock splitting On Sat, 18 Feb 2012, Konstantin Khlebnikov wrote: > Hugh Dickins wrote: > > On Thu, 16 Feb 2012, Hugh Dickins wrote: > > > > > > Yours are not the only patches I was testing in that tree, I tried to > > > gather several other series which I should be reviewing if I ever have > > > time: Kamezawa-san's page cgroup diet 6, Xiao Guangrong's 4 prio_tree > > > cleanups, your 3 radix_tree changes, your 6 shmem changes, your 4 memcg > > > miscellaneous, and then your 15 books. > > > > > > The tree before your final 15 did well under pressure, until I tried to > > > rmdir one of the cgroups afterwards: then it crashed nastily, I'll have > > > to bisect into that, probably either Kamezawa's or your memcg changes. > > > > So far I haven't succeeded in reproducing that at all: it was real, > > but obviously harder to get than I assumed - indeed, no good reason > > to associate it with any of those patches, might even be in 3.3-rc. > > > > It did involve a NULL pointer dereference in mem_cgroup_page_lruvec(), > > somewhere below compact_zone() - but repercussions were causing the > > stacktrace to scroll offscreen, so I didn't get good details. > > There some stupid bugs in my v1 patchset, it shouldn't works at all. > I did not expect that someone will try to use it. I sent it just to discuss. Yes, but as I said, that bug appeared before I put your patchset (the 15) on. Hugh -- 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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