Re: [PATCH] memcgroup: check and initialize page->cgroup inmemmap_init_zone

[KAMEZAWA Hiroyuki]

On Fri, 18 Apr 2008 12:32:56 +0900
KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> wrote:

> > Or perhaps that page was used and then later freed before we got to
> > memmap_init_zone() and was freed with a non-zero ->page_cgroup.  Which is
> > unlikely given that page.page_cgroup was only just added and is only
> > present if CONFIG_CGROUP_MEM_RES_CTLR.
> > 
> Hmm, I'll try his .config and see what happens.
> 
I reproduced the hang with his config and confirmed his fix works well.
But I can't find why...I'll dig a bit more.

Thanks,
-Kame

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