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Date: Wed, 6 Jan 2010 08:37:52 +0530 From: Balbir Singh <balbir@...ux.vnet.ibm.com> To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> Cc: Andrew Morton <akpm@...ux-foundation.org>, "linux-mm@...ck.org" <linux-mm@...ck.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: [PATCH -mm] Shared Page accounting for memory cgroup (v2) * KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> [2010-01-06 09:07:08]: > On Wed, 6 Jan 2010 00:22:26 +0530 > Balbir Singh <balbir@...ux.vnet.ibm.com> wrote: > > > Hi, All, > > > > No major changes from v1, except for the use of get_mm_rss(). > > Kamezawa-San felt that this can be done in user space and I responded > > to him with my concerns of doing it in user space. The thread > > can be found at http://thread.gmane.org/gmane.linux.kernel.mm/42367. > > > > If there are no major objections, can I ask for a merge into -mm. > > Andrew, the patches are against mmotm 10 December 2009, if there > > are some merge conflicts, please let me know, I can rebase after > > you release the next mmotm. > > > > The problem is that this isn't "shared" uasge but "considered to be shared" > usage. Okay ? > Could you give me your definition of "shared". From the mem cgroup perspective, total_rss (which is accumulated) subtracted from the count of pages in the LRU which are RSS and FILE_MAPPED is shared, no? I understand that some of the pages that might be shared, show up in our LRU and accounting. These are not treated as shared by our cgroup, but by other cgroups. > Then I don't want to provide this misleading value as "official report" from > the kernel. And this can be done in userland. > I explained some of the issues of doing this from user space, would you be OK if I called them "non-private" pages? -- Balbir -- 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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