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Re: [PATCH][for -mm] Fix and Enhancements for memory cgroup [1/6] fix refcnt race in charge/uncharge [message #21496 is a reply to message #21493]

Wed, 10 October 2007 00:34

KAMEZAWA Hiroyuki
Messages: 463
Registered: September 2006

Senior Member

On Wed, 10 Oct 2007 07:31:38 +0900 (JST)
yamamoto@valinux.co.jp (YAMAMOTO Takashi) wrote:
> > -		atomic_inc(&pc->ref_cnt);
> > -		goto done;
> > +		if (unlikely(!atomic_inc_not_zero(&pc->ref_cnt))) {
> > +			/* this page is under being uncharge ? */
> > +			unlock_page_cgroup(page);
> 
> cpu_relax() here?
> 
Ah, yes. there should be. I'll add.

Thanks,
-Kame

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[Message index]

		[PATCH][for -mm] Fix and Enhancements for memory cgroup [0/6] intro By: KAMEZAWA Hiroyuki on Tue, 09 October 2007 09:46
		[PATCH][for -mm] Fix and Enhancements for memory cgroup [1/6] fix refcnt race in charge/uncharge By: KAMEZAWA Hiroyuki on Tue, 09 October 2007 09:49
		Re: [PATCH][for -mm] Fix and Enhancements for memory cgroup [1/6] fix refcnt race in charge/uncharge By: Balbir Singh on Tue, 09 October 2007 10:38
		Re: [PATCH][for -mm] Fix and Enhancements for memory cgroup [1/6] fix refcnt race in charge/uncharge By: yamamoto on Tue, 09 October 2007 22:31
		Re: [PATCH][for -mm] Fix and Enhancements for memory cgroup [1/6] fix refcnt race in charge/uncharge By: KAMEZAWA Hiroyuki on Wed, 10 October 2007 00:34
		[PATCH][for -mm] Fix and Enhancements for memory cgroup [2/6] fix err handling in charging By: KAMEZAWA Hiroyuki on Tue, 09 October 2007 09:50
		Re: [PATCH][for -mm] Fix and Enhancements for memory cgroup [2/6] fix err handling in charging By: Balbir Singh on Tue, 09 October 2007 10:48
		[PATCH][for -mm] Fix and Enhancements for memory cgroup [4/6] avoid handling !LRU page in mem_cgrou By: KAMEZAWA Hiroyuki on Tue, 09 October 2007 09:53
		Re: [PATCH][for -mm] Fix and Enhancements for memory cgroup [4/6] avoid handling !LRU page in mem_c By: Balbir Singh on Tue, 09 October 2007 15:35
		[PATCH][for -mm] Fix and Enhancements for memory cgroup [5/6] memory cgroup and migration fix By: KAMEZAWA Hiroyuki on Tue, 09 October 2007 09:54
		Re: [PATCH][for -mm] Fix and Enhancements for memory cgroup [5/6] memory cgroup and migration fix By: Balbir Singh on Tue, 09 October 2007 16:26
		[PATCH][for -mm] Fix and Enhancements for memory cgroup [6/6] add force reclaim interface By: KAMEZAWA Hiroyuki on Tue, 09 October 2007 09:55
		Re: [PATCH][for -mm] Fix and Enhancements for memory cgroup [6/6] add force reclaim interface By: Balbir Singh on Tue, 09 October 2007 18:44
		Re: [PATCH][for -mm] Fix and Enhancements for memory cgroup [6/6] add force reclaim interface By: KAMEZAWA Hiroyuki on Wed, 10 October 2007 00:41
		[PATCH][for -mm] Fix and Enhancements for memory cgroup [3/6] add helper function for page_cgroup By: KAMEZAWA Hiroyuki on Tue, 09 October 2007 09:51
		Re: [PATCH][for -mm] Fix and Enhancements for memory cgroup [3/6] add helper function for page_cgrou By: Balbir Singh on Tue, 09 October 2007 11:09
		Re: [PATCH][for -mm] Fix and Enhancements for memory cgroup [3/6] add helper function for page_cgrou By: KAMEZAWA Hiroyuki on Tue, 09 October 2007 11:26
		Re: [PATCH][for -mm] Fix and Enhancements for memory cgroup [3/6] add helper function for page_cgrou By: KAMEZAWA Hiroyuki on Wed, 10 October 2007 00:38
		Re: [PATCH][for -mm] Fix and Enhancements for memory cgroup [0/6] intro By: Balbir Singh on Tue, 09 October 2007 10:30

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