linux-kernel - Re: [PATCH] cgroup/kmemcheck: No need to annotate base anymore

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Message-ID: <1311702244.3526.100.camel@gandalf.stny.rr.com>
Date:	Tue, 26 Jul 2011 13:44:04 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Michal Hocko <mhocko@...e.cz>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Johannes Weiner <hannes@...xchg.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Daisuke Nishimura <nishimura@....nes.nec.co.jp>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Minchan Kim <minchan.kim@...il.com>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Dave Hansen <dave@...ux.vnet.ibm.com>,
	Catalin Marinas <catalin.marinas@....com>
Subject: Re: [PATCH] cgroup/kmemcheck: No need to annotate base anymore

On Tue, 2011-07-26 at 13:41 -0400, Steven Rostedt wrote:

> > We can still fall back to vmalloc allocation (even though it is really
> > not probable that alloc_pages_exact_nid would fail that early).
> > Is vmalloc a problem here? (sorry I am not familiar with kmemleak
> > internals) The original code didn't distinguish kmalloc vs. vmalloc.
> > 
> 
> Good question. I forgot to add the maintainer of kmemleak to the Cc
> list. (fixed here).

Depending on the answer, I suspect that the result will be to keep the
not_leak call, and just add a call directly to kmemleak_alloc() in the
page_alloc() side.

I'll have a patch ready on hand when we find out :)

-- Steve


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