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Date: Mon, 30 Jul 2012 15:50:04 +0300 From: "Kirill A. Shutemov" <kirill@...temov.name> To: Glauber Costa <glommer@...allels.com> Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>, Christoph Lameter <cl@...ux.com>, David Rientjes <rientjes@...gle.com>, Pekka Enberg <penberg@...nel.org>, Greg Thelen <gthelen@...gle.com>, Johannes Weiner <hannes@...xchg.org>, Michal Hocko <mhocko@...e.cz>, Frederic Weisbecker <fweisbec@...il.com>, devel@...nvz.org, cgroups@...r.kernel.org, Pekka Enberg <penberg@...helsinki.fi>, Kamezawa Hiroyuki <kamezawa.hiroyu@...fujitsu.com>, Suleiman Souhlal <suleiman@...gle.com> Subject: Re: [PATCH 04/10] memcg: skip memcg kmem allocations in specified code regions On Wed, Jul 25, 2012 at 06:38:15PM +0400, Glauber Costa wrote: > This patch creates a mechanism that skip memcg allocations during > certain pieces of our core code. It basically works in the same way > as preempt_disable()/preempt_enable(): By marking a region under > which all allocations will be accounted to the root memcg. > > We need this to prevent races in early cache creation, when we > allocate data using caches that are not necessarily created already. Why not a GFP_* flag? -- Kirill A. Shutemov -- 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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