From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk0-f174.google.com (mail-qk0-f174.google.com [209.85.220.174]) by kanga.kvack.org (Postfix) with ESMTP id 067D982F64 for ; Thu, 22 Oct 2015 09:39:14 -0400 (EDT) Received: by qkfm62 with SMTP id m62so53378420qkf.1 for ; Thu, 22 Oct 2015 06:39:13 -0700 (PDT) Received: from resqmta-ch2-07v.sys.comcast.net (resqmta-ch2-07v.sys.comcast.net. [2001:558:fe21:29:69:252:207:39]) by mx.google.com with ESMTPS id d139si13261668qhc.110.2015.10.22.06.39.13 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Thu, 22 Oct 2015 06:39:13 -0700 (PDT) Date: Thu, 22 Oct 2015 08:39:11 -0500 (CDT) From: Christoph Lameter Subject: Re: [PATCH] mm,vmscan: Use accurate values for zone_reclaimable() checks In-Reply-To: <201510222037.ACH86458.OFOLFtQFOHJSVM@I-love.SAKURA.ne.jp> Message-ID: References: <20151021143337.GD8805@dhcp22.suse.cz> <20151021145505.GE8805@dhcp22.suse.cz> <201510222037.ACH86458.OFOLFtQFOHJSVM@I-love.SAKURA.ne.jp> Content-Type: text/plain; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Tejun Heo Cc: Tetsuo Handa , mhocko@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, David Rientjes , oleg@redhat.com, kwalker@redhat.com, akpm@linux-foundation.org, hannes@cmpxchg.org, vdavydov@parallels.com, skozina@redhat.com, mgorman@suse.de, riel@redhat.com On Thu, 22 Oct 2015, Tetsuo Handa wrote: > The problem would be that the "struct task_struct" to execute vmstat_update > job does not exist, and will not be able to create one on demand because we > are stuck at __GFP_WAIT allocation. Therefore adding a dedicated kernel > thread for vmstat_update job would work. But ... Yuck. Can someone please get this major screwup out of the work queue subsystem? Tejun? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org