Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751476AbdIMWJH (ORCPT ); Wed, 13 Sep 2017 18:09:07 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:48836 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751128AbdIMWJG (ORCPT ); Wed, 13 Sep 2017 18:09:06 -0400 Date: Wed, 13 Sep 2017 15:09:04 -0700 From: Andrew Morton To: Sherry Yang Cc: linux-kernel@vger.kernel.org, tkjos@google.com, maco@google.com, arve@android.com, gregkh@linuxfoundation.org, Ingo Molnar , Michal Hocko , Vlastimil Babka , David Rientjes , Andrea Arcangeli , Peter Zijlstra , Thomas Gleixner , Andy Lutomirski , Oleg Nesterov , Hoeun Ryu , Christoph Lameter , Vegard Nossum , Frederic Weisbecker Subject: Re: [PATCH] mm: Restore mmput_async Message-Id: <20170913150904.90a37a966a04ea394a2c3d9b@linux-foundation.org> In-Reply-To: <20170913215932.86846-1-sherryy@android.com> References: <20170908223934.67442-1-sherryy@android.com> <20170913215932.86846-1-sherryy@android.com> X-Mailer: Sylpheed 3.4.1 (GTK+ 2.24.23; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 557 Lines: 12 On Wed, 13 Sep 2017 17:59:27 -0400 Sherry Yang wrote: > Restore asynchronous mmput, allowing mmput_async to be called > from an atomic context in Android binder shrinker callback. > > mmput_async was initially introduced in ec8d7c14e > ("mm, oom_reaper: do not mmput synchronously from the > oom reaper context"), and was removed in 212925802 > ("mm: oom: let oom_reap_task and exit_mmap run concurrently") Presumably there's a patch somewhere which adds a call to mmput_async() into drivers/android/binder.c? Where is that patch?