From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 6F476B7D2B for ; Wed, 28 Apr 2010 14:11:16 +1000 (EST) Subject: Re: [patch 1/1] powerpc: add rcu_read_lock() to gup_fast() implementation From: Benjamin Herrenschmidt To: Nick Piggin In-Reply-To: <20100428032931.GE5683@laptop> References: <201004272110.o3RLAl7P019943@imap1.linux-foundation.org> <20100428032931.GE5683@laptop> Content-Type: text/plain; charset="UTF-8" Date: Wed, 28 Apr 2010 14:10:58 +1000 Message-ID: <1272427858.24542.60.camel@pasglop> Mime-Version: 1.0 Cc: riel@redhat.com, linuxppc-dev@ozlabs.org, akpm@linux-foundation.org, paulmck@linux.vnet.ibm.com, a.p.zijlstra@chello.nl List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Wed, 2010-04-28 at 13:29 +1000, Nick Piggin wrote: > I think I nacked this because the rest of the powerpc code also > assumes irq disables provide an rcu critical section. The plan was > to convert powerpc pagetable code to use call_rcu_sched. Right, on my todo list. Cheers, Ben.