From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262551AbVF2LPs (ORCPT ); Wed, 29 Jun 2005 07:15:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262554AbVF2LPs (ORCPT ); Wed, 29 Jun 2005 07:15:48 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:59347 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S262551AbVF2LPm (ORCPT ); Wed, 29 Jun 2005 07:15:42 -0400 Subject: Re: kmalloc without GFP_xxx? From: Arjan van de Ven To: Denis Vlasenko Cc: linux-kernel@vger.kernel.org In-Reply-To: <200506291402.18064.vda@ilport.com.ua> References: <200506291402.18064.vda@ilport.com.ua> Content-Type: text/plain Date: Wed, 29 Jun 2005 13:15:39 +0200 Message-Id: <1120043739.3196.32.camel@laptopd505.fenrus.org> Mime-Version: 1.0 X-Mailer: Evolution 2.2.2 (2.2.2-5) Content-Transfer-Encoding: 7bit X-Spam-Score: 3.7 (+++) X-Spam-Report: SpamAssassin version 2.63 on pentafluge.infradead.org summary: Content analysis details: (3.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 1.1 RCVD_IN_DSBL RBL: Received via a relay in list.dsbl.org [] 2.5 RCVD_IN_DYNABLOCK RBL: Sent directly from dynamic IP address [80.57.133.107 listed in dnsbl.sorbs.net] 0.1 RCVD_IN_SORBS RBL: SORBS: sender is listed in SORBS [80.57.133.107 listed in dnsbl.sorbs.net] X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2005-06-29 at 14:02 +0300, Denis Vlasenko wrote: > Hi, > It struck me that kernel actually can figure out whether it's okay > to sleep or not by looking at combination of (flags & __GFP_WAIT) > and ((in_atomic() || irqs_disabled()) as it already does this for > might_sleep() barfing: that is not enough. you could be holding a spinlock for example! (and no that doesn't set in_atomic() always)