Return-Path: linux-nfs-owner@vger.kernel.org Received: from mx1.redhat.com ([209.132.183.28]:31435 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932760Ab2C1U11 (ORCPT ); Wed, 28 Mar 2012 16:27:27 -0400 Date: Wed, 28 Mar 2012 22:19:04 +0200 From: Oleg Nesterov To: Andrew Morton Cc: Boaz Harrosh , Tetsuo Handa , linux-security-module@vger.kernel.org, Ingo Molnar , Peter Zijlstra , Paul Turner , Thomas Gleixner , linux-fsdevel , linux-kernel , NFS list , Trond Myklebust , "Bhamare, Sachin" , David Howells , Eric Paris , "Srivatsa S. Bhat" , Kay Sievers , James Morris , "Eric W. Biederman" , Greg Kroah-Hartman , "Rafael J. Wysocki" , "keyrings@linux-nfs.org" Subject: Re: [PATCHSET 0/6 version 2] kmod: Optional timeout on the wait in call_usermodehelper_exec Message-ID: <20120328201904.GA4517@redhat.com> References: <4F691059.30405@panasas.com> <4F711EA2.4030608@panasas.com> <20120327140709.60ab7bda.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20120327140709.60ab7bda.akpm@linux-foundation.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: On 03/27, Andrew Morton wrote: > > IOW, please explain at some length why you need this. Do you think > that there are existing call sites which can usefully use this feature? > Do you expect that new callers are likely to need this? etcetera. Cough. Can't resist... Could you also explain why http://marc.info/?l=linux-nfs&m=133252084301205 can't work? To clarify, I am just curious, I am not arguing. I am asking because if UMH_WAIT_PROC(timeout) fails with -ETIMEDOUT, then perhaps it makes sense to not "leak" the user-space process servicing the kernel request we were waiting for. Oleg.