From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 26 Jun 2002 20:57:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 26 Jun 2002 20:57:42 -0400 Received: from holomorphy.com ([66.224.33.161]:52692 "EHLO holomorphy") by vger.kernel.org with ESMTP id ; Wed, 26 Jun 2002 20:57:42 -0400 Date: Wed, 26 Jun 2002 17:56:50 -0700 From: William Lee Irwin III To: Amos Waterland Cc: linux-kernel@vger.kernel.org, Tom Gall , bcrl@redhat.com Subject: Re: O_ASYNC question Message-ID: <20020627005650.GN22961@holomorphy.com> Mail-Followup-To: William Lee Irwin III , Amos Waterland , linux-kernel@vger.kernel.org, Tom Gall , bcrl@redhat.com References: <20020625113052.A7510@kvasir.austin.ibm.com> <20020626211122.GL22961@holomorphy.com> <20020626163755.A10713@kvasir.austin.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Description: brief message Content-Disposition: inline In-Reply-To: <20020626163755.A10713@kvasir.austin.ibm.com> User-Agent: Mutt/1.3.25i Organization: The Domain of Holomorphy Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 26, 2002 at 04:37:55PM -0500, Amos Waterland wrote: > The reason that I was interested is that this behavior, if implemented > for all fd types, would be useful for a scalable user-space > implementation of POSIX aio. Linux implements SIGIO for tty's and sockets only. On Wed, Jun 26, 2002 at 04:37:55PM -0500, Amos Waterland wrote: > When you say that it is 'not done for files', does that mean that it is > not done by design, and no plans exist to implement it for files > (perhaps because completion notification is fundamentally different than > readiness notification?), or that the work just has yet to be done? > Thanks. It is not done by design. Future plans for async I/O implementations do not appear to involve the SIGIO mechanism. Cheers, Bill