Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755494AbYFXT1H (ORCPT ); Tue, 24 Jun 2008 15:27:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752776AbYFXT0z (ORCPT ); Tue, 24 Jun 2008 15:26:55 -0400 Received: from fxip-0047f.externet.hu ([88.209.222.127]:47092 "EHLO pomaz-ex.szeredi.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752717AbYFXT0y (ORCPT ); Tue, 24 Jun 2008 15:26:54 -0400 To: torvalds@linux-foundation.org CC: miklos@szeredi.hu, jens.axboe@oracle.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org In-reply-to: (message from Miklos Szeredi on Tue, 24 Jun 2008 21:24:21 +0200) Subject: Re: [rfc patch 3/4] splice: remove confirm from pipe_buf_operations References: <20080621154607.154640724@szeredi.hu> <20080621154726.494538562@szeredi.hu> <20080624080440.GJ20851@kernel.dk> <20080624111913.GP20851@kernel.dk> Message-Id: From: Miklos Szeredi Date: Tue, 24 Jun 2008 21:26:44 +0200 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 767 Lines: 19 > > > > > > Let's start with page_cache_pipe_buf_confirm(). How should we deal > > > with finding an invalidated page (!PageUptodate(page) && > > > !page->mapping)? > > > > I suspect we just have to use it. After all, it was valid when the read > > was done. The fact that it got invalidated later is kind of immaterial. > > Right. But what if it's invalidated *before* becoming uptodate (if > you'd read my mail further, I discussed this). Please ignore, this can't happen of course due to page locking... Miklos -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/