From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#13149: 24.3.50; Emacs thinks file was changed outside Emacs, but it was not Date: Fri, 18 Jan 2013 09:49:31 +0200 Message-ID: <83d2x36id0.fsf@gnu.org> References: <6CDE13E3BCAA4AFAAB8BCE105C6ABF12@us.oracle.com> <874njs19zb.fsf@yandex.ru> <50F3935A.2090003@yandex.ru> <50F41CE7.60306@gmail.com> <50F44E6B.8090007@cs.ucla.edu> <50F484CB.6010905@gmail.com> <50F4FB0B.5070003@cs.ucla.edu> <50F5192B.602@yandex.ru> <50F5928A.9010009@cs.ucla.edu> <50F5CC3D.5090802@yandex.ru> <50F5CE65.9030002@cs.ucla.edu> <50F5D3F5.6050604@yandex.ru> <50F5DA58.3020404@cs.ucla.edu> <50F5E1C1.2040301@yandex.ru> <50F5E9DB.1030309@gmail.com> <50F64149.6010704@cs.ucla.edu> <50F7D358.9030100@gmail.com> <83txqf7n9o.fsf@gnu.org> <50F8CC6F.7000106@gmail.com> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1358495422 2360 80.91.229.3 (18 Jan 2013 07:50:22 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 18 Jan 2013 07:50:22 +0000 (UTC) Cc: 13149@debbugs.gnu.org, eggert@cs.ucla.edu To: Dmitry Gutov Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Jan 18 08:50:40 2013 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Tw6il-0003x5-KR for geb-bug-gnu-emacs@m.gmane.org; Fri, 18 Jan 2013 08:50:39 +0100 Original-Received: from localhost ([::1]:56054 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Tw6iV-00009D-0a for geb-bug-gnu-emacs@m.gmane.org; Fri, 18 Jan 2013 02:50:23 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:56546) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Tw6iR-00008C-RP for bug-gnu-emacs@gnu.org; Fri, 18 Jan 2013 02:50:21 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Tw6iP-0001dT-Ay for bug-gnu-emacs@gnu.org; Fri, 18 Jan 2013 02:50:19 -0500 Original-Received: from debbugs.gnu.org ([140.186.70.43]:60552) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Tw6iP-0001d2-7c for bug-gnu-emacs@gnu.org; Fri, 18 Jan 2013 02:50:17 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.72) (envelope-from ) id 1Tw6j7-0001Te-MI for bug-gnu-emacs@gnu.org; Fri, 18 Jan 2013 02:51:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 18 Jan 2013 07:51:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 13149 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: unreproducible moreinfo Original-Received: via spool by 13149-submit@debbugs.gnu.org id=B13149.13584954335639 (code B ref 13149); Fri, 18 Jan 2013 07:51:01 +0000 Original-Received: (at 13149) by debbugs.gnu.org; 18 Jan 2013 07:50:33 +0000 Original-Received: from localhost ([127.0.0.1]:37783 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1Tw6if-0001Su-1y for submit@debbugs.gnu.org; Fri, 18 Jan 2013 02:50:33 -0500 Original-Received: from mtaout22.012.net.il ([80.179.55.172]:50592) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1Tw6ic-0001Sk-G1 for 13149@debbugs.gnu.org; Fri, 18 Jan 2013 02:50:31 -0500 Original-Received: from conversion-daemon.a-mtaout22.012.net.il by a-mtaout22.012.net.il (HyperSendmail v2007.08) id <0MGT00M009PIOZ00@a-mtaout22.012.net.il> for 13149@debbugs.gnu.org; Fri, 18 Jan 2013 09:49:25 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout22.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0MGT00MKA9QCOX00@a-mtaout22.012.net.il>; Fri, 18 Jan 2013 09:49:25 +0200 (IST) In-reply-to: <50F8CC6F.7000106@gmail.com> X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.13 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 140.186.70.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:69966 Archived-At: > Date: Fri, 18 Jan 2013 08:15:43 +0400 > From: Dmitry Gutov > CC: eggert@cs.ucla.edu, 13149@debbugs.gnu.org > > > I suspect that what you see is some bad interaction between VirtualBox > > and the nasty way Windows disk cache optimizes its disk I/O. It is > > known to update the file attributes lazily, so data could be written > > to a file without the file's directory entry updated at the same time, > > until some time later. > > I wonder why I don't see that with the straight Windows build editing > files on the local filesystem. This is speculation, but I presume that locally the file-I/O API calls interact with the cached files better than what VirtualBox's Posix emulation does. Or maybe I'm wrong, and we will start seeing similar problems on Windows, now that Emacs uses 'fstat' much more than it did a year or so ago (when 'fstat' was not used in the native Windows build at all).