From mboxrd@z Thu Jan 1 00:00:00 1970 Received: by fg-out-1718.google.com with SMTP id e12so773280fga.4 for ; Thu, 10 Jan 2008 16:38:36 -0800 (PST) Subject: [PATCH 0/2][RFC][BUG] msync: another attempt to fix the ctime/mtime issue From: Anton Salikhmetov Content-Type: text/plain Date: Fri, 11 Jan 2008 03:38:36 +0300 Message-Id: <1200011916.19293.91.camel@codedot> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org From: Anton Salikhmetov Return-Path: To: linux-mm@kvack.org Cc: jakob@unthought.net, linux-kernel@vger.kernel.org, Valdis.Kletnieks@vt.edu, riel@redhat.com, ksm@42.dk, staubach@redhat.com, jesper.juhl@gmail.com List-ID: I would like to propose my second solution for the bug #2645 from the kernel bug tracker: http://bugzilla.kernel.org/show_bug.cgi?id=2645 You may find the relevant background information as well as an extensive discussion of my previous solution using the following link: http://lkml.org/lkml/2008/1/9/387 The short change list: 1) taking into account the intervening sync() call which Peter Staubach has mentioned (http://lkml.org/lkml/2008/1/9/267); 2) splitting the solution into two patches: code cleanup and functional changes; 3) updating ctime and mtime in do_fsync(), due to that the file time stamps get updated even without any explicit call to msync(). Please note that the second patch (functional changes) should be applied on top of the first one (code cleanup). Also I changed my unit test due to Peter's remark: http://lkml.org/lkml/2008/1/9/267 The new version of the unit test can be found here: http://bugzilla.kernel.org/attachment.cgi?id=14398&action=view No regression was found when I ran the test cases for the msync() system call from the LTP test suite (msync01 - msync05, mmapstress01, mmapstress09, and mmapstress10). -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org