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From: Rik van Riel <riel@redhat.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ingo Oeser <ioe-lkml@rameria.de>,
Miklos Szeredi <miklos@szeredi.hu>,
peterz@infradead.org, salikhmetov@gmail.com, linux-mm@kvack.org,
jakob@unthought.net, linux-kernel@vger.kernel.org,
valdis.kletnieks@vt.edu, ksm@42.dk, staubach@redhat.com,
jesper.juhl@gmail.com, akpm@linux-foundation.org,
protasnb@gmail.com, r.e.wolff@bitwizard.nl,
hidave.darkstar@gmail.com, hch@infradead.org
Subject: Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapped files
Date: Fri, 18 Jan 2008 17:54:50 -0500 [thread overview]
Message-ID: <20080118175450.715ded60@bree.surriel.com> (raw)
In-Reply-To: <alpine.LFD.1.00.0801181439330.2957@woody.linux-foundation.org>
On Fri, 18 Jan 2008 14:47:33 -0800 (PST)
Linus Torvalds <torvalds@linux-foundation.org> wrote:
> - keep it simple. Let's face it, Linux has never ever given those
> guarantees before, and it's not is if anybody has really cared. Even
> now, the issue seems to be more about paper standards conformance than
> anything else.
There is one issue which is way more than just standards conformance.
When a program changes file data through mmap(), at some point the
mtime needs to be update so that backup programs know to back up the
new version of the file.
Backup programs not seeing an updated mtime is a really big deal.
--
All rights reversed.
next prev parent reply other threads:[~2008-01-18 22:55 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-17 22:31 [PATCH -v6 0/2] Fixing the issue with memory-mapped file times Anton Salikhmetov
2008-01-17 22:31 ` [PATCH -v6 1/2] Massive code cleanup of sys_msync() Anton Salikhmetov
2008-01-18 9:33 ` Miklos Szeredi
2008-01-18 10:30 ` Anton Salikhmetov
2008-01-17 22:31 ` [PATCH -v6 2/2] Updating ctime and mtime for memory-mapped files Anton Salikhmetov
2008-01-18 9:51 ` Miklos Szeredi
2008-01-18 10:15 ` Peter Zijlstra
2008-01-18 10:25 ` Peter Zijlstra
2008-01-18 10:39 ` Anton Salikhmetov
2008-01-18 17:58 ` Linus Torvalds
2008-01-18 18:11 ` Miklos Szeredi
2008-01-18 18:28 ` Rik van Riel
2008-01-18 18:51 ` Miklos Szeredi
2008-01-18 18:43 ` Linus Torvalds
2008-01-18 18:57 ` Miklos Szeredi
2008-01-18 19:08 ` Linus Torvalds
2008-01-18 19:22 ` Miklos Szeredi
2008-01-18 19:35 ` Linus Torvalds
2008-01-18 19:58 ` Anton Salikhmetov
2008-01-18 20:22 ` Linus Torvalds
2008-01-18 21:03 ` Anton Salikhmetov
2008-01-18 21:27 ` Linus Torvalds
2008-01-18 22:04 ` Anton Salikhmetov
2008-01-18 22:21 ` Linus Torvalds
2008-01-18 22:35 ` Anton Salikhmetov
2008-01-18 22:32 ` Ingo Oeser
2008-01-18 22:47 ` Linus Torvalds
2008-01-18 22:54 ` Rik van Riel [this message]
2008-01-19 0:50 ` Matt Mackall
2008-01-19 4:25 ` Rik van Riel
2008-01-19 10:22 ` Miklos Szeredi
2008-01-19 15:49 ` Matt Mackall
2008-01-21 14:25 ` Peter Staubach
2008-01-21 14:36 ` Anton Salikhmetov
2008-01-18 10:38 ` Miklos Szeredi
2008-01-18 11:00 ` Peter Zijlstra
2008-01-18 11:17 ` Miklos Szeredi
2008-01-18 11:23 ` Peter Zijlstra
2008-01-18 11:36 ` Miklos Szeredi
2008-01-18 9:40 ` [PATCH -v6 0/2] Fixing the issue with memory-mapped file times Miklos Szeredi
2008-01-18 10:31 ` Anton Salikhmetov
2008-01-18 19:48 ` Anton Salikhmetov
2008-01-19 10:45 ` Miklos Szeredi
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