linux-kernel - Re: [PATCH RFC] vfs: add a O

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Message-ID: <20150714131300.GA6804@amd>
Date:	Tue, 14 Jul 2015 15:13:00 +0200
From:	Pavel Machek <pavel@....cz>
To:	NeilBrown <neilb@...e.de>
Cc:	"J. Bruce Fields" <bfields@...ldses.org>,
	John Stoffel <john@...ffel.org>,
	Austin S Hemmelgarn <ahferroin7@...il.com>,
	Kevin Easton <kevin@...rana.org>,
	Theodore Ts'o <tytso@....edu>, Sage Weil <sage@...dream.net>,
	Trond Myklebust <trond.myklebust@...marydata.com>,
	Dave Chinner <david@...morbit.com>,
	Zach Brown <zab@...hat.com>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Linux FS-devel Mailing List <linux-fsdevel@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux API Mailing List <linux-api@...r.kernel.org>
Subject: Re: [PATCH RFC] vfs: add a O_NOMTIME flag

Hi!

> BTW When you "swap" to a file the mtime doesn't get updated.  No one seems to
> complain about that.  I guess it is a rather narrow use-case though.

Actually yes, I'd like to complain.

It was not swap, it was mount -o loop, but I guess that's the same
case. Then rsync refused to work on that file... and being on slow ARM
system it took me a while to figure out WTF is going on.

So yes, we have problems with mtime, and yes, they matter.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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