linux-kernel - Re: filesystem time stamp resolution

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Message-ID: <20090227001909.GA23258@infradead.org>
Date:	Thu, 26 Feb 2009 19:19:09 -0500
From:	Christoph Hellwig <hch@...radead.org>
To:	Ulrich Drepper <drepper@...hat.com>
Cc:	Al Viro <viro@...IV.linux.org.uk>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: filesystem time stamp resolution

On Thu, Feb 26, 2009 at 03:57:44PM -0800, Ulrich Drepper wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Al Viro wrote:
> > Who said that it's not going to be dependent on the flags used to
> > create and/or mount the filesystem?  IOW, what makes you think that
> > knowing fs type will be enough to derive that data from?
> 
> Nothing.  Just the hope that the sanity of the users is a concern when
> these features are designed.
> 
> Regardless, we need some sort of solution.  I just looked, there is
> spare room in the kstatfs structure.  We could have a value returned in
> a new f_tsres field or so.  That could be per mount point.

Or finally get a pathconf syscall and inode operation..

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