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Subject: Re: Nanosecond fs timestamp support: sad
From: Matt Mackall <mpm@selenic.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: NeilBrown <neilb@suse.de>, linux-fsdevel <linux-fsdevel@vger.kernel.org>,
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Date: Fri, 22 Jul 2011 16:11:42 -0500
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On Fri, 2011-07-22 at 22:59 +0200, Andi Kleen wrote:
> > Indeed. Only usefully exists on ext4 and requires extra system calls.
> 
> Not sure what you mean?  It's in stat(2), just like the timestamps.

I don't see anything that looks like a version or generation number in
either the man pages, the asm-generic/stat.h, or glibc's asm/stat.h.
Pointer?

The only interface I'm aware of is the EXT?_IOC_GETVERSION interface.
Looks like that is supported by BTRFS.

-- 
Mathematics is the supreme nostalgia of our time.