From: Andi Kleen <ak@suse.de>
To: Jamie Lokier <lk@tantalophile.demon.co.uk>
Cc: eggert@twinsun.com, linux-kernel@vger.kernel.org
Subject: Re: nanosecond file timestamp resolution in filesystems, GNU make, etc.
Date: 28 Oct 2002 12:08:07 +0100 [thread overview]
Message-ID: <p73r8eastwo.fsf@oldwotan.suse.de> (raw)
In-Reply-To: Jamie Lokier's message of "28 Oct 2002 11:36:02 +0100"
Jamie Lokier <lk@tantalophile.demon.co.uk> writes:
> Unfortunately that application code breaks when the filesystem may
> have timestamps with resolution better than 1 second, but worse than 1
> nanosecond.
The current resolution is jiffies, which tends to be 1ms
Then the application just can't do the right thing,
> unless it knows what rounding was applied by the kernel/filesystem, so
> it can change that rounding in a safe direction.
The rounding is always truncation. So the application can just assume
that.
-Andi
next prev parent reply other threads:[~2002-10-28 11:01 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20021027153651.GB26297@pimlott.net.suse.lists.linux.kernel>
[not found] ` <200210280947.g9S9l9H01162@sic.twinsun.com.suse.lists.linux.kernel>
2002-10-28 11:05 ` Andi Kleen
[not found] ` <20021028102809.GA16062@bjl1.asuk.net.suse.lists.linux.kernel>
2002-10-28 11:08 ` Andi Kleen [this message]
2002-10-28 12:56 ` Jamie Lokier
2002-10-28 14:15 ` Andi Kleen
2002-10-28 14:28 ` Maciej W. Rozycki
2002-10-28 15:13 ` Jamie Lokier
2002-10-28 15:40 ` Maciej W. Rozycki
2002-10-28 15:59 ` Jamie Lokier
2002-10-28 15:17 ` Jamie Lokier
[not found] <20021027153651.GB26297@pimlott.net>
2002-10-28 9:47 ` Paul Eggert
2002-10-28 10:28 ` Jamie Lokier
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