From: David Howells <dhowells@redhat.com>
To: Dave Chinner <david@fromorbit.com>
Cc: dhowells@redhat.com, Andreas Dilger <adilger@dilger.ca>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/4] statx: Add a system call to make enhanced file info available
Date: Tue, 22 Nov 2016 10:39:29 +0000 [thread overview]
Message-ID: <9047.1479811169@warthog.procyon.org.uk> (raw)
In-Reply-To: <20161119224331.GE31101@dastard>
Dave Chinner <david@fromorbit.com> wrote:
> No. Just provide a 64 bit high resoultion field, and define it to
> contain nanoseconds. When we need higher resolution to be exported
> to userspace, we use a /feature flag/ to indicate that is contains
> something like attoseconds or the like.
That sounds suspiciously like a bad idea - if you're talking about a flag with
a currently undefined meaning that the kernel can inflict on userspace without
warning to change the meaning of the nanoseconds field to something we haven't
defined yet.
Userspace would have to ask for it.
David
next prev parent reply other threads:[~2016-11-22 10:39 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-17 13:34 [RFC][PATCH 0/4] Enhanced file stat system call David Howells
2016-11-17 13:35 ` [PATCH 1/4] statx: Add a system call to make enhanced file info available David Howells
2016-11-17 18:39 ` Jeff Layton
2016-11-18 2:32 ` Andreas Dilger
2016-11-18 8:59 ` David Howells
2016-11-18 9:25 ` Andreas Dilger
2016-11-17 23:40 ` Dave Chinner
2016-11-18 3:28 ` Andreas Dilger
2016-11-18 22:07 ` Dave Chinner
2016-11-18 22:54 ` David Howells
2016-11-19 22:43 ` Dave Chinner
2016-11-21 14:30 ` One Thousand Gnomes
2016-11-21 20:43 ` Dave Chinner
2016-11-22 10:39 ` David Howells [this message]
2016-11-22 13:55 ` Jeff Layton
2016-11-22 20:58 ` Dave Chinner
2016-11-18 9:53 ` David Howells
2016-11-18 8:48 ` David Howells
2016-11-18 12:01 ` Jeff Layton
2016-11-18 9:36 ` David Howells
2016-11-18 17:17 ` Jeff Layton
2016-11-18 18:04 ` David Howells
2016-11-18 18:54 ` Jeff Layton
2016-11-18 19:08 ` David Howells
2016-11-18 9:43 ` David Howells
2016-11-18 21:41 ` Dave Chinner
2016-11-18 22:24 ` David Howells
2016-11-18 10:29 ` David Howells
2016-11-18 21:27 ` Dave Chinner
2016-11-18 21:48 ` David Howells
2016-11-18 22:17 ` Dave Chinner
2016-11-19 10:21 ` Michael Kerrisk (man-pages)
2016-11-17 13:35 ` [PATCH 2/4] statx: Ext4: Return enhanced file attributes David Howells
2016-11-18 3:30 ` Andreas Dilger
2016-11-17 13:35 ` [PATCH 3/4] statx: NFS: " David Howells
2016-11-17 13:35 ` [PATCH 4/4] statx: AFS: " David Howells
2016-11-18 3:34 ` Andreas Dilger
2016-11-18 8:47 ` David Howells
2016-11-17 14:39 ` [RFC][PATCH 0/4] Enhanced file stat system call One Thousand Gnomes
2016-11-17 15:10 ` Michael Kerrisk
2016-11-17 16:33 ` David Howells
2016-11-17 16:45 ` David Howells
2016-11-17 20:00 ` J. Bruce Fields
2016-11-18 2:30 ` Andreas Dilger
2016-11-18 4:29 ` NeilBrown
2016-11-18 13:41 ` One Thousand Gnomes
2016-11-18 13:49 ` David Howells
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