On Mon, 30 Mar 2015, Konstantin Belousov wrote:
On Mon, Mar 30, 2015 at 03:14:10PM +1100, Bruce Evans wrote:
File timestamps use CLOCK_REALTIME, so they are supposed to go backwards
sometimes. More importantly, if the time is set to a future time (by
utimes(), etc., not due to a clock step), t
On Mon, Mar 30, 2015 at 03:14:10PM +1100, Bruce Evans wrote:
> File timestamps use CLOCK_REALTIME, so they are supposed to go backwards
> sometimes. More importantly, if the time is set to a future time (by
> utimes(), etc., not due to a clock step), this prevents it being correted.
> I think you
On Mon, 30 Mar 2015, Bruce Evans wrote:
On Sun, 29 Mar 2015, Konstantin Belousov wrote:
Interesting complication with the devfs timestamp update is that
devfs_read_f() and devfs_write_f() do not lock the vnode. So whatever
update method is used, stat(2) on devfs might return inconsistent value
On Sun, 29 Mar 2015, Konstantin Belousov wrote:
Interesting complication with the devfs timestamp update is that
devfs_read_f() and devfs_write_f() do not lock the vnode. So whatever
update method is used, stat(2) on devfs might return inconsistent value,
since tv_src/tv_nsec cannot be updated o
On Sun, 29 Mar 2015, Jilles Tjoelker wrote:
On Sun, Mar 22, 2015 at 11:25:07AM -0700, Don Lewis wrote:
It's not totally worthless. I think the mtime on tty devices is used to
calculate the idle time that is printed by the w command. We just don't
need nanosecond accuracy for that.
Hmm. The
On 29 Mar, Jilles Tjoelker wrote:
> On Sun, Mar 22, 2015 at 11:25:07AM -0700, Don Lewis wrote:
>> It's not totally worthless. I think the mtime on tty devices is used to
>> calculate the idle time that is printed by the w command. We just don't
>> need nanosecond accuracy for that.
>
> Hmm. The
On Sun, Mar 29, 2015 at 07:51:37PM +0200, Jilles Tjoelker wrote:
> On Sun, Mar 22, 2015 at 11:25:07AM -0700, Don Lewis wrote:
> > It's not totally worthless. I think the mtime on tty devices is used to
> > calculate the idle time that is printed by the w command. We just don't
> > need nanosecond
On Sun, Mar 22, 2015 at 11:25:07AM -0700, Don Lewis wrote:
> It's not totally worthless. I think the mtime on tty devices is used to
> calculate the idle time that is printed by the w command. We just don't
> need nanosecond accuracy for that.
Hmm. The idle time on tty devices breaking is a clea
On Sun, 22 Mar 2015, Konstantin Belousov wrote:
On Sun, Mar 22, 2015 at 02:37:09PM +0100, Jilles Tjoelker wrote:
On Sat, Mar 21, 2015 at 08:49:00PM +1100, Bruce Evans wrote:
On Sat, 21 Mar 2015, Xin LI wrote:
Log:
Disable timestamping on devfs read/write operations by default.
...
I don'
On Sun, 22 Mar 2015, Jilles Tjoelker wrote:
On Sat, Mar 21, 2015 at 08:49:00PM +1100, Bruce Evans wrote:
On Sat, 21 Mar 2015, Xin LI wrote:
Log:
Disable timestamping on devfs read/write operations by default.
I don't like this. It defaults to non-POSIX-conformant behaviour...
The slo
On 22 Mar, Konstantin Belousov wrote:
> On Sun, Mar 22, 2015 at 02:37:09PM +0100, Jilles Tjoelker wrote:
>> On Sat, Mar 21, 2015 at 08:49:00PM +1100, Bruce Evans wrote:
>> > On Sat, 21 Mar 2015, Xin LI wrote:
>>
>> > > Log:
>> > > Disable timestamping on devfs read/write operations by default.
>>
On Sun, Mar 22, 2015 at 02:37:09PM +0100, Jilles Tjoelker wrote:
> On Sat, Mar 21, 2015 at 08:49:00PM +1100, Bruce Evans wrote:
> > On Sat, 21 Mar 2015, Xin LI wrote:
>
> > > Log:
> > > Disable timestamping on devfs read/write operations by default.
>
> > > Currently we update timestamps uncond
On 22/03/2015 1:27 AM, Konstantin Belousov wrote:
> On Sat, Mar 21, 2015 at 11:00:09PM +1100, Kubilay Kocak wrote:
>> On 21/03/2015 12:14 PM, Xin LI wrote:
>>> Author: delphij
>>> Date: Sat Mar 21 01:14:11 2015
>>> New Revision: 280308
>>> URL: https://svnweb.freebsd.org/changeset/base/280308
>>>
>
On Sat, Mar 21, 2015 at 08:49:00PM +1100, Bruce Evans wrote:
> On Sat, 21 Mar 2015, Xin LI wrote:
> > Log:
> > Disable timestamping on devfs read/write operations by default.
> > Currently we update timestamps unconditionally when doing read or
> > write operations. This may slow things down
On Sat, Mar 21, 2015 at 11:00:09PM +1100, Kubilay Kocak wrote:
> On 21/03/2015 12:14 PM, Xin LI wrote:
> > Author: delphij
> > Date: Sat Mar 21 01:14:11 2015
> > New Revision: 280308
> > URL: https://svnweb.freebsd.org/changeset/base/280308
> >
> > Log:
> > Disable timestamping on devfs read/wri
On 21/03/2015 12:14 PM, Xin LI wrote:
> Author: delphij
> Date: Sat Mar 21 01:14:11 2015
> New Revision: 280308
> URL: https://svnweb.freebsd.org/changeset/base/280308
>
> Log:
> Disable timestamping on devfs read/write operations by default.
>
> Currently we update timestamps unconditional
On Sat, 21 Mar 2015, Xin LI wrote:
Log:
Disable timestamping on devfs read/write operations by default.
Currently we update timestamps unconditionally when doing read or
write operations. This may slow things down on hardware where
reading timestamps is expensive (e.g. HPET, because of the
Author: delphij
Date: Sat Mar 21 01:14:11 2015
New Revision: 280308
URL: https://svnweb.freebsd.org/changeset/base/280308
Log:
Disable timestamping on devfs read/write operations by default.
Currently we update timestamps unconditionally when doing read or
write operations. This may slow
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