Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [PATCH -mm] swsusp: userland interface (rev 2) | Date | Fri, 27 Jan 2006 12:24:12 +0100 |
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Hi,
On Friday, 27 January 2006 04:42, Kay Sievers wrote: > On Wed, Jan 25, 2006 at 09:09:27PM -0500, Jim Crilly wrote: > > On 01/24/06 11:44:37PM +0100, Pavel Machek wrote: > > > On Út 24-01-06 17:38:34, Dave Jones wrote: > > > > > We'll of course try to get the interface right at the first > > > > > try. OTOH... if wrong interface is in kernel for a month, I do not > > > > > think it is reasonable to keep supporting that wrong interface for a > > > > > year before it can be removed. One month of warning should be fair in > > > > > such case... > > > > > > > > Users want to be able to boot between different kernels. > > > > Tying functionality to specific versions of userspace completely > > > > screws them over. > > > > > > Well, by the time we have any _users_ interface should be > > > stable. Actually I believe interface will be stable from day 0, but... > > > > > I'm sure gregkh thought the same thing with about sysfs and udev and we've > > seen how well that's worked out... > > Well, that was just an unfortunate "bug". > > Declaring interfaces "stable" makes as much sense as all the other > tries to define crazy enterprise "standards" nobody follows in real > world. > > In a developing environment, interfaces _become_ stable and don't get > _declared_ by anybody as such. We are not talking about syscall > interfaces or things that are simple enough to be kept stable, if you > cross a certain level of complexity, you just can't apply these rules > anymore. > > Interfaces mature over the time they get used. Only the _use_ of it > collects the needed information to form the model behind it. They get > improved up to the point that changing the interface causes more > pain than it's worth this change. Then an interface has _become_ "stable" > cause it makes sense at that point.
Agreed.
> "by the time we have any _users_ interface should be stable", that's > such a nonsense. If you don't have any user, you don't know if this > interface works at all and only if it gets used you get the needed > feedback to improve it.
I think Pavel meant "users who don't work on it themselves".
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