[OpenAFS-devel] Linux atime nits

[Derrick Brashear]

On Mon, Jan 18, 2010 at 12:26 PM, Marc Aurele La France <tsi@ualberta.ca> w=
rote:
> On Sun, 17 Jan 2010, Simon Wilkinson wrote:
>>
>> On 17 Jan 2010, at 13:48, Marc Aurele La France wrote:
>
>>> Any chance of incorporating these into stable?
>
>> When we last discussed pullups for 1.4.12, we decided that these were
>> too high risk for that release (the changes appeared very late in the
>> release cycle). MS_NOATIME is sufficiently large that it doesn't appear
>> to conflict with any inode flags, up to and including Linus's current
>> kernel, so there doesn't appear to be a risk associated with not taking
>> them this time round.
>
> Only one more inode flag is needed to create a conflict. =A0Whether or no=
t
> this occurs before 1.4.13 is released is a risk I gather you are willing =
to
> take. =A0I think it's better to be pro-active.

The question is "will it happen in a kernel 1.4.12 also doesn't
support, making the issue somewhat less urgent?".

There's a tradeoff in risks here. We obviously have a bit more
flexibility than if we had a fixed schedule of releases.

> I can see your point if, and only if, AFS is ever changed to provide prop=
er
> access times.

It may well be, but...

> Otherwise, I don't see how eliminating pointless traffic on the wire can =
create a problem.

You're probably right.