[Linux-cachefs] [PATCH 2/5] new fscache interface to check cache consistency

[Milosz Tanski]

David,

Is there anyway I can call you at (at your desk) during EST hours. I'd
like to talk this part through since I think we're going a bit in
circles. I'd like to get this fixed so we can submit the fscache for
Ceph code for the upstream kernel in the merge window.

Best,
-- Milosz

On Wed, Sep 4, 2013 at 3:41 PM, Milosz Tanski <milosz at adfin.com> wrote:
> On Wed, Sep 4, 2013 at 2:13 PM, David Howells <dhowells at redhat.com> wrote:
>> Milosz Tanski <milosz at adfin.com> wrote:
>>
>>> Is it as simple as stick a mutex at the top of the
>>> __fscache_check_consistency function before we try to find the object?
>>
>> You can lock a mutex in a function, but where are you actually going to place
>> the mutex struct?  And what other code is going to take it?  To do this, you'd
>> have to place the mutex struct in fscache_cookie.  The problem is that you
>> have to protect the pointer from fscache_cookie to fscache_object - so placing
>> the mutex in fscache_object doesn't help.
>
> David,
>
> I meant lock cookie->lock inside of __fscache_check_consistency in the
> beginning of the function. I don't see the need to push this into the
> netfs code.
>
> - Milosz