[pulseaudio-discuss] Making locking nicer for NFS

[Thomas Bushnell, BSG]

On Thu, Aug 25, 2011 at 10:30 AM, David Henningsson <
david.henningsson at canonical.com> wrote:

> On 08/21/2011 04:38 PM, Thomas Bushnell, BSG wrote:
>
>> Whoops. They need to repeat the read after obtaining the write lock and
>> only update the file if the contents are still bad in that case.
>>
>
> Would a good handling of this be:
>
> 1) Open the cookie read-only
> 2) read the cookie
> 3) close file
> 4) if we have a correct cookie, do nothing more
> 5) if we have the wrong cookie, do the old handling unchanged: open with
> write lock, check the contents (again), and write if something is (still)
> wrong.
>

Yes, I think that's correct.
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