[pulseaudio-discuss] Making locking nicer for NFS
arun.raghavan at collabora.co.uk
Mon Apr 2 21:27:36 PDT 2012
On Thu, 2011-08-25 at 10:37 -0700, Thomas Bushnell, BSG wrote:
> This method also has the advantage of not relying on lock promotion
> semantics, which (apparently) will make the Windoze version easier.
> 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.
Thomas, David: Any news on this? Looks like we're agreed on an approach
and this "just" needs to be implemented now. :)
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