[Cluster-devel] [PATCH] gfs2: Add missing rcu locking for glock lookup

[Andreas Gruenbacher]

On Wed, Feb 22, 2017 at 4:29 PM, Steven Whitehouse <swhiteho at redhat.com> wrote:
> There should be no need to retry at all. Either the new entry will be added
> to the hash table, or it will find an existing entry in the table. Is there
> really some way this can fail for some reason?

Yes, we may find an existing entry but by the time we try to get a
lockref, the entry may be dead. In that case, the right thing to do is
to retry the insert.

Andreas