nfsd: add an operation for unhashing a stateowner
Allow stateowners to be unhashed and destroyed when the last reference
is put. The unhashing must be idempotent. In a future patch, we'll add
some locking around it, but for now it's only protected by the
client_mutex.
Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 9cba295..2322460 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -335,6 +335,7 @@
struct nfs4_stateowner;
struct nfs4_stateowner_operations {
+ void (*so_unhash)(struct nfs4_stateowner *);
void (*so_free)(struct nfs4_stateowner *);
};