sunrpc: remove 'inuse' flag from struct cache_detail.

This field is not currently in use.

Signed-off-by: NeilBrown <[e-mail]>
Signed-off-by: J. Bruce Fields <[e-mail]>

include/linux/sunrpc/cache.h

···
 	struct hlist_head *	hash_table;
 	rwlock_t		hash_lock;
 
-	atomic_t		inuse; /* active user-space update or lookup */
-
 	char			*name;
 	void			(*cache_put)(struct kref *);
 

net/sunrpc/cache.c

···
 	cache_purge(cd);
 	spin_lock(&cache_list_lock);
 	write_lock(&cd->hash_lock);
-	if (cd->entries || atomic_read(&cd->inuse)) {
+	if (cd->entries) {
 		write_unlock(&cd->hash_lock);
 		spin_unlock(&cache_list_lock);
 		goto out;