nfsd4: name openowner data structures more clearly

These appear to be generic (for both open and lock owners), but they're
actually just for open owners.  This has confused me more than once.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

fs/nfsd/nfs4state.c

@@ -134,27 +134,27 @@ unsigned int max_delegations;
  * Open owner state (share locks)
  */
 
-/* hash tables for nfs4_stateowner */
-#define OWNER_HASH_BITS              8
-#define OWNER_HASH_SIZE             (1 << OWNER_HASH_BITS)
-#define OWNER_HASH_MASK             (OWNER_HASH_SIZE - 1)
+/* hash tables for open owners */
+#define OPEN_OWNER_HASH_BITS              8
+#define OPEN_OWNER_HASH_SIZE             (1 << OPEN_OWNER_HASH_BITS)
+#define OPEN_OWNER_HASH_MASK             (OPEN_OWNER_HASH_SIZE - 1)
 
-static unsigned int ownerid_hashval(const u32 id)
+static unsigned int open_ownerid_hashval(const u32 id)
 {
-	return id & OWNER_HASH_MASK;
+	return id & OPEN_OWNER_HASH_MASK;
 }
 
-static unsigned int ownerstr_hashval(u32 clientid, struct xdr_netobj *ownername)
+static unsigned int open_ownerstr_hashval(u32 clientid, struct xdr_netobj *ownername)
 {
 	unsigned int ret;
 
 	ret = opaque_hashval(ownername->data, ownername->len);
 	ret += clientid;
-	return ret & OWNER_HASH_MASK;
+	return ret & OPEN_OWNER_HASH_MASK;
 }
 
-static struct list_head	ownerid_hashtbl[OWNER_HASH_SIZE];
-static struct list_head	ownerstr_hashtbl[OWNER_HASH_SIZE];
+static struct list_head	open_ownerid_hashtbl[OPEN_OWNER_HASH_SIZE];
+static struct list_head	open_ownerstr_hashtbl[OPEN_OWNER_HASH_SIZE];
 
 /* hash table for nfs4_file */
 #define FILE_HASH_BITS                   8
@@ -2240,16 +2240,16 @@ alloc_init_open_stateowner(unsigned int strhashval, struct nfs4_client *clp, str
 
 	if (!(sop = alloc_stateowner(&open->op_owner)))
 		return NULL;
-	idhashval = ownerid_hashval(current_ownerid);
+	idhashval = open_ownerid_hashval(current_ownerid);
 	INIT_LIST_HEAD(&sop->so_idhash);
 	INIT_LIST_HEAD(&sop->so_strhash);
 	INIT_LIST_HEAD(&sop->so_perclient);
 	INIT_LIST_HEAD(&sop->so_stateids);
 	INIT_LIST_HEAD(&sop->so_perstateid);  /* not used */
 	INIT_LIST_HEAD(&sop->so_close_lru);
 	sop->so_time = 0;
-	list_add(&sop->so_idhash, &ownerid_hashtbl[idhashval]);
-	list_add(&sop->so_strhash, &ownerstr_hashtbl[strhashval]);
+	list_add(&sop->so_idhash, &open_ownerid_hashtbl[idhashval]);
+	list_add(&sop->so_strhash, &open_ownerstr_hashtbl[strhashval]);
 	list_add(&sop->so_perclient, &clp->cl_openowners);
 	sop->so_is_open_owner = 1;
 	sop->so_id = current_ownerid++;
@@ -2313,7 +2313,7 @@ find_openstateowner_str(unsigned int hashval, struct nfsd4_open *open)
 {
 	struct nfs4_stateowner *so = NULL;
 
-	list_for_each_entry(so, &ownerstr_hashtbl[hashval], so_strhash) {
+	list_for_each_entry(so, &open_ownerstr_hashtbl[hashval], so_strhash) {
 		if (same_owner_str(so, &open->op_owner, &open->op_clientid))
 			return so;
 	}
@@ -2464,7 +2464,7 @@ nfsd4_process_open1(struct nfsd4_compound_state *cstate,
 	if (STALE_CLIENTID(&open->op_clientid))
 		return nfserr_stale_clientid;
 
-	strhashval = ownerstr_hashval(clientid->cl_id, &open->op_owner);
+	strhashval = open_ownerstr_hashval(clientid->cl_id, &open->op_owner);
 	sop = find_openstateowner_str(strhashval, open);
 	open->op_stateowner = sop;
 	if (!sop) {
@@ -4518,9 +4518,9 @@ nfs4_state_init(void)
 	for (i = 0; i < FILE_HASH_SIZE; i++) {
 		INIT_LIST_HEAD(&file_hashtbl[i]);
 	}
-	for (i = 0; i < OWNER_HASH_SIZE; i++) {
-		INIT_LIST_HEAD(&ownerstr_hashtbl[i]);
-		INIT_LIST_HEAD(&ownerid_hashtbl[i]);
+	for (i = 0; i < OPEN_OWNER_HASH_SIZE; i++) {
+		INIT_LIST_HEAD(&open_ownerstr_hashtbl[i]);
+		INIT_LIST_HEAD(&open_ownerid_hashtbl[i]);
 	}
 	for (i = 0; i < STATEID_HASH_SIZE; i++) {
 		INIT_LIST_HEAD(&stateid_hashtbl[i]);