nlm: minor nlm_lookup_file argument change

It'll come in handy to get the whole nlm_lock.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

fs/lockd/svc4proc.c

@@ -40,7 +40,8 @@ nlm4svc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp,
 
 	/* Obtain file pointer. Not used by FREE_ALL call. */
 	if (filp != NULL) {
-		if ((error = nlm_lookup_file(rqstp, &file, &lock->fh)) != 0)
+		error = nlm_lookup_file(rqstp, &file, lock);
+		if (error)
 			goto no_locks;
 		*filp = file;
 

fs/lockd/svcproc.c

@@ -69,7 +69,7 @@ nlmsvc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp,
 
 	/* Obtain file pointer. Not used by FREE_ALL call. */
 	if (filp != NULL) {
-		error = cast_status(nlm_lookup_file(rqstp, &file, &lock->fh));
+		error = cast_status(nlm_lookup_file(rqstp, &file, lock));
 		if (error != 0)
 			goto no_locks;
 		*filp = file;

fs/lockd/svcsubs.c

@@ -82,31 +82,31 @@ static inline unsigned int file_hash(struct nfs_fh *f)
  */
 __be32
 nlm_lookup_file(struct svc_rqst *rqstp, struct nlm_file **result,
-					struct nfs_fh *f)
+					struct nlm_lock *lock)
 {
 	struct nlm_file	*file;
 	unsigned int	hash;
 	__be32		nfserr;
 
-	nlm_debug_print_fh("nlm_lookup_file", f);
+	nlm_debug_print_fh("nlm_lookup_file", &lock->fh);
 
-	hash = file_hash(f);
+	hash = file_hash(&lock->fh);
 
 	/* Lock file table */
 	mutex_lock(&nlm_file_mutex);
 
 	hlist_for_each_entry(file, &nlm_files[hash], f_list)
-		if (!nfs_compare_fh(&file->f_handle, f))
+		if (!nfs_compare_fh(&file->f_handle, &lock->fh))
 			goto found;
 
-	nlm_debug_print_fh("creating file for", f);
+	nlm_debug_print_fh("creating file for", &lock->fh);
 
 	nfserr = nlm_lck_denied_nolocks;
 	file = kzalloc(sizeof(*file), GFP_KERNEL);
 	if (!file)
 		goto out_unlock;
 
-	memcpy(&file->f_handle, f, sizeof(struct nfs_fh));
+	memcpy(&file->f_handle, &lock->fh, sizeof(struct nfs_fh));
 	mutex_init(&file->f_mutex);
 	INIT_HLIST_NODE(&file->f_list);
 	INIT_LIST_HEAD(&file->f_blocks);
@@ -117,7 +117,8 @@ nlm_lookup_file(struct svc_rqst *rqstp, struct nlm_file **result,
 	 * We have to make sure we have the right credential to open
 	 * the file.
 	 */
-	if ((nfserr = nlmsvc_ops->fopen(rqstp, f, &file->f_file)) != 0) {
+	nfserr = nlmsvc_ops->fopen(rqstp, &lock->fh, &file->f_file);
+	if (nfserr) {
 		dprintk("lockd: open failed (error %d)\n", nfserr);
 		goto out_free;
 	}

include/linux/lockd/lockd.h

@@ -286,7 +286,7 @@ void		  nlmsvc_locks_init_private(struct file_lock *, struct nlm_host *, pid_t);
  * File handling for the server personality
  */
 __be32		  nlm_lookup_file(struct svc_rqst *, struct nlm_file **,
-					struct nfs_fh *);
+					struct nlm_lock *);
 void		  nlm_release_file(struct nlm_file *);
 void		  nlmsvc_release_lockowner(struct nlm_lock *);
 void		  nlmsvc_mark_resources(struct net *);