diff --git a/kmod/src/lock.c b/kmod/src/lock.c
index d136e95f..120bcdf7 100644
--- a/kmod/src/lock.c
+++ b/kmod/src/lock.c
@@ -1571,7 +1571,7 @@ out:
 	return ret;
 }
 
-void scoutfs_free_unused_locks(struct super_block *sb, unsigned long nr)
+void scoutfs_free_unused_locks(struct super_block *sb)
 {
 	struct lock_info *linfo = SCOUTFS_SB(sb)->lock_info;
 	struct shrink_control sc = {
diff --git a/kmod/src/lock.h b/kmod/src/lock.h
index bf9a9b8a..40f8f5b9 100644
--- a/kmod/src/lock.h
+++ b/kmod/src/lock.h
@@ -101,7 +101,7 @@ void scoutfs_lock_del_coverage(struct super_block *sb,
 bool scoutfs_lock_protected(struct scoutfs_lock *lock, struct scoutfs_key *key,
 			    enum scoutfs_lock_mode mode);
 
-void scoutfs_free_unused_locks(struct super_block *sb, unsigned long nr);
+void scoutfs_free_unused_locks(struct super_block *sb);
 
 int scoutfs_lock_setup(struct super_block *sb);
 void scoutfs_lock_unmount_begin(struct super_block *sb);
diff --git a/kmod/src/super.c b/kmod/src/super.c
index 3d0d2050..b691b038 100644
--- a/kmod/src/super.c
+++ b/kmod/src/super.c
@@ -168,7 +168,7 @@ out:
 	 * try to free as many locks as possible.
 	 */
 	if (scoutfs_trigger(sb, STATFS_LOCK_PURGE))
-		scoutfs_free_unused_locks(sb, -1UL);
+		scoutfs_free_unused_locks(sb);
 
 	return ret;
 }