diff --git a/fs/afs/inode.c b/fs/afs/inode.c
index 7dde703df40c48fe6632bb4e5cff33964345e906..cd0a0060950bea24db9904f022e2ee7acb47e09d 100644
--- a/fs/afs/inode.c
+++ b/fs/afs/inode.c
@@ -538,7 +538,7 @@ struct inode *afs_root_iget(struct super_block *sb, struct key *key)
  * mark the data attached to an inode as obsolete due to a write on the server
  * - might also want to ditch all the outstanding writes and dirty pages
  */
-void afs_zap_data(struct afs_vnode *vnode)
+static void afs_zap_data(struct afs_vnode *vnode)
 {
 	_enter("{%llx:%llu}", vnode->fid.vid, vnode->fid.vnode);
 
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 519ffb104616e003aad6c75ad8f64ccc3db273fc..0c9806ef2a19facc2287b59c4bf77d6046be0d6e 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -1069,7 +1069,6 @@ extern int afs_ilookup5_test_by_fid(struct inode *, void *);
 extern struct inode *afs_iget_pseudo_dir(struct super_block *, bool);
 extern struct inode *afs_iget(struct afs_operation *, struct afs_vnode_param *);
 extern struct inode *afs_root_iget(struct super_block *, struct key *);
-extern void afs_zap_data(struct afs_vnode *);
 extern bool afs_check_validity(struct afs_vnode *);
 extern int afs_validate(struct afs_vnode *, struct key *);
 extern int afs_getattr(const struct path *, struct kstat *, u32, unsigned int);