vfs: make dentry_needs_remove_privs() internal

Only used by the vfs.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

fs/inode.c

@@ -1720,7 +1720,6 @@ int dentry_needs_remove_privs(struct dentry *dentry)
 		mask |= ATTR_KILL_PRIV;
 	return mask;
 }
-EXPORT_SYMBOL(dentry_needs_remove_privs);
 
 static int __remove_privs(struct dentry *dentry, int kill)
 {

fs/internal.h

@@ -114,6 +114,7 @@ extern int vfs_open(const struct path *, struct file *, const struct cred *);
  */
 extern long prune_icache_sb(struct super_block *sb, struct shrink_control *sc);
 extern void inode_add_lru(struct inode *inode);
+extern int dentry_needs_remove_privs(struct dentry *dentry);
 
 /*
  * fs-writeback.c

include/linux/fs.h

@@ -2725,7 +2725,6 @@ extern struct inode *new_inode(struct super_block *sb);
 extern void free_inode_nonrcu(struct inode *inode);
 extern int should_remove_suid(struct dentry *);
 extern int file_remove_privs(struct file *);
-extern int dentry_needs_remove_privs(struct dentry *dentry);
 
 extern void __insert_inode_hash(struct inode *, unsigned long hashval);
 static inline void insert_inode_hash(struct inode *inode)