ceph: protect access to d_parent

[mirror_ubuntu-bionic-kernel.git] / fs / ceph / super.h

diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index c24891a5bec2e8cec2c90742abe8a8a1283ae42e..c1eb9a014b741a00641e0268de3d3ec566b90596 100644 (file)
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -801,6 +801,7 @@ extern void ceph_dentry_lru_touch(struct dentry *dn);
 extern void ceph_dentry_lru_del(struct dentry *dn);
 extern void ceph_invalidate_dentry_lease(struct dentry *dentry);
 extern unsigned ceph_dentry_hash(struct dentry *dn);
+extern struct inode *ceph_get_dentry_parent_inode(struct dentry *dentry);
 
 /*
  * our d_ops vary depending on whether the inode is live,
@@ -823,14 +824,6 @@ extern int ceph_encode_locks(struct inode *i, struct ceph_pagelist *p,
                             int p_locks, int f_locks);
 extern int lock_to_ceph_filelock(struct file_lock *fl, struct ceph_filelock *c);
 
-static inline struct inode *get_dentry_parent_inode(struct dentry *dentry)
-{
-       if (dentry && dentry->d_parent)
-               return dentry->d_parent->d_inode;
-
-       return NULL;
-}
-
 /* debugfs.c */
 extern int ceph_fs_debugfs_init(struct ceph_fs_client *client);
 extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client);