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-rw-r--r--fs/ocfs2/dcache.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/fs/ocfs2/dcache.h b/fs/ocfs2/dcache.h
index 90072771114..c091c34d988 100644
--- a/fs/ocfs2/dcache.h
+++ b/fs/ocfs2/dcache.h
@@ -28,4 +28,31 @@
extern struct dentry_operations ocfs2_dentry_ops;
+struct ocfs2_dentry_lock {
+ unsigned int dl_count;
+ u64 dl_parent_blkno;
+
+ /*
+ * The ocfs2_dentry_lock keeps an inode reference until
+ * dl_lockres has been destroyed. This is usually done in
+ * ->d_iput() anyway, so there should be minimal impact.
+ */
+ struct inode *dl_inode;
+ struct ocfs2_lock_res dl_lockres;
+};
+
+int ocfs2_dentry_attach_lock(struct dentry *dentry, struct inode *inode,
+ u64 parent_blkno);
+
+void ocfs2_dentry_lock_put(struct ocfs2_super *osb,
+ struct ocfs2_dentry_lock *dl);
+
+struct dentry *ocfs2_find_local_alias(struct inode *inode, u64 parent_blkno,
+ int skip_unhashed);
+
+void ocfs2_dentry_move(struct dentry *dentry, struct dentry *target,
+ struct inode *old_dir, struct inode *new_dir);
+
+extern spinlock_t dentry_attach_lock;
+
#endif /* OCFS2_DCACHE_H */