1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* -*- mode: c; c-basic-offset: 8; -*- 3 * vim: noexpandtab sw=8 ts=8 sts=0: 4 * 5 * dcache.h 6 * 7 * Function prototypes 8 * 9 * Copyright (C) 2002, 2004 Oracle. All rights reserved. 10 */ 11 12#ifndef OCFS2_DCACHE_H 13#define OCFS2_DCACHE_H 14 15extern const struct dentry_operations ocfs2_dentry_ops; 16 17struct ocfs2_dentry_lock { 18 unsigned int dl_count; 19 u64 dl_parent_blkno; 20 21 /* 22 * The ocfs2_dentry_lock keeps an inode reference until 23 * dl_lockres has been destroyed. This is usually done in 24 * ->d_iput() anyway, so there should be minimal impact. 25 */ 26 struct inode *dl_inode; 27 struct ocfs2_lock_res dl_lockres; 28}; 29 30int ocfs2_dentry_attach_lock(struct dentry *dentry, struct inode *inode, 31 u64 parent_blkno); 32 33void ocfs2_dentry_lock_put(struct ocfs2_super *osb, 34 struct ocfs2_dentry_lock *dl); 35 36struct dentry *ocfs2_find_local_alias(struct inode *inode, u64 parent_blkno, 37 int skip_unhashed); 38 39void ocfs2_dentry_move(struct dentry *dentry, struct dentry *target, 40 struct inode *old_dir, struct inode *new_dir); 41 42extern spinlock_t dentry_attach_lock; 43void ocfs2_dentry_attach_gen(struct dentry *dentry); 44 45#endif /* OCFS2_DCACHE_H */ 46