LXR linux/fs/ocfs2/dcache.h

   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