LXR linux/fs/ocfs2/dcache.h

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