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
  15 extern const struct dentry_operations ocfs2_dentry_ops;
  16
  17 struct 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
  30 int ocfs2_dentry_attach_lock(struct dentry *dentry, struct inode *inode,
  31                              u64 parent_blkno);
  32
  33 void ocfs2_dentry_lock_put(struct ocfs2_super *osb,
  34                            struct ocfs2_dentry_lock *dl);
  35
  36 struct dentry *ocfs2_find_local_alias(struct inode *inode, u64 parent_blkno,
  37                                       int skip_unhashed);
  38
  39 void ocfs2_dentry_move(struct dentry *dentry, struct dentry *target,
  40                        struct inode *old_dir, struct inode *new_dir);
  41
  42 extern spinlock_t dentry_attach_lock;
  43 void ocfs2_dentry_attach_gen(struct dentry *dentry);
  44
  45 #endif /* OCFS2_DCACHE_H */