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
  13 extern const struct dentry_operations ocfs2_dentry_ops;
  14
  15 struct 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
  28 int ocfs2_dentry_attach_lock(struct dentry *dentry, struct inode *inode,
  29                              u64 parent_blkno);
  30
  31 void ocfs2_dentry_lock_put(struct ocfs2_super *osb,
  32                            struct ocfs2_dentry_lock *dl);
  33
  34 struct dentry *ocfs2_find_local_alias(struct inode *inode, u64 parent_blkno,
  35                                       int skip_unhashed);
  36
  37 void ocfs2_dentry_move(struct dentry *dentry, struct dentry *target,
  38                        struct inode *old_dir, struct inode *new_dir);
  39
  40 extern spinlock_t dentry_attach_lock;
  41 void ocfs2_dentry_attach_gen(struct dentry *dentry);
  42
  43 #endif /* OCFS2_DCACHE_H */