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 */ 44