diff options
Diffstat (limited to 'fs/debugfs/internal.h')
| -rw-r--r-- | fs/debugfs/internal.h | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/fs/debugfs/internal.h b/fs/debugfs/internal.h index b3e8443a1f47..f0d73d86cc1a 100644 --- a/fs/debugfs/internal.h +++ b/fs/debugfs/internal.h @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * internal.h - declarations internal to debugfs * * Copyright (C) 2016 Nicolai Stange <nicstange@gmail.com> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License version - * 2 as published by the Free Software Foundation. - * */ #ifndef _DEBUGFS_INTERNAL_H_ @@ -19,4 +15,18 @@ extern const struct file_operations debugfs_noop_file_operations; extern const struct file_operations debugfs_open_proxy_file_operations; extern const struct file_operations debugfs_full_proxy_file_operations; +struct debugfs_fsdata { + const struct file_operations *real_fops; + refcount_t active_users; + struct completion active_users_drained; +}; + +/* + * A dentry's ->d_fsdata either points to the real fops or to a + * dynamically allocated debugfs_fsdata instance. + * In order to distinguish between these two cases, a real fops + * pointer gets its lowest bit set. + */ +#define DEBUGFS_FSDATA_IS_REAL_FOPS_BIT BIT(0) + #endif /* _DEBUGFS_INTERNAL_H_ */ |