fs/btrfs/ref-verify.h

   1 /*
   2  * Copyright (C) 2014 Facebook.  All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public
   6  * License v2 as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public
  14  * License along with this program; if not, write to the
  15  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  16  * Boston, MA 021110-1307, USA.
  17  */
  18 #ifndef __REF_VERIFY__
  19 #define __REF_VERIFY__
  20
  21 #ifdef CONFIG_BTRFS_FS_REF_VERIFY
  22 int btrfs_build_ref_tree(struct btrfs_fs_info *fs_info);
  23 void btrfs_free_ref_cache(struct btrfs_fs_info *fs_info);
  24 int btrfs_ref_tree_mod(struct btrfs_root *root, u64 bytenr, u64 num_bytes,
  25                        u64 parent, u64 ref_root, u64 owner, u64 offset,
  26                        int action);
  27 void btrfs_free_ref_tree_range(struct btrfs_fs_info *fs_info, u64 start,
  28                                u64 len);
  29
  30 static inline void btrfs_init_ref_verify(struct btrfs_fs_info *fs_info)
  31 {
  32         spin_lock_init(&fs_info->ref_verify_lock);
  33         fs_info->block_tree = RB_ROOT;
  34 }
  35 #else
  36 static inline int btrfs_build_ref_tree(struct btrfs_fs_info *fs_info)
  37 {
  38         return 0;
  39 }
  40
  41 static inline void btrfs_free_ref_cache(struct btrfs_fs_info *fs_info)
  42 {
  43 }
  44
  45 static inline int btrfs_ref_tree_mod(struct btrfs_root *root, u64 bytenr,
  46                                      u64 num_bytes, u64 parent, u64 ref_root,
  47                                      u64 owner, u64 offset, int action)
  48 {
  49         return 0;
  50 }
  51
  52 static inline void btrfs_free_ref_tree_range(struct btrfs_fs_info *fs_info,
  53                                              u64 start, u64 len)
  54 {
  55 }
  56
  57 static inline void btrfs_init_ref_verify(struct btrfs_fs_info *fs_info)
  58 {
  59 }
  60
  61 #endif /* CONFIG_BTRFS_FS_REF_VERIFY */
  62 #endif /* _REF_VERIFY__ */