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1 | /* |
2 | * Copyright (C) 2008 Oracle. 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 __REFCACHE__ |
19 | #define __REFCACHE__ |
20 | |
21 | struct btrfs_extent_info { |
22 | /* bytenr and num_bytes find the extent in the extent allocation tree */ |
23 | u64 bytenr; |
24 | u64 num_bytes; |
25 | |
26 | /* objectid and offset find the back reference for the file */ |
27 | u64 objectid; |
28 | u64 offset; |
29 | }; |
30 | |
31 | struct btrfs_leaf_ref { |
32 | struct rb_node rb_node; |
33 | struct btrfs_leaf_ref_tree *tree; |
34 | int in_tree; |
35 | atomic_t usage; |
36 | |
37 | u64 root_gen; |
38 | u64 bytenr; |
39 | u64 owner; |
40 | u64 generation; |
41 | int nritems; |
42 | |
43 | struct list_head list; |
44 | struct btrfs_extent_info extents[]; |
45 | }; |
46 | |
47 | static inline size_t btrfs_leaf_ref_size(int nr_extents) |
48 | { |
49 | return sizeof(struct btrfs_leaf_ref) + |
50 | sizeof(struct btrfs_extent_info) * nr_extents; |
51 | } |
52 | #endif |
53 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
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jz-3.6-rc2-pwm
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jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9