2 * Copyright (C) 2007 Oracle. All rights reserved.
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.
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.
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.
19 #ifndef __BTRFS_ORDERED_DATA__
20 #define __BTRFS_ORDERED_DATA__
22 struct btrfs_ordered_inode_tree {
28 struct btrfs_sector_sum {
33 struct btrfs_ordered_sum {
36 struct list_head list;
37 struct btrfs_sector_sum sums;
40 /* bits for the flags field */
41 #define BTRFS_ORDERED_IO_DONE 0 /* set when all the pages are written */
42 #define BTRFS_ORDERED_COMPLETE 1 /* set when removed from the tree */
43 #define BTRFS_ORDERED_START 2 /* set when tree setup */
45 struct btrfs_ordered_extent {
51 struct list_head list;
53 wait_queue_head_t wait;
54 struct rb_node rb_node;
58 static inline int btrfs_ordered_sum_size(struct btrfs_root *root, u64 bytes)
60 unsigned long num_sectors = (bytes + root->sectorsize - 1) /
62 return sizeof(struct btrfs_ordered_sum) +
63 num_sectors * sizeof(struct btrfs_sector_sum);
67 btrfs_ordered_inode_tree_init(struct btrfs_ordered_inode_tree *t)
69 mutex_init(&t->mutex);
70 t->tree.rb_node = NULL;
74 int btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry);
75 int btrfs_remove_ordered_extent(struct inode *inode,
76 struct btrfs_ordered_extent *entry);
77 int btrfs_dec_test_ordered_pending(struct inode *inode,
78 u64 file_offset, u64 io_size);
79 int btrfs_add_ordered_extent(struct inode *inode, u64 file_offset,
81 int btrfs_add_ordered_sum(struct inode *inode, struct btrfs_ordered_sum *sum);
82 struct btrfs_ordered_extent *btrfs_lookup_ordered_extent(struct inode *inode,
84 void btrfs_wait_ordered_extent(struct inode *inode,
85 struct btrfs_ordered_extent *entry);
86 void btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len);
87 struct btrfs_ordered_extent *
88 btrfs_lookup_first_ordered_extent(struct inode * inode, u64 file_offset);
89 int btrfs_add_ordered_pending(struct inode *inode,
90 struct btrfs_ordered_extent *ordered,
92 int btrfs_ordered_update_i_size(struct inode *inode,
93 struct btrfs_ordered_extent *ordered);
94 int btrfs_find_ordered_sum(struct inode *inode, u64 offset, u32 *sum);