Btrfs: introduce btrfs_show_options
[linux-2.6-block.git] / fs / btrfs / ctree.h
CommitLineData
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1/*
2 * Copyright (C) 2007 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
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19#ifndef __BTRFS_CTREE__
20#define __BTRFS_CTREE__
eb60ceac 21
6da6abae 22#include <linux/version.h>
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23#include <linux/mm.h>
24#include <linux/highmem.h>
e20d96d6 25#include <linux/fs.h>
58176a96 26#include <linux/completion.h>
04160088 27#include <linux/backing-dev.h>
e6dcd2dc 28#include <linux/wait.h>
479965d6 29#include <asm/kmap_types.h>
d1310b2e 30#include "extent_io.h"
5f39d397 31#include "extent_map.h"
8b712842 32#include "async-thread.h"
e20d96d6 33
e089f05c 34struct btrfs_trans_handle;
79154b1b 35struct btrfs_transaction;
35b7e476
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36extern struct kmem_cache *btrfs_trans_handle_cachep;
37extern struct kmem_cache *btrfs_transaction_cachep;
38extern struct kmem_cache *btrfs_bit_radix_cachep;
2c90e5d6 39extern struct kmem_cache *btrfs_path_cachep;
e6dcd2dc 40struct btrfs_ordered_sum;
e089f05c 41
2a7108ad 42#define BTRFS_MAGIC "_BHRfS_M"
eb60ceac 43
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44#define BTRFS_ACL_NOT_CACHED ((void *)-1)
45
4008c04a 46#define BTRFS_MAX_LEVEL 8
0b86a832 47
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48/*
49 * files bigger than this get some pre-flushing when they are added
50 * to the ordered operations list. That way we limit the total
51 * work done by the commit
52 */
53#define BTRFS_ORDERED_OPERATIONS_FLUSH_LIMIT (8 * 1024 * 1024)
54
0b86a832 55/* holds pointers to all of the tree roots */
6407bf6d 56#define BTRFS_ROOT_TREE_OBJECTID 1ULL
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57
58/* stores information about which extents are in use, and reference counts */
0cf6c620 59#define BTRFS_EXTENT_TREE_OBJECTID 2ULL
0b86a832 60
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61/*
62 * chunk tree stores translations from logical -> physical block numbering
63 * the super block points to the chunk tree
64 */
e085def2 65#define BTRFS_CHUNK_TREE_OBJECTID 3ULL
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66
67/*
68 * stores information about which areas of a given device are in use.
69 * one per device. The tree of tree roots points to the device tree
70 */
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71#define BTRFS_DEV_TREE_OBJECTID 4ULL
72
73/* one per subvolume, storing files and directories */
74#define BTRFS_FS_TREE_OBJECTID 5ULL
75
76/* directory objectid inside the root tree */
77#define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL
0b86a832 78
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79/* holds checksums of all the data extents */
80#define BTRFS_CSUM_TREE_OBJECTID 7ULL
81
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82/* orhpan objectid for tracking unlinked/truncated files */
83#define BTRFS_ORPHAN_OBJECTID -5ULL
84
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85/* does write ahead logging to speed up fsyncs */
86#define BTRFS_TREE_LOG_OBJECTID -6ULL
87#define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL
88
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89/* for space balancing */
90#define BTRFS_TREE_RELOC_OBJECTID -8ULL
91#define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL
92
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93/*
94 * extent checksums all have this objectid
95 * this allows them to share the logging tree
96 * for fsyncs
97 */
98#define BTRFS_EXTENT_CSUM_OBJECTID -10ULL
99
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100/* dummy objectid represents multiple objectids */
101#define BTRFS_MULTIPLE_OBJECTIDS -255ULL
102
0b86a832 103/*
6527cdbe 104 * All files have objectids in this range.
0b86a832 105 */
f6dbff55 106#define BTRFS_FIRST_FREE_OBJECTID 256ULL
6527cdbe 107#define BTRFS_LAST_FREE_OBJECTID -256ULL
e17cade2 108#define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL
3768f368 109
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110
111/*
112 * the device items go into the chunk tree. The key is in the form
113 * [ 1 BTRFS_DEV_ITEM_KEY device_id ]
114 */
115#define BTRFS_DEV_ITEMS_OBJECTID 1ULL
116
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117/*
118 * we can actually store much bigger names, but lets not confuse the rest
119 * of linux
120 */
121#define BTRFS_NAME_LEN 255
122
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123/* 32 bytes in various csum fields */
124#define BTRFS_CSUM_SIZE 32
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125
126/* csum types */
127#define BTRFS_CSUM_TYPE_CRC32 0
128
129static int btrfs_csum_sizes[] = { 4, 0 };
130
509659cd 131/* four bytes for CRC32 */
3954401f 132#define BTRFS_EMPTY_DIR_SIZE 0
f254e52c 133
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134#define BTRFS_FT_UNKNOWN 0
135#define BTRFS_FT_REG_FILE 1
136#define BTRFS_FT_DIR 2
137#define BTRFS_FT_CHRDEV 3
138#define BTRFS_FT_BLKDEV 4
139#define BTRFS_FT_FIFO 5
140#define BTRFS_FT_SOCK 6
141#define BTRFS_FT_SYMLINK 7
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142#define BTRFS_FT_XATTR 8
143#define BTRFS_FT_MAX 9
fabb5681 144
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145/*
146 * the key defines the order in the tree, and so it also defines (optimal)
147 * block layout. objectid corresonds to the inode number. The flags
148 * tells us things about the object, and is a kind of stream selector.
149 * so for a given inode, keys with flags of 1 might refer to the inode
150 * data, flags of 2 may point to file data in the btree and flags == 3
151 * may point to extents.
152 *
153 * offset is the starting byte offset for this key in the stream.
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154 *
155 * btrfs_disk_key is in disk byte order. struct btrfs_key is always
156 * in cpu native order. Otherwise they are identical and their sizes
157 * should be the same (ie both packed)
fec577fb 158 */
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159struct btrfs_disk_key {
160 __le64 objectid;
5f39d397 161 u8 type;
70b2befd 162 __le64 offset;
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163} __attribute__ ((__packed__));
164
165struct btrfs_key {
eb60ceac 166 u64 objectid;
5f39d397 167 u8 type;
70b2befd 168 u64 offset;
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169} __attribute__ ((__packed__));
170
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171struct btrfs_mapping_tree {
172 struct extent_map_tree map_tree;
173};
174
e17cade2 175#define BTRFS_UUID_SIZE 16
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176struct btrfs_dev_item {
177 /* the internal btrfs device id */
178 __le64 devid;
179
180 /* size of the device */
181 __le64 total_bytes;
182
183 /* bytes used */
184 __le64 bytes_used;
185
186 /* optimal io alignment for this device */
187 __le32 io_align;
188
189 /* optimal io width for this device */
190 __le32 io_width;
191
192 /* minimal io size for this device */
193 __le32 sector_size;
194
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195 /* type and info about this device */
196 __le64 type;
197
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198 /* expected generation for this device */
199 __le64 generation;
200
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201 /*
202 * starting byte of this partition on the device,
203 * to allowr for stripe alignment in the future
204 */
205 __le64 start_offset;
206
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207 /* grouping information for allocation decisions */
208 __le32 dev_group;
209
210 /* seek speed 0-100 where 100 is fastest */
211 u8 seek_speed;
212
213 /* bandwidth 0-100 where 100 is fastest */
214 u8 bandwidth;
215
0d81ba5d 216 /* btrfs generated uuid for this device */
e17cade2 217 u8 uuid[BTRFS_UUID_SIZE];
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218
219 /* uuid of FS who owns this device */
220 u8 fsid[BTRFS_UUID_SIZE];
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221} __attribute__ ((__packed__));
222
223struct btrfs_stripe {
224 __le64 devid;
225 __le64 offset;
e17cade2 226 u8 dev_uuid[BTRFS_UUID_SIZE];
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227} __attribute__ ((__packed__));
228
229struct btrfs_chunk {
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230 /* size of this chunk in bytes */
231 __le64 length;
232
233 /* objectid of the root referencing this chunk */
0b86a832 234 __le64 owner;
e17cade2 235
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236 __le64 stripe_len;
237 __le64 type;
238
239 /* optimal io alignment for this chunk */
240 __le32 io_align;
241
242 /* optimal io width for this chunk */
243 __le32 io_width;
244
245 /* minimal io size for this chunk */
246 __le32 sector_size;
247
248 /* 2^16 stripes is quite a lot, a second limit is the size of a single
249 * item in the btree
250 */
251 __le16 num_stripes;
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252
253 /* sub stripes only matter for raid10 */
254 __le16 sub_stripes;
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255 struct btrfs_stripe stripe;
256 /* additional stripes go here */
257} __attribute__ ((__packed__));
258
259static inline unsigned long btrfs_chunk_item_size(int num_stripes)
260{
261 BUG_ON(num_stripes == 0);
262 return sizeof(struct btrfs_chunk) +
263 sizeof(struct btrfs_stripe) * (num_stripes - 1);
264}
265
5f39d397 266#define BTRFS_FSID_SIZE 16
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267#define BTRFS_HEADER_FLAG_WRITTEN (1 << 0)
268
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269/*
270 * every tree block (leaf or node) starts with this header.
271 */
bb492bb0 272struct btrfs_header {
e17cade2 273 /* these first four must match the super block */
f254e52c 274 u8 csum[BTRFS_CSUM_SIZE];
5f39d397 275 u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */
db94535d 276 __le64 bytenr; /* which block this node is supposed to live in */
63b10fc4 277 __le64 flags;
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278
279 /* allowed to be different from the super from here on down */
280 u8 chunk_tree_uuid[BTRFS_UUID_SIZE];
7f5c1516 281 __le64 generation;
4d775673 282 __le64 owner;
5f39d397 283 __le32 nritems;
9a6f11ed 284 u8 level;
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285} __attribute__ ((__packed__));
286
5f39d397 287#define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \
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288 sizeof(struct btrfs_header)) / \
289 sizeof(struct btrfs_key_ptr))
123abc88 290#define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header))
5f39d397 291#define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize))
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292#define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \
293 sizeof(struct btrfs_item) - \
294 sizeof(struct btrfs_file_extent_item))
eb60ceac 295
2b82032c 296#define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32)
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297
298/*
299 * this is a very generous portion of the super block, giving us
300 * room to translate 14 chunks with 3 stripes each.
301 */
302#define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048
7ae9c09d 303#define BTRFS_LABEL_SIZE 256
0b86a832 304
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305/*
306 * the super block basically lists the main trees of the FS
307 * it currently lacks any block count etc etc
308 */
234b63a0 309struct btrfs_super_block {
f254e52c 310 u8 csum[BTRFS_CSUM_SIZE];
63b10fc4 311 /* the first 4 fields must match struct btrfs_header */
2b82032c 312 u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */
db94535d 313 __le64 bytenr; /* this block number */
63b10fc4 314 __le64 flags;
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315
316 /* allowed to be different from the btrfs_header from here own down */
3768f368 317 __le64 magic;
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318 __le64 generation;
319 __le64 root;
0b86a832 320 __le64 chunk_root;
e02119d5 321 __le64 log_root;
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322
323 /* this will help find the new super based on the log root */
324 __le64 log_root_transid;
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325 __le64 total_bytes;
326 __le64 bytes_used;
2e635a27 327 __le64 root_dir_objectid;
8a4b83cc 328 __le64 num_devices;
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329 __le32 sectorsize;
330 __le32 nodesize;
331 __le32 leafsize;
87ee04eb 332 __le32 stripesize;
0b86a832 333 __le32 sys_chunk_array_size;
84234f3a 334 __le64 chunk_root_generation;
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335 __le64 compat_flags;
336 __le64 compat_ro_flags;
337 __le64 incompat_flags;
607d432d 338 __le16 csum_type;
db94535d 339 u8 root_level;
0b86a832 340 u8 chunk_root_level;
e02119d5 341 u8 log_root_level;
0d81ba5d 342 struct btrfs_dev_item dev_item;
c3027eb5 343
7ae9c09d 344 char label[BTRFS_LABEL_SIZE];
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345
346 /* future expansion */
347 __le64 reserved[32];
0b86a832 348 u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE];
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349} __attribute__ ((__packed__));
350
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351/*
352 * Compat flags that we support. If any incompat flags are set other than the
353 * ones specified below then we will fail to mount
354 */
355#define BTRFS_FEATURE_COMPAT_SUPP 0x0
356#define BTRFS_FEATURE_COMPAT_RO_SUPP 0x0
357#define BTRFS_FEATURE_INCOMPAT_SUPP 0x0
358
fec577fb 359/*
62e2749e 360 * A leaf is full of items. offset and size tell us where to find
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361 * the item in the leaf (relative to the start of the data area)
362 */
0783fcfc 363struct btrfs_item {
e2fa7227 364 struct btrfs_disk_key key;
123abc88 365 __le32 offset;
5f39d397 366 __le32 size;
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367} __attribute__ ((__packed__));
368
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369/*
370 * leaves have an item area and a data area:
371 * [item0, item1....itemN] [free space] [dataN...data1, data0]
372 *
373 * The data is separate from the items to get the keys closer together
374 * during searches.
375 */
234b63a0 376struct btrfs_leaf {
bb492bb0 377 struct btrfs_header header;
123abc88 378 struct btrfs_item items[];
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379} __attribute__ ((__packed__));
380
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381/*
382 * all non-leaf blocks are nodes, they hold only keys and pointers to
383 * other blocks
384 */
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385struct btrfs_key_ptr {
386 struct btrfs_disk_key key;
387 __le64 blockptr;
74493f7a 388 __le64 generation;
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389} __attribute__ ((__packed__));
390
234b63a0 391struct btrfs_node {
bb492bb0 392 struct btrfs_header header;
123abc88 393 struct btrfs_key_ptr ptrs[];
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394} __attribute__ ((__packed__));
395
fec577fb 396/*
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397 * btrfs_paths remember the path taken from the root down to the leaf.
398 * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point
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399 * to any other levels that are present.
400 *
401 * The slots array records the index of the item or block pointer
402 * used while walking the tree.
403 */
234b63a0 404struct btrfs_path {
5f39d397 405 struct extent_buffer *nodes[BTRFS_MAX_LEVEL];
234b63a0 406 int slots[BTRFS_MAX_LEVEL];
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407 /* if there is real range locking, this locks field will change */
408 int locks[BTRFS_MAX_LEVEL];
3c69faec 409 int reada;
925baedd 410 /* keep some upper locks as we walk down */
6702ed49 411 int lowest_level;
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412
413 /*
414 * set by btrfs_split_item, tells search_slot to keep all locks
415 * and to force calls to keep space in the nodes
416 */
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417 unsigned int search_for_split:1;
418 unsigned int keep_locks:1;
419 unsigned int skip_locking:1;
420 unsigned int leave_spinning:1;
eb60ceac 421};
5de08d7d 422
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423/*
424 * items in the extent btree are used to record the objectid of the
425 * owner of the block and the number of references
426 */
427struct btrfs_extent_item {
428 __le32 refs;
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CM
429} __attribute__ ((__packed__));
430
431struct btrfs_extent_ref {
432 __le64 root;
433 __le64 generation;
434 __le64 objectid;
31840ae1 435 __le32 num_refs;
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436} __attribute__ ((__packed__));
437
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438/* dev extents record free space on individual devices. The owner
439 * field points back to the chunk allocation mapping tree that allocated
e17cade2 440 * the extent. The chunk tree uuid field is a way to double check the owner
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441 */
442struct btrfs_dev_extent {
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443 __le64 chunk_tree;
444 __le64 chunk_objectid;
445 __le64 chunk_offset;
0b86a832 446 __le64 length;
e17cade2 447 u8 chunk_tree_uuid[BTRFS_UUID_SIZE];
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448} __attribute__ ((__packed__));
449
3954401f 450struct btrfs_inode_ref {
aec7477b 451 __le64 index;
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452 __le16 name_len;
453 /* name goes here */
454} __attribute__ ((__packed__));
455
0b86a832 456struct btrfs_timespec {
f254e52c 457 __le64 sec;
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458 __le32 nsec;
459} __attribute__ ((__packed__));
460
95029d7d 461enum btrfs_compression_type {
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462 BTRFS_COMPRESS_NONE = 0,
463 BTRFS_COMPRESS_ZLIB = 1,
464 BTRFS_COMPRESS_LAST = 2,
95029d7d 465};
c8b97818 466
1e1d2701 467struct btrfs_inode_item {
e02119d5 468 /* nfs style generation number */
1e1d2701 469 __le64 generation;
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470 /* transid that last touched this inode */
471 __le64 transid;
1e1d2701 472 __le64 size;
a76a3cd4 473 __le64 nbytes;
31f3c99b 474 __le64 block_group;
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475 __le32 nlink;
476 __le32 uid;
477 __le32 gid;
478 __le32 mode;
0b86a832 479 __le64 rdev;
f2b636e8 480 __le64 flags;
c8b97818 481
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482 /* modification sequence number for NFS */
483 __le64 sequence;
484
485 /*
486 * a little future expansion, for more than this we can
487 * just grow the inode item and version it
488 */
489 __le64 reserved[4];
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490 struct btrfs_timespec atime;
491 struct btrfs_timespec ctime;
492 struct btrfs_timespec mtime;
493 struct btrfs_timespec otime;
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494} __attribute__ ((__packed__));
495
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496struct btrfs_dir_log_item {
497 __le64 end;
498} __attribute__ ((__packed__));
499
62e2749e 500struct btrfs_dir_item {
d6e4a428 501 struct btrfs_disk_key location;
e02119d5 502 __le64 transid;
5103e947 503 __le16 data_len;
a8a2ee0c 504 __le16 name_len;
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505 u8 type;
506} __attribute__ ((__packed__));
507
508struct btrfs_root_item {
d6e4a428 509 struct btrfs_inode_item inode;
84234f3a 510 __le64 generation;
d6e4a428 511 __le64 root_dirid;
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512 __le64 bytenr;
513 __le64 byte_limit;
514 __le64 bytes_used;
80ff3856 515 __le64 last_snapshot;
f2b636e8 516 __le64 flags;
62e2749e 517 __le32 refs;
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518 struct btrfs_disk_key drop_progress;
519 u8 drop_level;
db94535d 520 u8 level;
9f5fae2f 521} __attribute__ ((__packed__));
62e2749e 522
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523/*
524 * this is used for both forward and backward root refs
525 */
526struct btrfs_root_ref {
527 __le64 dirid;
528 __le64 sequence;
529 __le16 name_len;
530} __attribute__ ((__packed__));
531
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532#define BTRFS_FILE_EXTENT_INLINE 0
533#define BTRFS_FILE_EXTENT_REG 1
534#define BTRFS_FILE_EXTENT_PREALLOC 2
236454df 535
9f5fae2f 536struct btrfs_file_extent_item {
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537 /*
538 * transaction id that created this extent
539 */
71951f35 540 __le64 generation;
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541 /*
542 * max number of bytes to hold this extent in ram
543 * when we split a compressed extent we can't know how big
544 * each of the resulting pieces will be. So, this is
545 * an upper limit on the size of the extent in ram instead of
546 * an exact limit.
547 */
548 __le64 ram_bytes;
549
550 /*
551 * 32 bits for the various ways we might encode the data,
552 * including compression and encryption. If any of these
553 * are set to something a given disk format doesn't understand
554 * it is treated like an incompat flag for reading and writing,
555 * but not for stat.
556 */
557 u8 compression;
558 u8 encryption;
559 __le16 other_encoding; /* spare for later use */
560
561 /* are we inline data or a real extent? */
236454df 562 u8 type;
c8b97818 563
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564 /*
565 * disk space consumed by the extent, checksum blocks are included
566 * in these numbers
567 */
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568 __le64 disk_bytenr;
569 __le64 disk_num_bytes;
9f5fae2f 570 /*
dee26a9f 571 * the logical offset in file blocks (no csums)
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CM
572 * this extent record is for. This allows a file extent to point
573 * into the middle of an existing extent on disk, sharing it
574 * between two snapshots (useful if some bytes in the middle of the
575 * extent have changed
576 */
577 __le64 offset;
578 /*
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579 * the logical number of file blocks (no csums included). This
580 * always reflects the size uncompressed and without encoding.
9f5fae2f 581 */
db94535d 582 __le64 num_bytes;
c8b97818 583
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584} __attribute__ ((__packed__));
585
f254e52c 586struct btrfs_csum_item {
509659cd 587 u8 csum;
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588} __attribute__ ((__packed__));
589
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590/* different types of block groups (and chunks) */
591#define BTRFS_BLOCK_GROUP_DATA (1 << 0)
592#define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1)
593#define BTRFS_BLOCK_GROUP_METADATA (1 << 2)
593060d7 594#define BTRFS_BLOCK_GROUP_RAID0 (1 << 3)
8790d502 595#define BTRFS_BLOCK_GROUP_RAID1 (1 << 4)
611f0e00 596#define BTRFS_BLOCK_GROUP_DUP (1 << 5)
321aecc6 597#define BTRFS_BLOCK_GROUP_RAID10 (1 << 6)
1e2677e0 598
9078a3e1
CM
599struct btrfs_block_group_item {
600 __le64 used;
0b86a832
CM
601 __le64 chunk_objectid;
602 __le64 flags;
9078a3e1
CM
603} __attribute__ ((__packed__));
604
6324fbf3
CM
605struct btrfs_space_info {
606 u64 flags;
6a63209f
JB
607
608 u64 total_bytes; /* total bytes in the space */
609 u64 bytes_used; /* total bytes used on disk */
610 u64 bytes_pinned; /* total bytes pinned, will be freed when the
611 transaction finishes */
612 u64 bytes_reserved; /* total bytes the allocator has reserved for
613 current allocations */
614 u64 bytes_readonly; /* total bytes that are read only */
615
616 /* delalloc accounting */
617 u64 bytes_delalloc; /* number of bytes reserved for allocation,
618 this space is not necessarily reserved yet
619 by the allocator */
620 u64 bytes_may_use; /* number of bytes that may be used for
621 delalloc */
622
623 int full; /* indicates that we cannot allocate any more
624 chunks for this space */
625 int force_alloc; /* set if we need to force a chunk alloc for
626 this space */
627
6324fbf3 628 struct list_head list;
0f9dd46c
JB
629
630 /* for block groups in our same type */
631 struct list_head block_groups;
632 spinlock_t lock;
80eb234a 633 struct rw_semaphore groups_sem;
0f9dd46c
JB
634};
635
fa9c0d79
CM
636/*
637 * free clusters are used to claim free space in relatively large chunks,
638 * allowing us to do less seeky writes. They are used for all metadata
639 * allocations and data allocations in ssd mode.
640 */
641struct btrfs_free_cluster {
642 spinlock_t lock;
643 spinlock_t refill_lock;
644 struct rb_root root;
645
646 /* largest extent in this cluster */
647 u64 max_size;
648
649 /* first extent starting offset */
650 u64 window_start;
651
652 struct btrfs_block_group_cache *block_group;
653 /*
654 * when a cluster is allocated from a block group, we put the
655 * cluster onto a list in the block group so that it can
656 * be freed before the block group is freed.
657 */
658 struct list_head block_group_list;
6324fbf3
CM
659};
660
9078a3e1
CM
661struct btrfs_block_group_cache {
662 struct btrfs_key key;
663 struct btrfs_block_group_item item;
c286ac48 664 spinlock_t lock;
ea6a478e 665 struct mutex cache_mutex;
324ae4df 666 u64 pinned;
e8569813 667 u64 reserved;
0b86a832
CM
668 u64 flags;
669 int cached;
8f18cf13 670 int ro;
0f9dd46c
JB
671 int dirty;
672
673 struct btrfs_space_info *space_info;
674
675 /* free space cache stuff */
6226cb0a 676 spinlock_t tree_lock;
0f9dd46c
JB
677 struct rb_root free_space_bytes;
678 struct rb_root free_space_offset;
679
680 /* block group cache stuff */
681 struct rb_node cache_node;
682
683 /* for block groups in the same raid type */
684 struct list_head list;
d2fb3437
YZ
685
686 /* usage count */
687 atomic_t count;
fa9c0d79
CM
688
689 /* List of struct btrfs_free_clusters for this block group.
690 * Today it will only have one thing on it, but that may change
691 */
692 struct list_head cluster_list;
9078a3e1 693};
0b86a832 694
e4657689
ZY
695struct btrfs_leaf_ref_tree {
696 struct rb_root root;
697 struct list_head list;
698 spinlock_t lock;
699};
700
0b86a832 701struct btrfs_device;
8a4b83cc 702struct btrfs_fs_devices;
9f5fae2f 703struct btrfs_fs_info {
5f39d397 704 u8 fsid[BTRFS_FSID_SIZE];
e17cade2 705 u8 chunk_tree_uuid[BTRFS_UUID_SIZE];
62e2749e
CM
706 struct btrfs_root *extent_root;
707 struct btrfs_root *tree_root;
0b86a832
CM
708 struct btrfs_root *chunk_root;
709 struct btrfs_root *dev_root;
3de4586c 710 struct btrfs_root *fs_root;
d20f7043 711 struct btrfs_root *csum_root;
e02119d5
CM
712
713 /* the log root tree is a directory of all the other log roots */
714 struct btrfs_root *log_root_tree;
0f7d52f4 715 struct radix_tree_root fs_roots_radix;
1a5bc167 716
0f9dd46c
JB
717 /* block group cache stuff */
718 spinlock_t block_group_cache_lock;
719 struct rb_root block_group_cache_tree;
720
d1310b2e 721 struct extent_io_tree pinned_extents;
1a5bc167 722
0b86a832
CM
723 /* logical->physical extent mapping */
724 struct btrfs_mapping_tree mapping_tree;
725
293ffd5f 726 u64 generation;
15ee9bc7 727 u64 last_trans_committed;
12fcfd22
CM
728
729 /*
730 * this is updated to the current trans every time a full commit
731 * is required instead of the faster short fsync log commits
732 */
733 u64 last_trans_log_full_commit;
9ca9ee09 734 u64 open_ioctl_trans;
b6cda9bc 735 unsigned long mount_opt;
c59f8951 736 u64 max_extent;
6f568d35 737 u64 max_inline;
8f662a76 738 u64 alloc_start;
79154b1b 739 struct btrfs_transaction *running_transaction;
e6dcd2dc 740 wait_queue_head_t transaction_throttle;
f9295749 741 wait_queue_head_t transaction_wait;
771ed689 742 wait_queue_head_t async_submit_wait;
e02119d5 743
4b52dff6 744 struct btrfs_super_block super_copy;
a061fc8d 745 struct btrfs_super_block super_for_commit;
0b86a832 746 struct block_device *__bdev;
e20d96d6 747 struct super_block *sb;
d98237b3 748 struct inode *btree_inode;
04160088 749 struct backing_dev_info bdi;
79154b1b 750 struct mutex trans_mutex;
e02119d5 751 struct mutex tree_log_mutex;
a74a4b97
CM
752 struct mutex transaction_kthread_mutex;
753 struct mutex cleaner_mutex;
925baedd 754 struct mutex chunk_mutex;
a2135011 755 struct mutex drop_mutex;
7d9eb12c 756 struct mutex volume_mutex;
1a40e23b 757 struct mutex tree_reloc_mutex;
c3e69d58 758
5a3f23d5
CM
759 /*
760 * this protects the ordered operations list only while we are
761 * processing all of the entries on it. This way we make
762 * sure the commit code doesn't find the list temporarily empty
763 * because another function happens to be doing non-waiting preflush
764 * before jumping into the main commit.
765 */
766 struct mutex ordered_operations_mutex;
767
8fd17795 768 struct list_head trans_list;
19c00ddc 769 struct list_head hashers;
facda1e7 770 struct list_head dead_roots;
e02119d5 771
cb03c743 772 atomic_t nr_async_submits;
8c8bee1d 773 atomic_t async_submit_draining;
0986fe9e 774 atomic_t nr_async_bios;
771ed689 775 atomic_t async_delalloc_pages;
ce9adaa5 776
3eaa2885
CM
777 /*
778 * this is used by the balancing code to wait for all the pending
779 * ordered extents
780 */
781 spinlock_t ordered_extent_lock;
5a3f23d5
CM
782
783 /*
784 * all of the data=ordered extents pending writeback
785 * these can span multiple transactions and basically include
786 * every dirty data page that isn't from nodatacow
787 */
3eaa2885 788 struct list_head ordered_extents;
5a3f23d5
CM
789
790 /*
791 * all of the inodes that have delalloc bytes. It is possible for
792 * this list to be empty even when there is still dirty data=ordered
793 * extents waiting to finish IO.
794 */
ea8c2819 795 struct list_head delalloc_inodes;
3eaa2885 796
5a3f23d5
CM
797 /*
798 * special rename and truncate targets that must be on disk before
799 * we're allowed to commit. This is basically the ext3 style
800 * data=ordered list.
801 */
802 struct list_head ordered_operations;
803
8b712842
CM
804 /*
805 * there is a pool of worker threads for checksumming during writes
806 * and a pool for checksumming after reads. This is because readers
807 * can run with FS locks held, and the writers may be waiting for
808 * those locks. We don't want ordering in the pending list to cause
809 * deadlocks, and so the two are serviced separately.
1cc127b5
CM
810 *
811 * A third pool does submit_bio to avoid deadlocking with the other
812 * two
8b712842
CM
813 */
814 struct btrfs_workers workers;
771ed689 815 struct btrfs_workers delalloc_workers;
8b712842 816 struct btrfs_workers endio_workers;
d20f7043 817 struct btrfs_workers endio_meta_workers;
cad321ad 818 struct btrfs_workers endio_meta_write_workers;
e6dcd2dc 819 struct btrfs_workers endio_write_workers;
1cc127b5 820 struct btrfs_workers submit_workers;
247e743c
CM
821 /*
822 * fixup workers take dirty pages that didn't properly go through
823 * the cow mechanism and make them safe to write. It happens
824 * for the sys_munmap function call path
825 */
826 struct btrfs_workers fixup_workers;
a74a4b97
CM
827 struct task_struct *transaction_kthread;
828 struct task_struct *cleaner_kthread;
4543df7e 829 int thread_pool_size;
8b712842 830
1a40e23b 831 /* tree relocation relocated fields */
1a40e23b
ZY
832 struct list_head dead_reloc_roots;
833 struct btrfs_leaf_ref_tree reloc_ref_tree;
e4657689
ZY
834 struct btrfs_leaf_ref_tree shared_ref_tree;
835
58176a96
JB
836 struct kobject super_kobj;
837 struct completion kobj_unregister;
e66f709b 838 int do_barriers;
facda1e7 839 int closing;
e02119d5 840 int log_root_recovering;
a2135011 841 atomic_t throttles;
ab78c84d 842 atomic_t throttle_gen;
9f5fae2f 843
324ae4df 844 u64 total_pinned;
b9473439
CM
845
846 /* protected by the delalloc lock, used to keep from writing
847 * metadata until there is a nice batch
848 */
849 u64 dirty_metadata_bytes;
0b86a832
CM
850 struct list_head dirty_cowonly_roots;
851
8a4b83cc 852 struct btrfs_fs_devices *fs_devices;
4184ea7f
CM
853
854 /*
855 * the space_info list is almost entirely read only. It only changes
856 * when we add a new raid type to the FS, and that happens
857 * very rarely. RCU is used to protect it.
858 */
6324fbf3 859 struct list_head space_info;
4184ea7f 860
1832a6d5 861 spinlock_t delalloc_lock;
cee36a03 862 spinlock_t new_trans_lock;
1832a6d5 863 u64 delalloc_bytes;
fa9c0d79
CM
864
865 /* data_alloc_cluster is only used in ssd mode */
866 struct btrfs_free_cluster data_alloc_cluster;
867
868 /* all metadata allocations go through this cluster */
869 struct btrfs_free_cluster meta_alloc_cluster;
d18a2c44 870
31153d81
YZ
871 spinlock_t ref_cache_lock;
872 u64 total_ref_cache_size;
31153d81 873
d18a2c44
CM
874 u64 avail_data_alloc_bits;
875 u64 avail_metadata_alloc_bits;
876 u64 avail_system_alloc_bits;
877 u64 data_alloc_profile;
878 u64 metadata_alloc_profile;
879 u64 system_alloc_profile;
788f20eb
CM
880
881 void *bdev_holder;
324ae4df 882};
0b86a832 883
9f5fae2f
CM
884/*
885 * in ram representation of the tree. extent_root is used for all allocations
f2458e1d 886 * and for the extent tree extent_root root.
9f5fae2f 887 */
f321e491 888struct btrfs_dirty_root;
9f5fae2f 889struct btrfs_root {
5f39d397 890 struct extent_buffer *node;
925baedd
CM
891
892 /* the node lock is held while changing the node pointer */
893 spinlock_t node_lock;
894
5f39d397 895 struct extent_buffer *commit_root;
31153d81 896 struct btrfs_leaf_ref_tree *ref_tree;
017e5369 897 struct btrfs_leaf_ref_tree ref_tree_struct;
f321e491 898 struct btrfs_dirty_root *dirty_root;
e02119d5 899 struct btrfs_root *log_root;
1a40e23b 900 struct btrfs_root *reloc_root;
31153d81 901
62e2749e
CM
902 struct btrfs_root_item root_item;
903 struct btrfs_key root_key;
9f5fae2f 904 struct btrfs_fs_info *fs_info;
d0c803c4
CM
905 struct extent_io_tree dirty_log_pages;
906
58176a96
JB
907 struct kobject root_kobj;
908 struct completion kobj_unregister;
a2135011 909 struct mutex objectid_mutex;
7237f183 910
e02119d5 911 struct mutex log_mutex;
7237f183
YZ
912 wait_queue_head_t log_writer_wait;
913 wait_queue_head_t log_commit_wait[2];
914 atomic_t log_writers;
915 atomic_t log_commit[2];
916 unsigned long log_transid;
917 unsigned long log_batch;
ea8c2819 918
0f7d52f4
CM
919 u64 objectid;
920 u64 last_trans;
5f39d397
CM
921
922 /* data allocations are done in sectorsize units */
923 u32 sectorsize;
924
925 /* node allocations are done in nodesize units */
926 u32 nodesize;
927
928 /* leaf allocations are done in leafsize units */
929 u32 leafsize;
930
87ee04eb
CM
931 u32 stripesize;
932
9f5fae2f 933 u32 type;
1b05da2e
CM
934 u64 highest_inode;
935 u64 last_inode_alloc;
9f3a7427 936 int ref_cows;
0b86a832 937 int track_dirty;
3f157a2f 938 u64 defrag_trans_start;
6702ed49 939 struct btrfs_key defrag_progress;
0ef3e66b 940 struct btrfs_key defrag_max;
6702ed49
CM
941 int defrag_running;
942 int defrag_level;
58176a96 943 char *name;
4313b399 944 int in_sysfs;
0b86a832
CM
945
946 /* the dirty list is only used by non-reference counted roots */
947 struct list_head dirty_list;
7b128766 948
bcc63abb
Y
949 spinlock_t list_lock;
950 struct list_head dead_list;
7b128766 951 struct list_head orphan_list;
3394e160
CM
952
953 /*
954 * right now this just gets used so that a root has its own devid
955 * for stat. It may be used for more later
956 */
957 struct super_block anon_super;
62e2749e
CM
958};
959
1e1d2701 960/*
0b86a832 961
1e1d2701
CM
962 * inode items have the data typically returned from stat and store other
963 * info about object characteristics. There is one for every file and dir in
964 * the FS
965 */
9078a3e1 966#define BTRFS_INODE_ITEM_KEY 1
0660b5af
CM
967#define BTRFS_INODE_REF_KEY 12
968#define BTRFS_XATTR_ITEM_KEY 24
969#define BTRFS_ORPHAN_ITEM_KEY 48
9078a3e1 970/* reserve 2-15 close to the inode for later flexibility */
1e1d2701
CM
971
972/*
973 * dir items are the name -> inode pointers in a directory. There is one
974 * for every name in a directory.
975 */
0660b5af
CM
976#define BTRFS_DIR_LOG_ITEM_KEY 60
977#define BTRFS_DIR_LOG_INDEX_KEY 72
978#define BTRFS_DIR_ITEM_KEY 84
979#define BTRFS_DIR_INDEX_KEY 96
1e1d2701 980/*
9078a3e1 981 * extent data is for file data
1e1d2701 982 */
0660b5af 983#define BTRFS_EXTENT_DATA_KEY 108
d20f7043 984
f254e52c 985/*
d20f7043
CM
986 * extent csums are stored in a separate tree and hold csums for
987 * an entire extent on disk.
f254e52c 988 */
d20f7043 989#define BTRFS_EXTENT_CSUM_KEY 128
f254e52c 990
1e1d2701
CM
991/*
992 * root items point to tree roots. There are typically in the root
993 * tree used by the super block to find all the other trees
994 */
0660b5af
CM
995#define BTRFS_ROOT_ITEM_KEY 132
996
997/*
998 * root backrefs tie subvols and snapshots to the directory entries that
999 * reference them
1000 */
1001#define BTRFS_ROOT_BACKREF_KEY 144
1002
1003/*
1004 * root refs make a fast index for listing all of the snapshots and
1005 * subvolumes referenced by a given root. They point directly to the
1006 * directory item in the root that references the subvol
1007 */
1008#define BTRFS_ROOT_REF_KEY 156
1009
1e1d2701
CM
1010/*
1011 * extent items are in the extent map tree. These record which blocks
1012 * are used, and how many references there are to each block
1013 */
0660b5af
CM
1014#define BTRFS_EXTENT_ITEM_KEY 168
1015#define BTRFS_EXTENT_REF_KEY 180
9078a3e1
CM
1016
1017/*
1018 * block groups give us hints into the extent allocation trees. Which
1019 * blocks are free etc etc
1020 */
0660b5af 1021#define BTRFS_BLOCK_GROUP_ITEM_KEY 192
9f5fae2f 1022
0660b5af
CM
1023#define BTRFS_DEV_EXTENT_KEY 204
1024#define BTRFS_DEV_ITEM_KEY 216
1025#define BTRFS_CHUNK_ITEM_KEY 228
0b86a832 1026
1e1d2701
CM
1027/*
1028 * string items are for debugging. They just store a short string of
1029 * data in the FS
1030 */
9078a3e1
CM
1031#define BTRFS_STRING_ITEM_KEY 253
1032
21ad10cf
CM
1033#define BTRFS_MOUNT_NODATASUM (1 << 0)
1034#define BTRFS_MOUNT_NODATACOW (1 << 1)
1035#define BTRFS_MOUNT_NOBARRIER (1 << 2)
e18e4809 1036#define BTRFS_MOUNT_SSD (1 << 3)
dfe25020 1037#define BTRFS_MOUNT_DEGRADED (1 << 4)
c8b97818 1038#define BTRFS_MOUNT_COMPRESS (1 << 5)
b6cda9bc
CM
1039
1040#define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt)
1041#define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt)
1042#define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \
1043 BTRFS_MOUNT_##opt)
b98b6767
Y
1044/*
1045 * Inode flags
1046 */
fdebe2bd
Y
1047#define BTRFS_INODE_NODATASUM (1 << 0)
1048#define BTRFS_INODE_NODATACOW (1 << 1)
1049#define BTRFS_INODE_READONLY (1 << 2)
c8b97818 1050#define BTRFS_INODE_NOCOMPRESS (1 << 3)
d899e052 1051#define BTRFS_INODE_PREALLOC (1 << 4)
b98b6767
Y
1052#define btrfs_clear_flag(inode, flag) (BTRFS_I(inode)->flags &= \
1053 ~BTRFS_INODE_##flag)
1054#define btrfs_set_flag(inode, flag) (BTRFS_I(inode)->flags |= \
1055 BTRFS_INODE_##flag)
1056#define btrfs_test_flag(inode, flag) (BTRFS_I(inode)->flags & \
1057 BTRFS_INODE_##flag)
5f39d397
CM
1058/* some macros to generate set/get funcs for the struct fields. This
1059 * assumes there is a lefoo_to_cpu for every type, so lets make a simple
1060 * one for u8:
1061 */
1062#define le8_to_cpu(v) (v)
1063#define cpu_to_le8(v) (v)
1064#define __le8 u8
1065
1066#define read_eb_member(eb, ptr, type, member, result) ( \
1067 read_extent_buffer(eb, (char *)(result), \
1068 ((unsigned long)(ptr)) + \
1069 offsetof(type, member), \
1070 sizeof(((type *)0)->member)))
1071
1072#define write_eb_member(eb, ptr, type, member, result) ( \
1073 write_extent_buffer(eb, (char *)(result), \
1074 ((unsigned long)(ptr)) + \
1075 offsetof(type, member), \
1076 sizeof(((type *)0)->member)))
1077
0f82731f 1078#ifndef BTRFS_SETGET_FUNCS
5f39d397 1079#define BTRFS_SETGET_FUNCS(name, type, member, bits) \
0f82731f
CM
1080u##bits btrfs_##name(struct extent_buffer *eb, type *s); \
1081void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val);
1082#endif
5f39d397
CM
1083
1084#define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \
1085static inline u##bits btrfs_##name(struct extent_buffer *eb) \
1086{ \
df68b8a7
DM
1087 type *p = kmap_atomic(eb->first_page, KM_USER0); \
1088 u##bits res = le##bits##_to_cpu(p->member); \
1089 kunmap_atomic(p, KM_USER0); \
810191ff 1090 return res; \
5f39d397
CM
1091} \
1092static inline void btrfs_set_##name(struct extent_buffer *eb, \
1093 u##bits val) \
1094{ \
df68b8a7
DM
1095 type *p = kmap_atomic(eb->first_page, KM_USER0); \
1096 p->member = cpu_to_le##bits(val); \
1097 kunmap_atomic(p, KM_USER0); \
5f39d397 1098}
9078a3e1 1099
5f39d397
CM
1100#define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
1101static inline u##bits btrfs_##name(type *s) \
1102{ \
1103 return le##bits##_to_cpu(s->member); \
1104} \
1105static inline void btrfs_set_##name(type *s, u##bits val) \
1106{ \
1107 s->member = cpu_to_le##bits(val); \
1e1d2701
CM
1108}
1109
0b86a832
CM
1110BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64);
1111BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64);
1112BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64);
1113BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32);
1114BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32);
c3027eb5
CM
1115BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item,
1116 start_offset, 64);
0b86a832
CM
1117BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32);
1118BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64);
e17cade2
CM
1119BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32);
1120BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8);
1121BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8);
2b82032c 1122BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64);
0b86a832 1123
8a4b83cc
CM
1124BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64);
1125BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item,
1126 total_bytes, 64);
1127BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item,
1128 bytes_used, 64);
1129BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item,
1130 io_align, 32);
1131BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item,
1132 io_width, 32);
1133BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item,
1134 sector_size, 32);
1135BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64);
e17cade2
CM
1136BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item,
1137 dev_group, 32);
1138BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item,
1139 seek_speed, 8);
1140BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item,
1141 bandwidth, 8);
2b82032c
YZ
1142BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item,
1143 generation, 64);
8a4b83cc 1144
0b86a832
CM
1145static inline char *btrfs_device_uuid(struct btrfs_dev_item *d)
1146{
1147 return (char *)d + offsetof(struct btrfs_dev_item, uuid);
1148}
1149
2b82032c
YZ
1150static inline char *btrfs_device_fsid(struct btrfs_dev_item *d)
1151{
1152 return (char *)d + offsetof(struct btrfs_dev_item, fsid);
1153}
1154
e17cade2 1155BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64);
0b86a832
CM
1156BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64);
1157BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64);
1158BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32);
1159BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32);
1160BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32);
1161BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64);
1162BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16);
321aecc6 1163BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16);
0b86a832
CM
1164BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64);
1165BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64);
1166
e17cade2
CM
1167static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s)
1168{
1169 return (char *)s + offsetof(struct btrfs_stripe, dev_uuid);
1170}
1171
1172BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64);
0b86a832
CM
1173BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64);
1174BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk,
1175 stripe_len, 64);
1176BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk,
1177 io_align, 32);
1178BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk,
1179 io_width, 32);
1180BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk,
1181 sector_size, 32);
1182BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64);
1183BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk,
1184 num_stripes, 16);
321aecc6
CM
1185BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk,
1186 sub_stripes, 16);
0b86a832
CM
1187BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64);
1188BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64);
1189
1190static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c,
1191 int nr)
1192{
1193 unsigned long offset = (unsigned long)c;
1194 offset += offsetof(struct btrfs_chunk, stripe);
1195 offset += nr * sizeof(struct btrfs_stripe);
1196 return (struct btrfs_stripe *)offset;
1197}
1198
a443755f
CM
1199static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr)
1200{
1201 return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr));
1202}
1203
0b86a832
CM
1204static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb,
1205 struct btrfs_chunk *c, int nr)
1206{
1207 return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr));
1208}
1209
1210static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb,
1211 struct btrfs_chunk *c, int nr,
1212 u64 val)
1213{
1214 btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val);
1215}
1216
1217static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb,
1218 struct btrfs_chunk *c, int nr)
1219{
1220 return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr));
1221}
1222
1223static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb,
1224 struct btrfs_chunk *c, int nr,
1225 u64 val)
1226{
1227 btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val);
1228}
1229
5f39d397
CM
1230/* struct btrfs_block_group_item */
1231BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item,
1232 used, 64);
1233BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item,
1234 used, 64);
0b86a832
CM
1235BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid,
1236 struct btrfs_block_group_item, chunk_objectid, 64);
e17cade2
CM
1237
1238BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid,
0b86a832
CM
1239 struct btrfs_block_group_item, chunk_objectid, 64);
1240BTRFS_SETGET_FUNCS(disk_block_group_flags,
1241 struct btrfs_block_group_item, flags, 64);
1242BTRFS_SETGET_STACK_FUNCS(block_group_flags,
1243 struct btrfs_block_group_item, flags, 64);
1e1d2701 1244
3954401f
CM
1245/* struct btrfs_inode_ref */
1246BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16);
aec7477b 1247BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64);
3954401f 1248
5f39d397
CM
1249/* struct btrfs_inode_item */
1250BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64);
c3027eb5 1251BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64);
e02119d5 1252BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64);
5f39d397 1253BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64);
a76a3cd4 1254BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64);
5f39d397
CM
1255BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64);
1256BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32);
1257BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32);
1258BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32);
1259BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32);
0b86a832 1260BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64);
f2b636e8 1261BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64);
1e1d2701 1262
0b86a832 1263static inline struct btrfs_timespec *
5f39d397 1264btrfs_inode_atime(struct btrfs_inode_item *inode_item)
1e1d2701 1265{
5f39d397
CM
1266 unsigned long ptr = (unsigned long)inode_item;
1267 ptr += offsetof(struct btrfs_inode_item, atime);
0b86a832 1268 return (struct btrfs_timespec *)ptr;
1e1d2701
CM
1269}
1270
0b86a832 1271static inline struct btrfs_timespec *
5f39d397 1272btrfs_inode_mtime(struct btrfs_inode_item *inode_item)
1e1d2701 1273{
5f39d397
CM
1274 unsigned long ptr = (unsigned long)inode_item;
1275 ptr += offsetof(struct btrfs_inode_item, mtime);
0b86a832 1276 return (struct btrfs_timespec *)ptr;
1e1d2701
CM
1277}
1278
0b86a832 1279static inline struct btrfs_timespec *
5f39d397 1280btrfs_inode_ctime(struct btrfs_inode_item *inode_item)
1e1d2701 1281{
5f39d397
CM
1282 unsigned long ptr = (unsigned long)inode_item;
1283 ptr += offsetof(struct btrfs_inode_item, ctime);
0b86a832 1284 return (struct btrfs_timespec *)ptr;
1e1d2701
CM
1285}
1286
0b86a832 1287static inline struct btrfs_timespec *
5f39d397 1288btrfs_inode_otime(struct btrfs_inode_item *inode_item)
1e1d2701 1289{
5f39d397
CM
1290 unsigned long ptr = (unsigned long)inode_item;
1291 ptr += offsetof(struct btrfs_inode_item, otime);
0b86a832 1292 return (struct btrfs_timespec *)ptr;
1e1d2701
CM
1293}
1294
0b86a832
CM
1295BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64);
1296BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32);
e20d96d6 1297
0b86a832 1298/* struct btrfs_dev_extent */
e17cade2
CM
1299BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent,
1300 chunk_tree, 64);
1301BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent,
1302 chunk_objectid, 64);
1303BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent,
1304 chunk_offset, 64);
0b86a832
CM
1305BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64);
1306
e17cade2
CM
1307static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev)
1308{
1309 unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid);
1310 return (u8 *)((unsigned long)dev + ptr);
1311}
1312
74493f7a
CM
1313/* struct btrfs_extent_ref */
1314BTRFS_SETGET_FUNCS(ref_root, struct btrfs_extent_ref, root, 64);
1315BTRFS_SETGET_FUNCS(ref_generation, struct btrfs_extent_ref, generation, 64);
1316BTRFS_SETGET_FUNCS(ref_objectid, struct btrfs_extent_ref, objectid, 64);
31840ae1 1317BTRFS_SETGET_FUNCS(ref_num_refs, struct btrfs_extent_ref, num_refs, 32);
74493f7a 1318
7bb86316
CM
1319BTRFS_SETGET_STACK_FUNCS(stack_ref_root, struct btrfs_extent_ref, root, 64);
1320BTRFS_SETGET_STACK_FUNCS(stack_ref_generation, struct btrfs_extent_ref,
74493f7a 1321 generation, 64);
7bb86316
CM
1322BTRFS_SETGET_STACK_FUNCS(stack_ref_objectid, struct btrfs_extent_ref,
1323 objectid, 64);
31840ae1
ZY
1324BTRFS_SETGET_STACK_FUNCS(stack_ref_num_refs, struct btrfs_extent_ref,
1325 num_refs, 32);
e20d96d6 1326
31840ae1
ZY
1327/* struct btrfs_extent_item */
1328BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32);
5f39d397
CM
1329BTRFS_SETGET_STACK_FUNCS(stack_extent_refs, struct btrfs_extent_item,
1330 refs, 32);
e20d96d6 1331
5f39d397
CM
1332/* struct btrfs_node */
1333BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64);
74493f7a 1334BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64);
e20d96d6 1335
5f39d397 1336static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr)
cf27e1ee 1337{
5f39d397
CM
1338 unsigned long ptr;
1339 ptr = offsetof(struct btrfs_node, ptrs) +
1340 sizeof(struct btrfs_key_ptr) * nr;
1341 return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr);
cf27e1ee
CM
1342}
1343
5f39d397
CM
1344static inline void btrfs_set_node_blockptr(struct extent_buffer *eb,
1345 int nr, u64 val)
cf27e1ee 1346{
5f39d397
CM
1347 unsigned long ptr;
1348 ptr = offsetof(struct btrfs_node, ptrs) +
1349 sizeof(struct btrfs_key_ptr) * nr;
1350 btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val);
cf27e1ee
CM
1351}
1352
74493f7a
CM
1353static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr)
1354{
1355 unsigned long ptr;
1356 ptr = offsetof(struct btrfs_node, ptrs) +
1357 sizeof(struct btrfs_key_ptr) * nr;
1358 return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr);
1359}
1360
1361static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb,
1362 int nr, u64 val)
1363{
1364 unsigned long ptr;
1365 ptr = offsetof(struct btrfs_node, ptrs) +
1366 sizeof(struct btrfs_key_ptr) * nr;
1367 btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val);
1368}
1369
810191ff 1370static inline unsigned long btrfs_node_key_ptr_offset(int nr)
4d775673 1371{
5f39d397
CM
1372 return offsetof(struct btrfs_node, ptrs) +
1373 sizeof(struct btrfs_key_ptr) * nr;
4d775673
CM
1374}
1375
e644d021
CM
1376void btrfs_node_key(struct extent_buffer *eb,
1377 struct btrfs_disk_key *disk_key, int nr);
1378
5f39d397
CM
1379static inline void btrfs_set_node_key(struct extent_buffer *eb,
1380 struct btrfs_disk_key *disk_key, int nr)
1d4f8a0c 1381{
5f39d397
CM
1382 unsigned long ptr;
1383 ptr = btrfs_node_key_ptr_offset(nr);
1384 write_eb_member(eb, (struct btrfs_key_ptr *)ptr,
1385 struct btrfs_key_ptr, key, disk_key);
1d4f8a0c
CM
1386}
1387
5f39d397
CM
1388/* struct btrfs_item */
1389BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32);
1390BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32);
4d775673 1391
5f39d397 1392static inline unsigned long btrfs_item_nr_offset(int nr)
1d4f8a0c 1393{
5f39d397
CM
1394 return offsetof(struct btrfs_leaf, items) +
1395 sizeof(struct btrfs_item) * nr;
1d4f8a0c
CM
1396}
1397
5f39d397
CM
1398static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb,
1399 int nr)
0783fcfc 1400{
5f39d397 1401 return (struct btrfs_item *)btrfs_item_nr_offset(nr);
0783fcfc
CM
1402}
1403
5f39d397
CM
1404static inline u32 btrfs_item_end(struct extent_buffer *eb,
1405 struct btrfs_item *item)
0783fcfc 1406{
5f39d397 1407 return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item);
0783fcfc
CM
1408}
1409
5f39d397 1410static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr)
0783fcfc 1411{
5f39d397 1412 return btrfs_item_end(eb, btrfs_item_nr(eb, nr));
0783fcfc
CM
1413}
1414
5f39d397 1415static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr)
0783fcfc 1416{
5f39d397 1417 return btrfs_item_offset(eb, btrfs_item_nr(eb, nr));
0783fcfc
CM
1418}
1419
5f39d397 1420static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr)
0783fcfc 1421{
5f39d397 1422 return btrfs_item_size(eb, btrfs_item_nr(eb, nr));
0783fcfc
CM
1423}
1424
5f39d397
CM
1425static inline void btrfs_item_key(struct extent_buffer *eb,
1426 struct btrfs_disk_key *disk_key, int nr)
1d4f6404 1427{
5f39d397
CM
1428 struct btrfs_item *item = btrfs_item_nr(eb, nr);
1429 read_eb_member(eb, item, struct btrfs_item, key, disk_key);
1d4f6404
CM
1430}
1431
5f39d397
CM
1432static inline void btrfs_set_item_key(struct extent_buffer *eb,
1433 struct btrfs_disk_key *disk_key, int nr)
1d4f6404 1434{
5f39d397
CM
1435 struct btrfs_item *item = btrfs_item_nr(eb, nr);
1436 write_eb_member(eb, item, struct btrfs_item, key, disk_key);
1d4f6404
CM
1437}
1438
e02119d5
CM
1439BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64);
1440
0660b5af
CM
1441/*
1442 * struct btrfs_root_ref
1443 */
1444BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64);
1445BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64);
1446BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16);
1447
5f39d397 1448/* struct btrfs_dir_item */
5103e947 1449BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16);
5f39d397
CM
1450BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8);
1451BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16);
e02119d5 1452BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64);
1d4f6404 1453
5f39d397
CM
1454static inline void btrfs_dir_item_key(struct extent_buffer *eb,
1455 struct btrfs_dir_item *item,
1456 struct btrfs_disk_key *key)
1d4f6404 1457{
5f39d397 1458 read_eb_member(eb, item, struct btrfs_dir_item, location, key);
1d4f6404
CM
1459}
1460
5f39d397
CM
1461static inline void btrfs_set_dir_item_key(struct extent_buffer *eb,
1462 struct btrfs_dir_item *item,
1463 struct btrfs_disk_key *key)
a8a2ee0c 1464{
5f39d397 1465 write_eb_member(eb, item, struct btrfs_dir_item, location, key);
a8a2ee0c
CM
1466}
1467
5f39d397
CM
1468/* struct btrfs_disk_key */
1469BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key,
1470 objectid, 64);
1471BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64);
1472BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8);
1d4f6404 1473
e2fa7227
CM
1474static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu,
1475 struct btrfs_disk_key *disk)
1476{
1477 cpu->offset = le64_to_cpu(disk->offset);
5f39d397 1478 cpu->type = disk->type;
e2fa7227
CM
1479 cpu->objectid = le64_to_cpu(disk->objectid);
1480}
1481
1482static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk,
1483 struct btrfs_key *cpu)
1484{
1485 disk->offset = cpu_to_le64(cpu->offset);
5f39d397 1486 disk->type = cpu->type;
e2fa7227
CM
1487 disk->objectid = cpu_to_le64(cpu->objectid);
1488}
1489
5f39d397
CM
1490static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb,
1491 struct btrfs_key *key, int nr)
7f5c1516 1492{
5f39d397
CM
1493 struct btrfs_disk_key disk_key;
1494 btrfs_node_key(eb, &disk_key, nr);
1495 btrfs_disk_key_to_cpu(key, &disk_key);
7f5c1516
CM
1496}
1497
5f39d397
CM
1498static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb,
1499 struct btrfs_key *key, int nr)
7f5c1516 1500{
5f39d397
CM
1501 struct btrfs_disk_key disk_key;
1502 btrfs_item_key(eb, &disk_key, nr);
1503 btrfs_disk_key_to_cpu(key, &disk_key);
7f5c1516
CM
1504}
1505
5f39d397
CM
1506static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb,
1507 struct btrfs_dir_item *item,
1508 struct btrfs_key *key)
4d775673 1509{
5f39d397
CM
1510 struct btrfs_disk_key disk_key;
1511 btrfs_dir_item_key(eb, item, &disk_key);
1512 btrfs_disk_key_to_cpu(key, &disk_key);
4d775673
CM
1513}
1514
58176a96 1515
5f39d397 1516static inline u8 btrfs_key_type(struct btrfs_key *key)
3768f368 1517{
5f39d397 1518 return key->type;
3768f368
CM
1519}
1520
5f39d397 1521static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val)
3768f368 1522{
5f39d397 1523 key->type = val;
3768f368
CM
1524}
1525
5f39d397 1526/* struct btrfs_header */
db94535d 1527BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64);
5f39d397
CM
1528BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header,
1529 generation, 64);
1530BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64);
1531BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32);
63b10fc4 1532BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64);
5f39d397 1533BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8);
0f7d52f4 1534
63b10fc4
CM
1535static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag)
1536{
1537 return (btrfs_header_flags(eb) & flag) == flag;
1538}
1539
1540static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag)
1541{
1542 u64 flags = btrfs_header_flags(eb);
1543 btrfs_set_header_flags(eb, flags | flag);
1544 return (flags & flag) == flag;
1545}
1546
1547static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag)
1548{
1549 u64 flags = btrfs_header_flags(eb);
1550 btrfs_set_header_flags(eb, flags & ~flag);
1551 return (flags & flag) == flag;
1552}
1553
5f39d397 1554static inline u8 *btrfs_header_fsid(struct extent_buffer *eb)
0f7d52f4 1555{
5f39d397
CM
1556 unsigned long ptr = offsetof(struct btrfs_header, fsid);
1557 return (u8 *)ptr;
0f7d52f4
CM
1558}
1559
e17cade2
CM
1560static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb)
1561{
1562 unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid);
1563 return (u8 *)ptr;
1564}
1565
5f39d397 1566static inline u8 *btrfs_super_fsid(struct extent_buffer *eb)
3768f368 1567{
5f39d397
CM
1568 unsigned long ptr = offsetof(struct btrfs_super_block, fsid);
1569 return (u8 *)ptr;
3768f368
CM
1570}
1571
5f39d397 1572static inline u8 *btrfs_header_csum(struct extent_buffer *eb)
3768f368 1573{
5f39d397
CM
1574 unsigned long ptr = offsetof(struct btrfs_header, csum);
1575 return (u8 *)ptr;
3768f368
CM
1576}
1577
5f39d397 1578static inline struct btrfs_node *btrfs_buffer_node(struct extent_buffer *eb)
3768f368 1579{
5f39d397 1580 return NULL;
3768f368
CM
1581}
1582
5f39d397 1583static inline struct btrfs_leaf *btrfs_buffer_leaf(struct extent_buffer *eb)
3768f368 1584{
5f39d397 1585 return NULL;
3768f368
CM
1586}
1587
5f39d397 1588static inline struct btrfs_header *btrfs_buffer_header(struct extent_buffer *eb)
3768f368 1589{
5f39d397 1590 return NULL;
3768f368
CM
1591}
1592
5f39d397 1593static inline int btrfs_is_leaf(struct extent_buffer *eb)
3768f368 1594{
d397712b 1595 return btrfs_header_level(eb) == 0;
3768f368
CM
1596}
1597
5f39d397 1598/* struct btrfs_root_item */
84234f3a
YZ
1599BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item,
1600 generation, 64);
5f39d397 1601BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32);
db94535d
CM
1602BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64);
1603BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8);
3768f368 1604
84234f3a
YZ
1605BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item,
1606 generation, 64);
db94535d
CM
1607BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64);
1608BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8);
5f39d397
CM
1609BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64);
1610BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32);
f2b636e8 1611BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64);
db94535d
CM
1612BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64);
1613BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64);
80ff3856
YZ
1614BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item,
1615 last_snapshot, 64);
123abc88 1616
5f39d397 1617/* struct btrfs_super_block */
607d432d 1618
db94535d 1619BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64);
a061fc8d 1620BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64);
5f39d397
CM
1621BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block,
1622 generation, 64);
1623BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64);
0b86a832
CM
1624BTRFS_SETGET_STACK_FUNCS(super_sys_array_size,
1625 struct btrfs_super_block, sys_chunk_array_size, 32);
84234f3a
YZ
1626BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation,
1627 struct btrfs_super_block, chunk_root_generation, 64);
db94535d
CM
1628BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block,
1629 root_level, 8);
0b86a832
CM
1630BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block,
1631 chunk_root, 64);
1632BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block,
e02119d5
CM
1633 chunk_root_level, 8);
1634BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block,
1635 log_root, 64);
c3027eb5
CM
1636BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block,
1637 log_root_transid, 64);
e02119d5
CM
1638BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block,
1639 log_root_level, 8);
db94535d
CM
1640BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block,
1641 total_bytes, 64);
1642BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block,
1643 bytes_used, 64);
5f39d397
CM
1644BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block,
1645 sectorsize, 32);
1646BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block,
1647 nodesize, 32);
1648BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block,
1649 leafsize, 32);
87ee04eb
CM
1650BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block,
1651 stripesize, 32);
5f39d397
CM
1652BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block,
1653 root_dir_objectid, 64);
8a4b83cc
CM
1654BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block,
1655 num_devices, 64);
f2b636e8
JB
1656BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block,
1657 compat_flags, 64);
1658BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block,
1659 compat_flags, 64);
1660BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block,
1661 incompat_flags, 64);
607d432d
JB
1662BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block,
1663 csum_type, 16);
1664
1665static inline int btrfs_super_csum_size(struct btrfs_super_block *s)
1666{
1667 int t = btrfs_super_csum_type(s);
1668 BUG_ON(t >= ARRAY_SIZE(btrfs_csum_sizes));
1669 return btrfs_csum_sizes[t];
1670}
2e635a27 1671
5f39d397 1672static inline unsigned long btrfs_leaf_data(struct extent_buffer *l)
2e635a27 1673{
5f39d397 1674 return offsetof(struct btrfs_leaf, items);
2e635a27
CM
1675}
1676
5f39d397
CM
1677/* struct btrfs_file_extent_item */
1678BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8);
9f5fae2f 1679
d397712b
CM
1680static inline unsigned long
1681btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e)
236454df 1682{
5f39d397 1683 unsigned long offset = (unsigned long)e;
db94535d 1684 offset += offsetof(struct btrfs_file_extent_item, disk_bytenr);
5f39d397 1685 return offset;
236454df
CM
1686}
1687
1688static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize)
1689{
db94535d 1690 return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize;
9f5fae2f
CM
1691}
1692
db94535d
CM
1693BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item,
1694 disk_bytenr, 64);
5f39d397
CM
1695BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item,
1696 generation, 64);
db94535d
CM
1697BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item,
1698 disk_num_bytes, 64);
5f39d397
CM
1699BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item,
1700 offset, 64);
db94535d
CM
1701BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item,
1702 num_bytes, 64);
c8b97818
CM
1703BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item,
1704 ram_bytes, 64);
1705BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item,
1706 compression, 8);
1707BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item,
1708 encryption, 8);
1709BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item,
1710 other_encoding, 16);
1711
1712/* this returns the number of file bytes represented by the inline item.
1713 * If an item is compressed, this is the uncompressed size
1714 */
1715static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb,
1716 struct btrfs_file_extent_item *e)
1717{
1718 return btrfs_file_extent_ram_bytes(eb, e);
1719}
1720
1721/*
1722 * this returns the number of bytes used by the item on disk, minus the
1723 * size of any extent headers. If a file is compressed on disk, this is
1724 * the compressed size
1725 */
1726static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb,
1727 struct btrfs_item *e)
1728{
1729 unsigned long offset;
1730 offset = offsetof(struct btrfs_file_extent_item, disk_bytenr);
1731 return btrfs_item_size(eb, e) - offset;
1732}
9f5fae2f 1733
e20d96d6
CM
1734static inline struct btrfs_root *btrfs_sb(struct super_block *sb)
1735{
1736 return sb->s_fs_info;
1737}
1738
58176a96
JB
1739static inline int btrfs_set_root_name(struct btrfs_root *root,
1740 const char *name, int len)
1741{
1742 /* if we already have a name just free it */
d397712b 1743 kfree(root->name);
58176a96
JB
1744
1745 root->name = kmalloc(len+1, GFP_KERNEL);
1746 if (!root->name)
1747 return -ENOMEM;
1748
1749 memcpy(root->name, name, len);
d397712b 1750 root->name[len] = '\0';
58176a96
JB
1751
1752 return 0;
1753}
1754
d397712b
CM
1755static inline u32 btrfs_level_size(struct btrfs_root *root, int level)
1756{
db94535d
CM
1757 if (level == 0)
1758 return root->leafsize;
1759 return root->nodesize;
1760}
1761
4beb1b8b
CM
1762/* helper function to cast into the data area of the leaf. */
1763#define btrfs_item_ptr(leaf, slot, type) \
123abc88 1764 ((type *)(btrfs_leaf_data(leaf) + \
5f39d397
CM
1765 btrfs_item_offset_nr(leaf, slot)))
1766
1767#define btrfs_item_ptr_offset(leaf, slot) \
1768 ((unsigned long)(btrfs_leaf_data(leaf) + \
1769 btrfs_item_offset_nr(leaf, slot)))
4beb1b8b 1770
2b1f55b0
CM
1771static inline struct dentry *fdentry(struct file *file)
1772{
6da6abae 1773 return file->f_path.dentry;
6da6abae
CM
1774}
1775
b18c6685 1776/* extent-tree.c */
fa9c0d79 1777void btrfs_put_block_group(struct btrfs_block_group_cache *cache);
56bec294
CM
1778int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
1779 struct btrfs_root *root, unsigned long count);
31840ae1 1780int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len);
e02119d5
CM
1781int btrfs_update_pinned_extents(struct btrfs_root *root,
1782 u64 bytenr, u64 num, int pin);
1783int btrfs_drop_leaf_ref(struct btrfs_trans_handle *trans,
1784 struct btrfs_root *root, struct extent_buffer *leaf);
80ff3856 1785int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans,
17d217fe 1786 struct btrfs_root *root, u64 objectid, u64 bytenr);
d1310b2e 1787int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy);
d397712b
CM
1788struct btrfs_block_group_cache *btrfs_lookup_block_group(
1789 struct btrfs_fs_info *info,
1790 u64 bytenr);
d2fb3437
YZ
1791u64 btrfs_find_block_group(struct btrfs_root *root,
1792 u64 search_start, u64 search_hint, int owner);
5f39d397 1793struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
7bb86316 1794 struct btrfs_root *root,
31840ae1 1795 u32 blocksize, u64 parent,
7bb86316
CM
1796 u64 root_objectid,
1797 u64 ref_generation,
7bb86316
CM
1798 int level,
1799 u64 hint,
1800 u64 empty_size);
65b51a00
CM
1801struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans,
1802 struct btrfs_root *root,
4008c04a
CM
1803 u64 bytenr, u32 blocksize,
1804 int level);
4d775673 1805int btrfs_alloc_extent(struct btrfs_trans_handle *trans,
7bb86316 1806 struct btrfs_root *root,
31840ae1 1807 u64 num_bytes, u64 parent, u64 min_bytes,
98d20f67 1808 u64 root_objectid, u64 ref_generation,
3bb1a1bc 1809 u64 owner, u64 empty_size, u64 hint_byte,
ec44a35c 1810 u64 search_end, struct btrfs_key *ins, u64 data);
e6dcd2dc 1811int btrfs_alloc_reserved_extent(struct btrfs_trans_handle *trans,
31840ae1 1812 struct btrfs_root *root, u64 parent,
e6dcd2dc 1813 u64 root_objectid, u64 ref_generation,
3bb1a1bc 1814 u64 owner, struct btrfs_key *ins);
e02119d5 1815int btrfs_alloc_logged_extent(struct btrfs_trans_handle *trans,
31840ae1 1816 struct btrfs_root *root, u64 parent,
e02119d5 1817 u64 root_objectid, u64 ref_generation,
3bb1a1bc 1818 u64 owner, struct btrfs_key *ins);
e6dcd2dc
CM
1819int btrfs_reserve_extent(struct btrfs_trans_handle *trans,
1820 struct btrfs_root *root,
1821 u64 num_bytes, u64 min_alloc_size,
1822 u64 empty_size, u64 hint_byte,
1823 u64 search_end, struct btrfs_key *ins,
1824 u64 data);
e089f05c 1825int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
31840ae1
ZY
1826 struct extent_buffer *orig_buf, struct extent_buffer *buf,
1827 u32 *nr_extents);
1828int btrfs_cache_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
1829 struct extent_buffer *buf, u32 nr_extents);
1830int btrfs_update_ref(struct btrfs_trans_handle *trans,
1831 struct btrfs_root *root, struct extent_buffer *orig_buf,
1832 struct extent_buffer *buf, int start_slot, int nr);
1833int btrfs_free_extent(struct btrfs_trans_handle *trans,
1834 struct btrfs_root *root,
1835 u64 bytenr, u64 num_bytes, u64 parent,
7bb86316 1836 u64 root_objectid, u64 ref_generation,
3bb1a1bc 1837 u64 owner_objectid, int pin);
65b51a00 1838int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len);
ccd467d6
CM
1839int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans,
1840 struct btrfs_root *root,
d1310b2e 1841 struct extent_io_tree *unpin);
b18c6685 1842int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
31840ae1
ZY
1843 struct btrfs_root *root,
1844 u64 bytenr, u64 num_bytes, u64 parent,
1845 u64 root_objectid, u64 ref_generation,
3bb1a1bc 1846 u64 owner_objectid);
31840ae1 1847int btrfs_update_extent_ref(struct btrfs_trans_handle *trans,
56bec294 1848 struct btrfs_root *root, u64 bytenr, u64 num_bytes,
31840ae1
ZY
1849 u64 orig_parent, u64 parent,
1850 u64 root_objectid, u64 ref_generation,
3bb1a1bc 1851 u64 owner_objectid);
9078a3e1
CM
1852int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans,
1853 struct btrfs_root *root);
d2fb3437 1854int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr);
9078a3e1
CM
1855int btrfs_free_block_groups(struct btrfs_fs_info *info);
1856int btrfs_read_block_groups(struct btrfs_root *root);
0b86a832
CM
1857int btrfs_make_block_group(struct btrfs_trans_handle *trans,
1858 struct btrfs_root *root, u64 bytes_used,
e17cade2 1859 u64 type, u64 chunk_objectid, u64 chunk_offset,
0b86a832 1860 u64 size);
1a40e23b
ZY
1861int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
1862 struct btrfs_root *root, u64 group_start);
1863int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start);
f82d02d9
YZ
1864int btrfs_free_reloc_root(struct btrfs_trans_handle *trans,
1865 struct btrfs_root *root);
1a40e23b 1866int btrfs_drop_dead_reloc_roots(struct btrfs_root *root);
1a40e23b
ZY
1867int btrfs_reloc_tree_cache_ref(struct btrfs_trans_handle *trans,
1868 struct btrfs_root *root,
1869 struct extent_buffer *buf, u64 orig_start);
1870int btrfs_add_dead_reloc_root(struct btrfs_root *root);
1871int btrfs_cleanup_reloc_trees(struct btrfs_root *root);
17d217fe 1872int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len);
2b82032c 1873u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags);
6a63209f 1874void btrfs_set_inode_space_info(struct btrfs_root *root, struct inode *ionde);
4184ea7f
CM
1875void btrfs_clear_space_info_full(struct btrfs_fs_info *info);
1876
6a63209f
JB
1877int btrfs_check_metadata_free_space(struct btrfs_root *root);
1878int btrfs_check_data_free_space(struct btrfs_root *root, struct inode *inode,
1879 u64 bytes);
1880void btrfs_free_reserved_data_space(struct btrfs_root *root,
1881 struct inode *inode, u64 bytes);
1882void btrfs_delalloc_reserve_space(struct btrfs_root *root, struct inode *inode,
1883 u64 bytes);
1884void btrfs_delalloc_free_space(struct btrfs_root *root, struct inode *inode,
1885 u64 bytes);
dee26a9f 1886/* ctree.c */
0b86a832
CM
1887int btrfs_previous_item(struct btrfs_root *root,
1888 struct btrfs_path *path, u64 min_objectid,
1889 int type);
1a40e23b
ZY
1890int btrfs_merge_path(struct btrfs_trans_handle *trans,
1891 struct btrfs_root *root,
1892 struct btrfs_key *node_keys,
1893 u64 *nodes, int lowest_level);
31840ae1
ZY
1894int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans,
1895 struct btrfs_root *root, struct btrfs_path *path,
1896 struct btrfs_key *new_key);
925baedd
CM
1897struct extent_buffer *btrfs_root_node(struct btrfs_root *root);
1898struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root);
e7a84565 1899int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path,
3f157a2f
CM
1900 struct btrfs_key *key, int lowest_level,
1901 int cache_only, u64 min_trans);
1902int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key,
e02119d5 1903 struct btrfs_key *max_key,
3f157a2f
CM
1904 struct btrfs_path *path, int cache_only,
1905 u64 min_trans);
5f39d397
CM
1906int btrfs_cow_block(struct btrfs_trans_handle *trans,
1907 struct btrfs_root *root, struct extent_buffer *buf,
1908 struct extent_buffer *parent, int parent_slot,
9fa8cfe7 1909 struct extent_buffer **cow_ret);
be20aa9d
CM
1910int btrfs_copy_root(struct btrfs_trans_handle *trans,
1911 struct btrfs_root *root,
1912 struct extent_buffer *buf,
1913 struct extent_buffer **cow_ret, u64 new_root_objectid);
6567e837
CM
1914int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root
1915 *root, struct btrfs_path *path, u32 data_size);
b18c6685
CM
1916int btrfs_truncate_item(struct btrfs_trans_handle *trans,
1917 struct btrfs_root *root,
1918 struct btrfs_path *path,
179e29e4 1919 u32 new_size, int from_end);
459931ec
CM
1920int btrfs_split_item(struct btrfs_trans_handle *trans,
1921 struct btrfs_root *root,
1922 struct btrfs_path *path,
1923 struct btrfs_key *new_key,
1924 unsigned long split_offset);
e089f05c
CM
1925int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root
1926 *root, struct btrfs_key *key, struct btrfs_path *p, int
1927 ins_len, int cow);
6702ed49 1928int btrfs_realloc_node(struct btrfs_trans_handle *trans,
5f39d397 1929 struct btrfs_root *root, struct extent_buffer *parent,
a6b6e75e
CM
1930 int start_slot, int cache_only, u64 *last_ret,
1931 struct btrfs_key *progress);
234b63a0 1932void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p);
2c90e5d6
CM
1933struct btrfs_path *btrfs_alloc_path(void);
1934void btrfs_free_path(struct btrfs_path *p);
b4ce94de 1935void btrfs_set_path_blocking(struct btrfs_path *p);
b4ce94de
CM
1936void btrfs_unlock_up_safe(struct btrfs_path *p, int level);
1937
85e21bac
CM
1938int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
1939 struct btrfs_path *path, int slot, int nr);
323ac95b
CM
1940int btrfs_del_leaf(struct btrfs_trans_handle *trans,
1941 struct btrfs_root *root,
1942 struct btrfs_path *path, u64 bytenr);
85e21bac
CM
1943static inline int btrfs_del_item(struct btrfs_trans_handle *trans,
1944 struct btrfs_root *root,
1945 struct btrfs_path *path)
1946{
1947 return btrfs_del_items(trans, root, path, path->slots[0], 1);
1948}
1949
e089f05c
CM
1950int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root
1951 *root, struct btrfs_key *key, void *data, u32 data_size);
f3465ca4
JB
1952int btrfs_insert_some_items(struct btrfs_trans_handle *trans,
1953 struct btrfs_root *root,
1954 struct btrfs_path *path,
1955 struct btrfs_key *cpu_key, u32 *data_size,
1956 int nr);
9c58309d
CM
1957int btrfs_insert_empty_items(struct btrfs_trans_handle *trans,
1958 struct btrfs_root *root,
1959 struct btrfs_path *path,
1960 struct btrfs_key *cpu_key, u32 *data_size, int nr);
1961
1962static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans,
1963 struct btrfs_root *root,
1964 struct btrfs_path *path,
1965 struct btrfs_key *key,
1966 u32 data_size)
1967{
1968 return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1);
1969}
1970
234b63a0 1971int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path);
7bb86316 1972int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path);
5f39d397 1973int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf);
e089f05c 1974int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root
9f3a7427 1975 *root);
f82d02d9
YZ
1976int btrfs_drop_subtree(struct btrfs_trans_handle *trans,
1977 struct btrfs_root *root,
1978 struct extent_buffer *node,
1979 struct extent_buffer *parent);
dee26a9f 1980/* root-item.c */
ea9e8b11
CM
1981int btrfs_find_root_ref(struct btrfs_root *tree_root,
1982 struct btrfs_path *path,
1983 u64 root_id, u64 ref_id);
0660b5af
CM
1984int btrfs_add_root_ref(struct btrfs_trans_handle *trans,
1985 struct btrfs_root *tree_root,
1986 u64 root_id, u8 type, u64 ref_id,
1987 u64 dirid, u64 sequence,
1988 const char *name, int name_len);
e089f05c
CM
1989int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,
1990 struct btrfs_key *key);
1991int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root
1992 *root, struct btrfs_key *key, struct btrfs_root_item
1993 *item);
1994int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root
1995 *root, struct btrfs_key *key, struct btrfs_root_item
1996 *item);
1997int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct
1998 btrfs_root_item *item, struct btrfs_key *key);
bf4ef679
CM
1999int btrfs_search_root(struct btrfs_root *root, u64 search_start,
2000 u64 *found_objectid);
5ce14bbc
CM
2001int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid,
2002 struct btrfs_root *latest_root);
dee26a9f 2003/* dir-item.c */
d397712b
CM
2004int btrfs_insert_dir_item(struct btrfs_trans_handle *trans,
2005 struct btrfs_root *root, const char *name,
2006 int name_len, u64 dir,
aec7477b 2007 struct btrfs_key *location, u8 type, u64 index);
7e38180e
CM
2008struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans,
2009 struct btrfs_root *root,
2010 struct btrfs_path *path, u64 dir,
2011 const char *name, int name_len,
2012 int mod);
2013struct btrfs_dir_item *
2014btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans,
2015 struct btrfs_root *root,
2016 struct btrfs_path *path, u64 dir,
2017 u64 objectid, const char *name, int name_len,
2018 int mod);
2019struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
2020 struct btrfs_path *path,
7f5c1516 2021 const char *name, int name_len);
7e38180e
CM
2022int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans,
2023 struct btrfs_root *root,
2024 struct btrfs_path *path,
2025 struct btrfs_dir_item *di);
5103e947
JB
2026int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans,
2027 struct btrfs_root *root, const char *name,
2028 u16 name_len, const void *data, u16 data_len,
2029 u64 dir);
2030struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
2031 struct btrfs_root *root,
2032 struct btrfs_path *path, u64 dir,
2033 const char *name, u16 name_len,
2034 int mod);
7b128766
JB
2035
2036/* orphan.c */
2037int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans,
2038 struct btrfs_root *root, u64 offset);
2039int btrfs_del_orphan_item(struct btrfs_trans_handle *trans,
2040 struct btrfs_root *root, u64 offset);
2041
dee26a9f 2042/* inode-map.c */
9f5fae2f
CM
2043int btrfs_find_free_objectid(struct btrfs_trans_handle *trans,
2044 struct btrfs_root *fs_root,
2045 u64 dirid, u64 *objectid);
5be6f7f1
CM
2046int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid);
2047
dee26a9f 2048/* inode-item.c */
3954401f
CM
2049int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
2050 struct btrfs_root *root,
2051 const char *name, int name_len,
aec7477b 2052 u64 inode_objectid, u64 ref_objectid, u64 index);
3954401f
CM
2053int btrfs_del_inode_ref(struct btrfs_trans_handle *trans,
2054 struct btrfs_root *root,
2055 const char *name, int name_len,
aec7477b 2056 u64 inode_objectid, u64 ref_objectid, u64 *index);
5f39d397
CM
2057int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans,
2058 struct btrfs_root *root,
2059 struct btrfs_path *path, u64 objectid);
293ffd5f 2060int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root
d6e4a428
CM
2061 *root, struct btrfs_path *path,
2062 struct btrfs_key *location, int mod);
dee26a9f
CM
2063
2064/* file-item.c */
459931ec
CM
2065int btrfs_del_csums(struct btrfs_trans_handle *trans,
2066 struct btrfs_root *root, u64 bytenr, u64 len);
61b49440 2067int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode,
d20f7043 2068 struct bio *bio, u32 *dst);
b18c6685 2069int btrfs_insert_file_extent(struct btrfs_trans_handle *trans,
c8b97818
CM
2070 struct btrfs_root *root,
2071 u64 objectid, u64 pos,
2072 u64 disk_offset, u64 disk_num_bytes,
2073 u64 num_bytes, u64 offset, u64 ram_bytes,
2074 u8 compression, u8 encryption, u16 other_encoding);
dee26a9f
CM
2075int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans,
2076 struct btrfs_root *root,
2077 struct btrfs_path *path, u64 objectid,
db94535d 2078 u64 bytenr, int mod);
065631f6 2079int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
d20f7043 2080 struct btrfs_root *root,
e6dcd2dc 2081 struct btrfs_ordered_sum *sums);
3edf7d33 2082int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
d20f7043 2083 struct bio *bio, u64 file_start, int contig);
c8b97818
CM
2084int btrfs_csum_file_bytes(struct btrfs_root *root, struct inode *inode,
2085 u64 start, unsigned long len);
b18c6685
CM
2086struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans,
2087 struct btrfs_root *root,
2088 struct btrfs_path *path,
d20f7043 2089 u64 bytenr, int cow);
1de037a4
CM
2090int btrfs_csum_truncate(struct btrfs_trans_handle *trans,
2091 struct btrfs_root *root, struct btrfs_path *path,
2092 u64 isize);
17d217fe
YZ
2093int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start,
2094 u64 end, struct list_head *list);
39279cc3 2095/* inode.c */
4881ee5a
CM
2096
2097/* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */
5036f538 2098#if defined(ClearPageFsMisc) && !defined(ClearPageChecked)
4881ee5a
CM
2099#define ClearPageChecked ClearPageFsMisc
2100#define SetPageChecked SetPageFsMisc
2101#define PageChecked PageFsMisc
2102#endif
2103
3de4586c
CM
2104struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry);
2105int btrfs_set_inode_index(struct inode *dir, u64 *index);
e02119d5
CM
2106int btrfs_unlink_inode(struct btrfs_trans_handle *trans,
2107 struct btrfs_root *root,
2108 struct inode *dir, struct inode *inode,
2109 const char *name, int name_len);
2110int btrfs_add_link(struct btrfs_trans_handle *trans,
2111 struct inode *parent_inode, struct inode *inode,
2112 const char *name, int name_len, int add_backref, u64 index);
2113int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
2114 struct btrfs_root *root,
2115 struct inode *inode, u64 new_size,
2116 u32 min_type);
2117
ea8c2819
CM
2118int btrfs_start_delalloc_inodes(struct btrfs_root *root);
2119int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end);
f421950f
CM
2120int btrfs_writepages(struct address_space *mapping,
2121 struct writeback_control *wbc);
d2fb3437
YZ
2122int btrfs_create_subvol_root(struct btrfs_trans_handle *trans,
2123 struct btrfs_root *new_root, struct dentry *dentry,
2124 u64 new_dirid, u64 alloc_hint);
239b14b3 2125int btrfs_merge_bio_hook(struct page *page, unsigned long offset,
c8b97818 2126 size_t size, struct bio *bio, unsigned long bio_flags);
239b14b3 2127
edbd8d4e
CM
2128unsigned long btrfs_force_ra(struct address_space *mapping,
2129 struct file_ra_state *ra, struct file *file,
2130 pgoff_t offset, pgoff_t last_index);
9ebefb18
CM
2131int btrfs_page_mkwrite(struct vm_area_struct *vma, struct page *page);
2132int btrfs_readpage(struct file *file, struct page *page);
39279cc3 2133void btrfs_delete_inode(struct inode *inode);
2da98f00 2134void btrfs_put_inode(struct inode *inode);
39279cc3
CM
2135void btrfs_read_locked_inode(struct inode *inode);
2136int btrfs_write_inode(struct inode *inode, int wait);
2137void btrfs_dirty_inode(struct inode *inode);
2138struct inode *btrfs_alloc_inode(struct super_block *sb);
2139void btrfs_destroy_inode(struct inode *inode);
2140int btrfs_init_cachep(void);
2141void btrfs_destroy_cachep(void);
6bf13c0c 2142long btrfs_ioctl_trans_end(struct file *file);
5b21f2ed
ZY
2143struct inode *btrfs_ilookup(struct super_block *s, u64 objectid,
2144 struct btrfs_root *root, int wait);
39279cc3
CM
2145struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid,
2146 struct btrfs_root *root);
1a54ef8c
BR
2147struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
2148 struct btrfs_root *root, int *is_new);
39279cc3
CM
2149int btrfs_commit_write(struct file *file, struct page *page,
2150 unsigned from, unsigned to);
a52d9a80
CM
2151struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page,
2152 size_t page_offset, u64 start, u64 end,
2153 int create);
2154int btrfs_update_inode(struct btrfs_trans_handle *trans,
2155 struct btrfs_root *root,
2156 struct inode *inode);
5b21f2ed
ZY
2157int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode);
2158int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode);
2159void btrfs_orphan_cleanup(struct btrfs_root *root);
9036c102 2160int btrfs_cont_expand(struct inode *inode, loff_t size);
f46b5a66
CH
2161
2162/* ioctl.c */
2163long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
2164
39279cc3 2165/* file.c */
e02119d5 2166int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync);
5b21f2ed
ZY
2167int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end,
2168 int skip_pinned);
5f56406a 2169int btrfs_check_file(struct btrfs_root *root, struct inode *inode);
39279cc3
CM
2170extern struct file_operations btrfs_file_operations;
2171int btrfs_drop_extents(struct btrfs_trans_handle *trans,
2172 struct btrfs_root *root, struct inode *inode,
00f5c795 2173 u64 start, u64 end, u64 inline_limit, u64 *hint_block);
d899e052
YZ
2174int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
2175 struct btrfs_root *root,
2176 struct inode *inode, u64 start, u64 end);
6bf13c0c
SW
2177int btrfs_release_file(struct inode *inode, struct file *file);
2178
6702ed49
CM
2179/* tree-defrag.c */
2180int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
2181 struct btrfs_root *root, int cache_only);
58176a96
JB
2182
2183/* sysfs.c */
2184int btrfs_init_sysfs(void);
2185void btrfs_exit_sysfs(void);
2186int btrfs_sysfs_add_super(struct btrfs_fs_info *fs);
2187int btrfs_sysfs_add_root(struct btrfs_root *root);
2188void btrfs_sysfs_del_root(struct btrfs_root *root);
2189void btrfs_sysfs_del_super(struct btrfs_fs_info *root);
2190
5103e947
JB
2191/* xattr.c */
2192ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
6099afe8 2193
edbd8d4e
CM
2194/* super.c */
2195u64 btrfs_parse_size(char *str);
edf24abe 2196int btrfs_parse_options(struct btrfs_root *root, char *options);
6bf13c0c 2197int btrfs_sync_fs(struct super_block *sb, int wait);
33268eaf
JB
2198
2199/* acl.c */
2200int btrfs_check_acl(struct inode *inode, int mask);
2201int btrfs_init_acl(struct inode *inode, struct inode *dir);
2202int btrfs_acl_chmod(struct inode *inode);
0f9dd46c 2203
eb60ceac 2204#endif