1 /* SPDX-License-Identifier: GPL-2.0 */
3 #ifndef BTRFS_ACCESSORS_H
4 #define BTRFS_ACCESSORS_H
6 #include <asm/unaligned.h>
7 #include <linux/stddef.h>
8 #include <linux/types.h>
9 #include <linux/align.h>
10 #include <linux/build_bug.h>
11 #include <linux/compiler.h>
12 #include <linux/string.h>
14 #include <uapi/linux/btrfs_tree.h>
18 struct btrfs_map_token {
19 struct extent_buffer *eb;
24 void btrfs_init_map_token(struct btrfs_map_token *token, struct extent_buffer *eb);
27 * Some macros to generate set/get functions for the struct fields. This
28 * assumes there is a lefoo_to_cpu for every type, so lets make a simple one
31 #define le8_to_cpu(v) (v)
32 #define cpu_to_le8(v) (v)
35 static inline u8 get_unaligned_le8(const void *p)
40 static inline void put_unaligned_le8(u8 val, void *p)
45 #define read_eb_member(eb, ptr, type, member, result) (\
46 read_extent_buffer(eb, (char *)(result), \
47 ((unsigned long)(ptr)) + \
48 offsetof(type, member), \
49 sizeof_field(type, member)))
51 #define write_eb_member(eb, ptr, type, member, result) (\
52 write_extent_buffer(eb, (char *)(result), \
53 ((unsigned long)(ptr)) + \
54 offsetof(type, member), \
55 sizeof_field(type, member)))
57 #define DECLARE_BTRFS_SETGET_BITS(bits) \
58 u##bits btrfs_get_token_##bits(struct btrfs_map_token *token, \
59 const void *ptr, unsigned long off); \
60 void btrfs_set_token_##bits(struct btrfs_map_token *token, \
61 const void *ptr, unsigned long off, \
63 u##bits btrfs_get_##bits(const struct extent_buffer *eb, \
64 const void *ptr, unsigned long off); \
65 void btrfs_set_##bits(const struct extent_buffer *eb, void *ptr, \
66 unsigned long off, u##bits val);
68 DECLARE_BTRFS_SETGET_BITS(8)
69 DECLARE_BTRFS_SETGET_BITS(16)
70 DECLARE_BTRFS_SETGET_BITS(32)
71 DECLARE_BTRFS_SETGET_BITS(64)
73 #define BTRFS_SETGET_FUNCS(name, type, member, bits) \
74 static inline u##bits btrfs_##name(const struct extent_buffer *eb, \
77 static_assert(sizeof(u##bits) == sizeof_field(type, member)); \
78 return btrfs_get_##bits(eb, s, offsetof(type, member)); \
80 static inline void btrfs_set_##name(const struct extent_buffer *eb, type *s, \
83 static_assert(sizeof(u##bits) == sizeof_field(type, member)); \
84 btrfs_set_##bits(eb, s, offsetof(type, member), val); \
86 static inline u##bits btrfs_token_##name(struct btrfs_map_token *token, \
89 static_assert(sizeof(u##bits) == sizeof_field(type, member)); \
90 return btrfs_get_token_##bits(token, s, offsetof(type, member));\
92 static inline void btrfs_set_token_##name(struct btrfs_map_token *token,\
93 type *s, u##bits val) \
95 static_assert(sizeof(u##bits) == sizeof_field(type, member)); \
96 btrfs_set_token_##bits(token, s, offsetof(type, member), val); \
99 #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \
100 static inline u##bits btrfs_##name(const struct extent_buffer *eb) \
102 const type *p = folio_address(eb->folios[0]) + \
103 offset_in_page(eb->start); \
104 return get_unaligned_le##bits(&p->member); \
106 static inline void btrfs_set_##name(const struct extent_buffer *eb, \
109 type *p = folio_address(eb->folios[0]) + offset_in_page(eb->start); \
110 put_unaligned_le##bits(val, &p->member); \
113 #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
114 static inline u##bits btrfs_##name(const type *s) \
116 return get_unaligned_le##bits(&s->member); \
118 static inline void btrfs_set_##name(type *s, u##bits val) \
120 put_unaligned_le##bits(val, &s->member); \
123 static inline u64 btrfs_device_total_bytes(const struct extent_buffer *eb,
124 struct btrfs_dev_item *s)
126 static_assert(sizeof(u64) == sizeof_field(struct btrfs_dev_item, total_bytes));
127 return btrfs_get_64(eb, s, offsetof(struct btrfs_dev_item, total_bytes));
129 static inline void btrfs_set_device_total_bytes(const struct extent_buffer *eb,
130 struct btrfs_dev_item *s,
133 static_assert(sizeof(u64) == sizeof_field(struct btrfs_dev_item, total_bytes));
134 WARN_ON(!IS_ALIGNED(val, eb->fs_info->sectorsize));
135 btrfs_set_64(eb, s, offsetof(struct btrfs_dev_item, total_bytes), val);
138 BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64);
139 BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64);
140 BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32);
141 BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32);
142 BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, start_offset, 64);
143 BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32);
144 BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64);
145 BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32);
146 BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8);
147 BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8);
148 BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64);
150 BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64);
151 BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item,
153 BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item,
155 BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item,
157 BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item,
159 BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item,
161 BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64);
162 BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, dev_group, 32);
163 BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item,
165 BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item,
167 BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item,
170 static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d)
172 return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid);
175 static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d)
177 return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid);
180 BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64);
181 BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64);
182 BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64);
183 BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32);
184 BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32);
185 BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32);
186 BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64);
187 BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16);
188 BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16);
189 BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64);
190 BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64);
192 static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s)
194 return (char *)s + offsetof(struct btrfs_stripe, dev_uuid);
197 BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64);
198 BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64);
199 BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk,
201 BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, io_align, 32);
202 BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, io_width, 32);
203 BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk,
205 BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64);
206 BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk,
208 BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk,
210 BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64);
211 BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64);
213 static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, int nr)
215 unsigned long offset = (unsigned long)c;
217 offset += offsetof(struct btrfs_chunk, stripe);
218 offset += nr * sizeof(struct btrfs_stripe);
219 return (struct btrfs_stripe *)offset;
222 static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr)
224 return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr));
227 static inline u64 btrfs_stripe_offset_nr(const struct extent_buffer *eb,
228 struct btrfs_chunk *c, int nr)
230 return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr));
233 static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb,
234 struct btrfs_chunk *c, int nr,
237 btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val);
240 static inline u64 btrfs_stripe_devid_nr(const struct extent_buffer *eb,
241 struct btrfs_chunk *c, int nr)
243 return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr));
246 static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb,
247 struct btrfs_chunk *c, int nr,
250 btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val);
253 /* struct btrfs_block_group_item */
254 BTRFS_SETGET_STACK_FUNCS(stack_block_group_used, struct btrfs_block_group_item,
256 BTRFS_SETGET_FUNCS(block_group_used, struct btrfs_block_group_item, used, 64);
257 BTRFS_SETGET_STACK_FUNCS(stack_block_group_chunk_objectid,
258 struct btrfs_block_group_item, chunk_objectid, 64);
260 BTRFS_SETGET_FUNCS(block_group_chunk_objectid,
261 struct btrfs_block_group_item, chunk_objectid, 64);
262 BTRFS_SETGET_FUNCS(block_group_flags, struct btrfs_block_group_item, flags, 64);
263 BTRFS_SETGET_STACK_FUNCS(stack_block_group_flags,
264 struct btrfs_block_group_item, flags, 64);
266 /* struct btrfs_free_space_info */
267 BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info,
269 BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32);
271 /* struct btrfs_inode_ref */
272 BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16);
273 BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64);
274 BTRFS_SETGET_STACK_FUNCS(stack_inode_ref_name_len, struct btrfs_inode_ref, name_len, 16);
275 BTRFS_SETGET_STACK_FUNCS(stack_inode_ref_index, struct btrfs_inode_ref, index, 64);
277 /* struct btrfs_inode_extref */
278 BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref,
279 parent_objectid, 64);
280 BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref,
282 BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64);
284 /* struct btrfs_inode_item */
285 BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64);
286 BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64);
287 BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64);
288 BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64);
289 BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64);
290 BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64);
291 BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32);
292 BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32);
293 BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32);
294 BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32);
295 BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64);
296 BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64);
297 BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item,
299 BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item,
301 BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item,
303 BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64);
304 BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, nbytes, 64);
305 BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item,
307 BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32);
308 BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32);
309 BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32);
310 BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32);
311 BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64);
312 BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64);
313 BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64);
314 BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32);
315 BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64);
316 BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32);
318 BTRFS_SETGET_FUNCS(stripe_extent_encoding, struct btrfs_stripe_extent, encoding, 8);
319 BTRFS_SETGET_FUNCS(raid_stride_devid, struct btrfs_raid_stride, devid, 64);
320 BTRFS_SETGET_FUNCS(raid_stride_physical, struct btrfs_raid_stride, physical, 64);
321 BTRFS_SETGET_STACK_FUNCS(stack_stripe_extent_encoding,
322 struct btrfs_stripe_extent, encoding, 8);
323 BTRFS_SETGET_STACK_FUNCS(stack_raid_stride_devid, struct btrfs_raid_stride, devid, 64);
324 BTRFS_SETGET_STACK_FUNCS(stack_raid_stride_physical, struct btrfs_raid_stride, physical, 64);
326 /* struct btrfs_dev_extent */
327 BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, chunk_tree, 64);
328 BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent,
330 BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent,
332 BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64);
333 BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_chunk_tree, struct btrfs_dev_extent,
335 BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_chunk_objectid, struct btrfs_dev_extent,
337 BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_chunk_offset, struct btrfs_dev_extent,
339 BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_length, struct btrfs_dev_extent, length, 64);
341 BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64);
342 BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, generation, 64);
343 BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64);
345 BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8);
347 static inline void btrfs_tree_block_key(const struct extent_buffer *eb,
348 struct btrfs_tree_block_info *item,
349 struct btrfs_disk_key *key)
351 read_eb_member(eb, item, struct btrfs_tree_block_info, key, key);
354 static inline void btrfs_set_tree_block_key(const struct extent_buffer *eb,
355 struct btrfs_tree_block_info *item,
356 struct btrfs_disk_key *key)
358 write_eb_member(eb, item, struct btrfs_tree_block_info, key, key);
361 BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, root, 64);
362 BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref,
364 BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref,
366 BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, count, 32);
368 BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, count, 32);
370 BTRFS_SETGET_FUNCS(extent_owner_ref_root_id, struct btrfs_extent_owner_ref,
373 BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref,
375 BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref,
378 static inline u32 btrfs_extent_inline_ref_size(int type)
380 if (type == BTRFS_TREE_BLOCK_REF_KEY ||
381 type == BTRFS_SHARED_BLOCK_REF_KEY)
382 return sizeof(struct btrfs_extent_inline_ref);
383 if (type == BTRFS_SHARED_DATA_REF_KEY)
384 return sizeof(struct btrfs_shared_data_ref) +
385 sizeof(struct btrfs_extent_inline_ref);
386 if (type == BTRFS_EXTENT_DATA_REF_KEY)
387 return sizeof(struct btrfs_extent_data_ref) +
388 offsetof(struct btrfs_extent_inline_ref, offset);
389 if (type == BTRFS_EXTENT_OWNER_REF_KEY)
390 return sizeof(struct btrfs_extent_inline_ref);
394 /* struct btrfs_node */
395 BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64);
396 BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64);
397 BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, blockptr, 64);
398 BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr,
401 static inline u64 btrfs_node_blockptr(const struct extent_buffer *eb, int nr)
405 ptr = offsetof(struct btrfs_node, ptrs) +
406 sizeof(struct btrfs_key_ptr) * nr;
407 return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr);
410 static inline void btrfs_set_node_blockptr(const struct extent_buffer *eb,
415 ptr = offsetof(struct btrfs_node, ptrs) +
416 sizeof(struct btrfs_key_ptr) * nr;
417 btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val);
420 static inline u64 btrfs_node_ptr_generation(const struct extent_buffer *eb, int nr)
424 ptr = offsetof(struct btrfs_node, ptrs) +
425 sizeof(struct btrfs_key_ptr) * nr;
426 return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr);
429 static inline void btrfs_set_node_ptr_generation(const struct extent_buffer *eb,
434 ptr = offsetof(struct btrfs_node, ptrs) +
435 sizeof(struct btrfs_key_ptr) * nr;
436 btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val);
439 static inline unsigned long btrfs_node_key_ptr_offset(const struct extent_buffer *eb, int nr)
441 return offsetof(struct btrfs_node, ptrs) +
442 sizeof(struct btrfs_key_ptr) * nr;
445 void btrfs_node_key(const struct extent_buffer *eb,
446 struct btrfs_disk_key *disk_key, int nr);
448 static inline void btrfs_set_node_key(const struct extent_buffer *eb,
449 struct btrfs_disk_key *disk_key, int nr)
453 ptr = btrfs_node_key_ptr_offset(eb, nr);
454 write_eb_member(eb, (struct btrfs_key_ptr *)ptr,
455 struct btrfs_key_ptr, key, disk_key);
458 /* struct btrfs_item */
459 BTRFS_SETGET_FUNCS(raw_item_offset, struct btrfs_item, offset, 32);
460 BTRFS_SETGET_FUNCS(raw_item_size, struct btrfs_item, size, 32);
461 BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32);
462 BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32);
464 static inline unsigned long btrfs_item_nr_offset(const struct extent_buffer *eb, int nr)
466 return offsetof(struct btrfs_leaf, items) +
467 sizeof(struct btrfs_item) * nr;
470 static inline struct btrfs_item *btrfs_item_nr(const struct extent_buffer *eb, int nr)
472 return (struct btrfs_item *)btrfs_item_nr_offset(eb, nr);
475 #define BTRFS_ITEM_SETGET_FUNCS(member) \
476 static inline u32 btrfs_item_##member(const struct extent_buffer *eb, int slot) \
478 return btrfs_raw_item_##member(eb, btrfs_item_nr(eb, slot)); \
480 static inline void btrfs_set_item_##member(const struct extent_buffer *eb, \
483 btrfs_set_raw_item_##member(eb, btrfs_item_nr(eb, slot), val); \
485 static inline u32 btrfs_token_item_##member(struct btrfs_map_token *token, \
488 struct btrfs_item *item = btrfs_item_nr(token->eb, slot); \
489 return btrfs_token_raw_item_##member(token, item); \
491 static inline void btrfs_set_token_item_##member(struct btrfs_map_token *token, \
494 struct btrfs_item *item = btrfs_item_nr(token->eb, slot); \
495 btrfs_set_token_raw_item_##member(token, item, val); \
498 BTRFS_ITEM_SETGET_FUNCS(offset)
499 BTRFS_ITEM_SETGET_FUNCS(size);
501 static inline u32 btrfs_item_data_end(const struct extent_buffer *eb, int nr)
503 return btrfs_item_offset(eb, nr) + btrfs_item_size(eb, nr);
506 static inline void btrfs_item_key(const struct extent_buffer *eb,
507 struct btrfs_disk_key *disk_key, int nr)
509 struct btrfs_item *item = btrfs_item_nr(eb, nr);
511 read_eb_member(eb, item, struct btrfs_item, key, disk_key);
514 static inline void btrfs_set_item_key(struct extent_buffer *eb,
515 struct btrfs_disk_key *disk_key, int nr)
517 struct btrfs_item *item = btrfs_item_nr(eb, nr);
519 write_eb_member(eb, item, struct btrfs_item, key, disk_key);
522 BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64);
524 /* struct btrfs_root_ref */
525 BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64);
526 BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64);
527 BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16);
528 BTRFS_SETGET_STACK_FUNCS(stack_root_ref_dirid, struct btrfs_root_ref, dirid, 64);
529 BTRFS_SETGET_STACK_FUNCS(stack_root_ref_sequence, struct btrfs_root_ref, sequence, 64);
530 BTRFS_SETGET_STACK_FUNCS(stack_root_ref_name_len, struct btrfs_root_ref, name_len, 16);
532 /* struct btrfs_dir_item */
533 BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16);
534 BTRFS_SETGET_FUNCS(dir_flags, struct btrfs_dir_item, type, 8);
535 BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16);
536 BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64);
537 BTRFS_SETGET_STACK_FUNCS(stack_dir_flags, struct btrfs_dir_item, type, 8);
538 BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, data_len, 16);
539 BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, name_len, 16);
540 BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, transid, 64);
542 static inline u8 btrfs_dir_ftype(const struct extent_buffer *eb,
543 const struct btrfs_dir_item *item)
545 return btrfs_dir_flags_to_ftype(btrfs_dir_flags(eb, item));
548 static inline u8 btrfs_stack_dir_ftype(const struct btrfs_dir_item *item)
550 return btrfs_dir_flags_to_ftype(btrfs_stack_dir_flags(item));
553 static inline void btrfs_dir_item_key(const struct extent_buffer *eb,
554 const struct btrfs_dir_item *item,
555 struct btrfs_disk_key *key)
557 read_eb_member(eb, item, struct btrfs_dir_item, location, key);
560 static inline void btrfs_set_dir_item_key(struct extent_buffer *eb,
561 struct btrfs_dir_item *item,
562 const struct btrfs_disk_key *key)
564 write_eb_member(eb, item, struct btrfs_dir_item, location, key);
567 BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header,
569 BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header,
571 BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header,
574 static inline void btrfs_free_space_key(const struct extent_buffer *eb,
575 const struct btrfs_free_space_header *h,
576 struct btrfs_disk_key *key)
578 read_eb_member(eb, h, struct btrfs_free_space_header, location, key);
581 static inline void btrfs_set_free_space_key(struct extent_buffer *eb,
582 struct btrfs_free_space_header *h,
583 const struct btrfs_disk_key *key)
585 write_eb_member(eb, h, struct btrfs_free_space_header, location, key);
588 /* struct btrfs_disk_key */
589 BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, objectid, 64);
590 BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64);
591 BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8);
593 #ifdef __LITTLE_ENDIAN
596 * Optimized helpers for little-endian architectures where CPU and on-disk
597 * structures have the same endianness and we can skip conversions.
600 static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu_key,
601 const struct btrfs_disk_key *disk_key)
603 memcpy(cpu_key, disk_key, sizeof(struct btrfs_key));
606 static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk_key,
607 const struct btrfs_key *cpu_key)
609 memcpy(disk_key, cpu_key, sizeof(struct btrfs_key));
612 static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb,
613 struct btrfs_key *cpu_key, int nr)
615 struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key;
617 btrfs_node_key(eb, disk_key, nr);
620 static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb,
621 struct btrfs_key *cpu_key, int nr)
623 struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key;
625 btrfs_item_key(eb, disk_key, nr);
628 static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb,
629 const struct btrfs_dir_item *item,
630 struct btrfs_key *cpu_key)
632 struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key;
634 btrfs_dir_item_key(eb, item, disk_key);
639 static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu,
640 const struct btrfs_disk_key *disk)
642 cpu->offset = le64_to_cpu(disk->offset);
643 cpu->type = disk->type;
644 cpu->objectid = le64_to_cpu(disk->objectid);
647 static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk,
648 const struct btrfs_key *cpu)
650 disk->offset = cpu_to_le64(cpu->offset);
651 disk->type = cpu->type;
652 disk->objectid = cpu_to_le64(cpu->objectid);
655 static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb,
656 struct btrfs_key *key, int nr)
658 struct btrfs_disk_key disk_key;
660 btrfs_node_key(eb, &disk_key, nr);
661 btrfs_disk_key_to_cpu(key, &disk_key);
664 static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb,
665 struct btrfs_key *key, int nr)
667 struct btrfs_disk_key disk_key;
669 btrfs_item_key(eb, &disk_key, nr);
670 btrfs_disk_key_to_cpu(key, &disk_key);
673 static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb,
674 const struct btrfs_dir_item *item,
675 struct btrfs_key *key)
677 struct btrfs_disk_key disk_key;
679 btrfs_dir_item_key(eb, item, &disk_key);
680 btrfs_disk_key_to_cpu(key, &disk_key);
685 /* struct btrfs_header */
686 BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64);
687 BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, generation, 64);
688 BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64);
689 BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32);
690 BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64);
691 BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8);
692 BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header,
694 BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64);
695 BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, nritems, 32);
696 BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64);
698 static inline int btrfs_header_flag(const struct extent_buffer *eb, u64 flag)
700 return (btrfs_header_flags(eb) & flag) == flag;
703 static inline void btrfs_set_header_flag(struct extent_buffer *eb, u64 flag)
705 u64 flags = btrfs_header_flags(eb);
707 btrfs_set_header_flags(eb, flags | flag);
710 static inline void btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag)
712 u64 flags = btrfs_header_flags(eb);
714 btrfs_set_header_flags(eb, flags & ~flag);
717 static inline int btrfs_header_backref_rev(const struct extent_buffer *eb)
719 u64 flags = btrfs_header_flags(eb);
721 return flags >> BTRFS_BACKREF_REV_SHIFT;
724 static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, int rev)
726 u64 flags = btrfs_header_flags(eb);
728 flags &= ~BTRFS_BACKREF_REV_MASK;
729 flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT;
730 btrfs_set_header_flags(eb, flags);
733 static inline int btrfs_is_leaf(const struct extent_buffer *eb)
735 return btrfs_header_level(eb) == 0;
738 /* struct btrfs_root_item */
739 BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, generation, 64);
740 BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32);
741 BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64);
742 BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8);
744 BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, generation, 64);
745 BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64);
746 BTRFS_SETGET_STACK_FUNCS(root_drop_level, struct btrfs_root_item, drop_level, 8);
747 BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8);
748 BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64);
749 BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32);
750 BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64);
751 BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64);
752 BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64);
753 BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item,
755 BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item,
757 BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, ctransid, 64);
758 BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, otransid, 64);
759 BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, stransid, 64);
760 BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, rtransid, 64);
762 /* struct btrfs_root_backup */
763 BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup,
765 BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup,
767 BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup,
770 BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup,
772 BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup,
774 BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup,
775 chunk_root_level, 8);
777 BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup,
779 BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup,
780 extent_root_gen, 64);
781 BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup,
782 extent_root_level, 8);
784 BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup,
786 BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup,
788 BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup,
791 BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup,
793 BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup,
795 BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup,
798 BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup,
800 BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup,
802 BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup,
804 BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup,
806 BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup,
808 BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup,
811 /* struct btrfs_balance_item */
812 BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64);
814 static inline void btrfs_balance_data(const struct extent_buffer *eb,
815 const struct btrfs_balance_item *bi,
816 struct btrfs_disk_balance_args *ba)
818 read_eb_member(eb, bi, struct btrfs_balance_item, data, ba);
821 static inline void btrfs_set_balance_data(struct extent_buffer *eb,
822 struct btrfs_balance_item *bi,
823 const struct btrfs_disk_balance_args *ba)
825 write_eb_member(eb, bi, struct btrfs_balance_item, data, ba);
828 static inline void btrfs_balance_meta(const struct extent_buffer *eb,
829 const struct btrfs_balance_item *bi,
830 struct btrfs_disk_balance_args *ba)
832 read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba);
835 static inline void btrfs_set_balance_meta(struct extent_buffer *eb,
836 struct btrfs_balance_item *bi,
837 const struct btrfs_disk_balance_args *ba)
839 write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba);
842 static inline void btrfs_balance_sys(const struct extent_buffer *eb,
843 const struct btrfs_balance_item *bi,
844 struct btrfs_disk_balance_args *ba)
846 read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba);
849 static inline void btrfs_set_balance_sys(struct extent_buffer *eb,
850 struct btrfs_balance_item *bi,
851 const struct btrfs_disk_balance_args *ba)
853 write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba);
856 /* struct btrfs_super_block */
857 BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64);
858 BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64);
859 BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block,
861 BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64);
862 BTRFS_SETGET_STACK_FUNCS(super_sys_array_size,
863 struct btrfs_super_block, sys_chunk_array_size, 32);
864 BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation,
865 struct btrfs_super_block, chunk_root_generation, 64);
866 BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block,
868 BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block,
870 BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block,
871 chunk_root_level, 8);
872 BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, log_root, 64);
873 BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block,
875 BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block,
877 BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block,
879 BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block,
881 BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block,
883 BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block,
885 BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block,
886 root_dir_objectid, 64);
887 BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block,
889 BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block,
891 BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block,
892 compat_ro_flags, 64);
893 BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block,
895 BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block,
897 BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block,
898 cache_generation, 64);
899 BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64);
900 BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block,
901 uuid_tree_generation, 64);
902 BTRFS_SETGET_STACK_FUNCS(super_nr_global_roots, struct btrfs_super_block,
903 nr_global_roots, 64);
905 /* struct btrfs_file_extent_item */
906 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_type, struct btrfs_file_extent_item,
908 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr,
909 struct btrfs_file_extent_item, disk_bytenr, 64);
910 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset,
911 struct btrfs_file_extent_item, offset, 64);
912 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation,
913 struct btrfs_file_extent_item, generation, 64);
914 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes,
915 struct btrfs_file_extent_item, num_bytes, 64);
916 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_ram_bytes,
917 struct btrfs_file_extent_item, ram_bytes, 64);
918 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes,
919 struct btrfs_file_extent_item, disk_num_bytes, 64);
920 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression,
921 struct btrfs_file_extent_item, compression, 8);
924 BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8);
925 BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item,
927 BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item,
929 BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item,
931 BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item,
933 BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item,
935 BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item,
937 BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item,
939 BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item,
941 BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item,
944 /* btrfs_qgroup_status_item */
945 BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item,
947 BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item,
949 BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item,
951 BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item,
953 BTRFS_SETGET_FUNCS(qgroup_status_enable_gen, struct btrfs_qgroup_status_item,
956 /* btrfs_qgroup_info_item */
957 BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item,
959 BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64);
960 BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item,
962 BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64);
963 BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item,
966 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation,
967 struct btrfs_qgroup_info_item, generation, 64);
968 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item,
970 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr,
971 struct btrfs_qgroup_info_item, rfer_cmpr, 64);
972 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item,
974 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr,
975 struct btrfs_qgroup_info_item, excl_cmpr, 64);
977 /* btrfs_qgroup_limit_item */
978 BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, flags, 64);
979 BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item,
981 BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item,
983 BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item,
985 BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item,
987 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_flags,
988 struct btrfs_qgroup_limit_item, flags, 64);
989 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_max_rfer,
990 struct btrfs_qgroup_limit_item, max_rfer, 64);
991 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_max_excl,
992 struct btrfs_qgroup_limit_item, max_excl, 64);
993 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_rfer,
994 struct btrfs_qgroup_limit_item, rsv_rfer, 64);
995 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_excl,
996 struct btrfs_qgroup_limit_item, rsv_excl, 64);
998 /* btrfs_dev_replace_item */
999 BTRFS_SETGET_FUNCS(dev_replace_src_devid,
1000 struct btrfs_dev_replace_item, src_devid, 64);
1001 BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode,
1002 struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode,
1004 BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item,
1006 BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item,
1008 BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item,
1010 BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item,
1011 num_write_errors, 64);
1012 BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors,
1013 struct btrfs_dev_replace_item, num_uncorrectable_read_errors,
1015 BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item,
1017 BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item,
1020 BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid,
1021 struct btrfs_dev_replace_item, src_devid, 64);
1022 BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode,
1023 struct btrfs_dev_replace_item,
1024 cont_reading_from_srcdev_mode, 64);
1025 BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state,
1026 struct btrfs_dev_replace_item, replace_state, 64);
1027 BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started,
1028 struct btrfs_dev_replace_item, time_started, 64);
1029 BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped,
1030 struct btrfs_dev_replace_item, time_stopped, 64);
1031 BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors,
1032 struct btrfs_dev_replace_item, num_write_errors, 64);
1033 BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors,
1034 struct btrfs_dev_replace_item,
1035 num_uncorrectable_read_errors, 64);
1036 BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left,
1037 struct btrfs_dev_replace_item, cursor_left, 64);
1038 BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right,
1039 struct btrfs_dev_replace_item, cursor_right, 64);
1041 /* btrfs_verity_descriptor_item */
1042 BTRFS_SETGET_FUNCS(verity_descriptor_encryption, struct btrfs_verity_descriptor_item,
1044 BTRFS_SETGET_FUNCS(verity_descriptor_size, struct btrfs_verity_descriptor_item,
1046 BTRFS_SETGET_STACK_FUNCS(stack_verity_descriptor_encryption,
1047 struct btrfs_verity_descriptor_item, encryption, 8);
1048 BTRFS_SETGET_STACK_FUNCS(stack_verity_descriptor_size,
1049 struct btrfs_verity_descriptor_item, size, 64);
1051 /* Cast into the data area of the leaf. */
1052 #define btrfs_item_ptr(leaf, slot, type) \
1053 ((type *)(btrfs_item_nr_offset(leaf, 0) + btrfs_item_offset(leaf, slot)))
1055 #define btrfs_item_ptr_offset(leaf, slot) \
1056 ((unsigned long)(btrfs_item_nr_offset(leaf, 0) + btrfs_item_offset(leaf, slot)))