Commit | Line | Data |
---|---|---|
5b316468 NA |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | ||
3 | #ifndef BTRFS_ZONED_H | |
4 | #define BTRFS_ZONED_H | |
5 | ||
6 | #include <linux/types.h> | |
b70f5097 | 7 | #include <linux/blkdev.h> |
12659251 NA |
8 | #include "volumes.h" |
9 | #include "disk-io.h" | |
40ab3be1 | 10 | #include "block-group.h" |
869f4cdc | 11 | #include "btrfs_inode.h" |
5b316468 | 12 | |
18bb8bbf JT |
13 | /* |
14 | * Block groups with more than this value (percents) of unusable space will be | |
15 | * scheduled for background reclaim. | |
16 | */ | |
17 | #define BTRFS_DEFAULT_RECLAIM_THRESH 75 | |
18 | ||
5b316468 NA |
19 | struct btrfs_zoned_device_info { |
20 | /* | |
21 | * Number of zones, zone size and types of zones if bdev is a | |
22 | * zoned block device. | |
23 | */ | |
24 | u64 zone_size; | |
25 | u8 zone_size_shift; | |
26 | u32 nr_zones; | |
ea6f8ddc NA |
27 | unsigned int max_active_zones; |
28 | atomic_t active_zones_left; | |
5b316468 NA |
29 | unsigned long *seq_zones; |
30 | unsigned long *empty_zones; | |
ea6f8ddc | 31 | unsigned long *active_zones; |
16beac87 | 32 | struct blk_zone *zone_cache; |
12659251 | 33 | struct blk_zone sb_zones[2 * BTRFS_SUPER_MIRROR_MAX]; |
5b316468 NA |
34 | }; |
35 | ||
36 | #ifdef CONFIG_BLK_DEV_ZONED | |
37 | int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos, | |
38 | struct blk_zone *zone); | |
73651042 | 39 | int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info); |
16beac87 | 40 | int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache); |
5b316468 | 41 | void btrfs_destroy_dev_zone_info(struct btrfs_device *device); |
b70f5097 | 42 | int btrfs_check_zoned_mode(struct btrfs_fs_info *fs_info); |
5d1ab66c | 43 | int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info); |
12659251 NA |
44 | int btrfs_sb_log_location_bdev(struct block_device *bdev, int mirror, int rw, |
45 | u64 *bytenr_ret); | |
46 | int btrfs_sb_log_location(struct btrfs_device *device, int mirror, int rw, | |
47 | u64 *bytenr_ret); | |
8376d9e1 | 48 | int btrfs_advance_sb_log(struct btrfs_device *device, int mirror); |
12659251 | 49 | int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror); |
1cd6121f NA |
50 | u64 btrfs_find_allocatable_zones(struct btrfs_device *device, u64 hole_start, |
51 | u64 hole_end, u64 num_bytes); | |
52 | int btrfs_reset_device_zone(struct btrfs_device *device, u64 physical, | |
53 | u64 length, u64 *bytes); | |
54 | int btrfs_ensure_empty_zones(struct btrfs_device *device, u64 start, u64 size); | |
a94794d5 | 55 | int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new); |
169e0da9 | 56 | void btrfs_calc_zone_unusable(struct btrfs_block_group *cache); |
d3575156 NA |
57 | void btrfs_redirty_list_add(struct btrfs_transaction *trans, |
58 | struct extent_buffer *eb); | |
59 | void btrfs_free_redirty_list(struct btrfs_transaction *trans); | |
e380adfc | 60 | bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start); |
d8e3fb10 NA |
61 | void btrfs_record_physical_zoned(struct inode *inode, u64 file_offset, |
62 | struct bio *bio); | |
63 | void btrfs_rewrite_logical_zoned(struct btrfs_ordered_extent *ordered); | |
0bc09ca1 NA |
64 | bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info, |
65 | struct extent_buffer *eb, | |
66 | struct btrfs_block_group **cache_ret); | |
67 | void btrfs_revert_meta_write_pointer(struct btrfs_block_group *cache, | |
68 | struct extent_buffer *eb); | |
de17addc | 69 | int btrfs_zoned_issue_zeroout(struct btrfs_device *device, u64 physical, u64 length); |
7db1c5d1 NA |
70 | int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev, u64 logical, |
71 | u64 physical_start, u64 physical_pos); | |
e7ff9e6b JT |
72 | struct btrfs_device *btrfs_zoned_get_device(struct btrfs_fs_info *fs_info, |
73 | u64 logical, u64 length); | |
afba2bc0 NA |
74 | bool btrfs_zone_activate(struct btrfs_block_group *block_group); |
75 | int btrfs_zone_finish(struct btrfs_block_group *block_group); | |
82187d2e | 76 | bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices, u64 flags); |
be1a1d7a NA |
77 | void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info, u64 logical, |
78 | u64 length); | |
c2707a25 | 79 | void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg); |
16beac87 | 80 | void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info); |
5b316468 NA |
81 | #else /* CONFIG_BLK_DEV_ZONED */ |
82 | static inline int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos, | |
83 | struct blk_zone *zone) | |
84 | { | |
85 | return 0; | |
86 | } | |
87 | ||
73651042 NA |
88 | static inline int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info) |
89 | { | |
90 | return 0; | |
91 | } | |
92 | ||
16beac87 NA |
93 | static inline int btrfs_get_dev_zone_info(struct btrfs_device *device, |
94 | bool populate_cache) | |
5b316468 NA |
95 | { |
96 | return 0; | |
97 | } | |
98 | ||
99 | static inline void btrfs_destroy_dev_zone_info(struct btrfs_device *device) { } | |
100 | ||
b70f5097 NA |
101 | static inline int btrfs_check_zoned_mode(const struct btrfs_fs_info *fs_info) |
102 | { | |
103 | if (!btrfs_is_zoned(fs_info)) | |
104 | return 0; | |
105 | ||
106 | btrfs_err(fs_info, "zoned block devices support is not enabled"); | |
107 | return -EOPNOTSUPP; | |
108 | } | |
109 | ||
5d1ab66c NA |
110 | static inline int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info) |
111 | { | |
112 | return 0; | |
113 | } | |
114 | ||
12659251 NA |
115 | static inline int btrfs_sb_log_location_bdev(struct block_device *bdev, |
116 | int mirror, int rw, u64 *bytenr_ret) | |
117 | { | |
118 | *bytenr_ret = btrfs_sb_offset(mirror); | |
119 | return 0; | |
120 | } | |
121 | ||
122 | static inline int btrfs_sb_log_location(struct btrfs_device *device, int mirror, | |
123 | int rw, u64 *bytenr_ret) | |
124 | { | |
125 | *bytenr_ret = btrfs_sb_offset(mirror); | |
126 | return 0; | |
127 | } | |
128 | ||
8376d9e1 NA |
129 | static inline int btrfs_advance_sb_log(struct btrfs_device *device, int mirror) |
130 | { | |
131 | return 0; | |
132 | } | |
12659251 NA |
133 | |
134 | static inline int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror) | |
135 | { | |
136 | return 0; | |
137 | } | |
138 | ||
1cd6121f NA |
139 | static inline u64 btrfs_find_allocatable_zones(struct btrfs_device *device, |
140 | u64 hole_start, u64 hole_end, | |
141 | u64 num_bytes) | |
142 | { | |
143 | return hole_start; | |
144 | } | |
145 | ||
146 | static inline int btrfs_reset_device_zone(struct btrfs_device *device, | |
147 | u64 physical, u64 length, u64 *bytes) | |
148 | { | |
149 | *bytes = 0; | |
150 | return 0; | |
151 | } | |
152 | ||
153 | static inline int btrfs_ensure_empty_zones(struct btrfs_device *device, | |
154 | u64 start, u64 size) | |
155 | { | |
156 | return 0; | |
157 | } | |
158 | ||
08e11a3d | 159 | static inline int btrfs_load_block_group_zone_info( |
a94794d5 | 160 | struct btrfs_block_group *cache, bool new) |
08e11a3d NA |
161 | { |
162 | return 0; | |
163 | } | |
164 | ||
169e0da9 NA |
165 | static inline void btrfs_calc_zone_unusable(struct btrfs_block_group *cache) { } |
166 | ||
d3575156 NA |
167 | static inline void btrfs_redirty_list_add(struct btrfs_transaction *trans, |
168 | struct extent_buffer *eb) { } | |
169 | static inline void btrfs_free_redirty_list(struct btrfs_transaction *trans) { } | |
170 | ||
e380adfc | 171 | static inline bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start) |
08f45559 JT |
172 | { |
173 | return false; | |
174 | } | |
d8e3fb10 NA |
175 | |
176 | static inline void btrfs_record_physical_zoned(struct inode *inode, | |
177 | u64 file_offset, struct bio *bio) | |
178 | { | |
179 | } | |
180 | ||
181 | static inline void btrfs_rewrite_logical_zoned( | |
182 | struct btrfs_ordered_extent *ordered) { } | |
183 | ||
0bc09ca1 NA |
184 | static inline bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info, |
185 | struct extent_buffer *eb, | |
186 | struct btrfs_block_group **cache_ret) | |
187 | { | |
188 | return true; | |
189 | } | |
190 | ||
191 | static inline void btrfs_revert_meta_write_pointer( | |
192 | struct btrfs_block_group *cache, | |
193 | struct extent_buffer *eb) | |
194 | { | |
195 | } | |
196 | ||
de17addc NA |
197 | static inline int btrfs_zoned_issue_zeroout(struct btrfs_device *device, |
198 | u64 physical, u64 length) | |
199 | { | |
200 | return -EOPNOTSUPP; | |
201 | } | |
202 | ||
7db1c5d1 NA |
203 | static inline int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev, |
204 | u64 logical, u64 physical_start, | |
205 | u64 physical_pos) | |
206 | { | |
207 | return -EOPNOTSUPP; | |
208 | } | |
209 | ||
e7ff9e6b JT |
210 | static inline struct btrfs_device *btrfs_zoned_get_device( |
211 | struct btrfs_fs_info *fs_info, | |
212 | u64 logical, u64 length) | |
213 | { | |
214 | return ERR_PTR(-EOPNOTSUPP); | |
215 | } | |
216 | ||
afba2bc0 NA |
217 | static inline bool btrfs_zone_activate(struct btrfs_block_group *block_group) |
218 | { | |
219 | return true; | |
220 | } | |
221 | ||
222 | static inline int btrfs_zone_finish(struct btrfs_block_group *block_group) | |
223 | { | |
224 | return 0; | |
225 | } | |
226 | ||
a85f05e5 | 227 | static inline bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices, |
82187d2e | 228 | u64 flags) |
a85f05e5 NA |
229 | { |
230 | return true; | |
231 | } | |
232 | ||
be1a1d7a NA |
233 | static inline void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info, |
234 | u64 logical, u64 length) { } | |
235 | ||
c2707a25 JT |
236 | static inline void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg) { } |
237 | ||
16beac87 | 238 | static inline void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info) { } |
5b316468 NA |
239 | #endif |
240 | ||
241 | static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos) | |
242 | { | |
243 | struct btrfs_zoned_device_info *zone_info = device->zone_info; | |
244 | ||
245 | if (!zone_info) | |
246 | return false; | |
247 | ||
248 | return test_bit(pos >> zone_info->zone_size_shift, zone_info->seq_zones); | |
249 | } | |
250 | ||
251 | static inline bool btrfs_dev_is_empty_zone(struct btrfs_device *device, u64 pos) | |
252 | { | |
253 | struct btrfs_zoned_device_info *zone_info = device->zone_info; | |
254 | ||
255 | if (!zone_info) | |
256 | return true; | |
257 | ||
258 | return test_bit(pos >> zone_info->zone_size_shift, zone_info->empty_zones); | |
259 | } | |
260 | ||
261 | static inline void btrfs_dev_set_empty_zone_bit(struct btrfs_device *device, | |
262 | u64 pos, bool set) | |
263 | { | |
264 | struct btrfs_zoned_device_info *zone_info = device->zone_info; | |
265 | unsigned int zno; | |
266 | ||
267 | if (!zone_info) | |
268 | return; | |
269 | ||
270 | zno = pos >> zone_info->zone_size_shift; | |
271 | if (set) | |
272 | set_bit(zno, zone_info->empty_zones); | |
273 | else | |
274 | clear_bit(zno, zone_info->empty_zones); | |
275 | } | |
276 | ||
277 | static inline void btrfs_dev_set_zone_empty(struct btrfs_device *device, u64 pos) | |
278 | { | |
279 | btrfs_dev_set_empty_zone_bit(device, pos, true); | |
280 | } | |
281 | ||
282 | static inline void btrfs_dev_clear_zone_empty(struct btrfs_device *device, u64 pos) | |
283 | { | |
284 | btrfs_dev_set_empty_zone_bit(device, pos, false); | |
285 | } | |
286 | ||
b70f5097 NA |
287 | static inline bool btrfs_check_device_zone_type(const struct btrfs_fs_info *fs_info, |
288 | struct block_device *bdev) | |
289 | { | |
b70f5097 | 290 | if (btrfs_is_zoned(fs_info)) { |
3c9daa09 JT |
291 | /* |
292 | * We can allow a regular device on a zoned filesystem, because | |
293 | * we will emulate the zoned capabilities. | |
294 | */ | |
295 | if (!bdev_is_zoned(bdev)) | |
296 | return true; | |
297 | ||
298 | return fs_info->zone_size == | |
299 | (bdev_zone_sectors(bdev) << SECTOR_SHIFT); | |
b70f5097 NA |
300 | } |
301 | ||
302 | /* Do not allow Host Manged zoned device */ | |
303 | return bdev_zoned_model(bdev) != BLK_ZONED_HM; | |
304 | } | |
305 | ||
12659251 NA |
306 | static inline bool btrfs_check_super_location(struct btrfs_device *device, u64 pos) |
307 | { | |
308 | /* | |
309 | * On a non-zoned device, any address is OK. On a zoned device, | |
310 | * non-SEQUENTIAL WRITE REQUIRED zones are capable. | |
311 | */ | |
312 | return device->zone_info == NULL || !btrfs_dev_is_sequential(device, pos); | |
313 | } | |
314 | ||
dcba6e48 NA |
315 | static inline bool btrfs_can_zone_reset(struct btrfs_device *device, |
316 | u64 physical, u64 length) | |
317 | { | |
318 | u64 zone_size; | |
319 | ||
320 | if (!btrfs_dev_is_sequential(device, physical)) | |
321 | return false; | |
322 | ||
323 | zone_size = device->zone_info->zone_size; | |
324 | if (!IS_ALIGNED(physical, zone_size) || !IS_ALIGNED(length, zone_size)) | |
325 | return false; | |
326 | ||
327 | return true; | |
328 | } | |
329 | ||
0bc09ca1 NA |
330 | static inline void btrfs_zoned_meta_io_lock(struct btrfs_fs_info *fs_info) |
331 | { | |
332 | if (!btrfs_is_zoned(fs_info)) | |
333 | return; | |
334 | mutex_lock(&fs_info->zoned_meta_io_lock); | |
335 | } | |
336 | ||
337 | static inline void btrfs_zoned_meta_io_unlock(struct btrfs_fs_info *fs_info) | |
338 | { | |
339 | if (!btrfs_is_zoned(fs_info)) | |
340 | return; | |
341 | mutex_unlock(&fs_info->zoned_meta_io_lock); | |
342 | } | |
343 | ||
40ab3be1 NA |
344 | static inline void btrfs_clear_treelog_bg(struct btrfs_block_group *bg) |
345 | { | |
346 | struct btrfs_fs_info *fs_info = bg->fs_info; | |
347 | ||
348 | if (!btrfs_is_zoned(fs_info)) | |
349 | return; | |
350 | ||
351 | spin_lock(&fs_info->treelog_bg_lock); | |
352 | if (fs_info->treelog_bg == bg->start) | |
353 | fs_info->treelog_bg = 0; | |
354 | spin_unlock(&fs_info->treelog_bg_lock); | |
355 | } | |
356 | ||
869f4cdc JT |
357 | static inline void btrfs_zoned_data_reloc_lock(struct btrfs_inode *inode) |
358 | { | |
359 | struct btrfs_root *root = inode->root; | |
360 | ||
361 | if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info)) | |
5f0addf7 | 362 | mutex_lock(&root->fs_info->zoned_data_reloc_io_lock); |
869f4cdc JT |
363 | } |
364 | ||
365 | static inline void btrfs_zoned_data_reloc_unlock(struct btrfs_inode *inode) | |
366 | { | |
367 | struct btrfs_root *root = inode->root; | |
368 | ||
369 | if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info)) | |
5f0addf7 | 370 | mutex_unlock(&root->fs_info->zoned_data_reloc_io_lock); |
869f4cdc JT |
371 | } |
372 | ||
5b316468 | 373 | #endif |