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1/* SPDX-License-Identifier: GPL-2.0 */
2
3#ifndef BTRFS_ZONED_H
4#define BTRFS_ZONED_H
5
6#include <linux/types.h>
7#include <linux/atomic.h>
8#include <linux/blkdev.h>
9#include <linux/blkzoned.h>
10#include <linux/errno.h>
11#include <linux/spinlock.h>
12#include <linux/mutex.h>
13#include "messages.h"
14#include "volumes.h"
15#include "disk-io.h"
16#include "block-group.h"
17#include "btrfs_inode.h"
18#include "fs.h"
19
20struct block_device;
21struct extent_buffer;
22struct btrfs_bio;
23struct btrfs_ordered_extent;
24struct btrfs_fs_info;
25struct btrfs_space_info;
26struct btrfs_eb_write_context;
27struct btrfs_fs_devices;
28
29#define BTRFS_DEFAULT_RECLAIM_THRESH (75)
30
31struct btrfs_zoned_device_info {
32 /*
33 * Number of zones, zone size and types of zones if bdev is a
34 * zoned block device.
35 */
36 u64 zone_size;
37 u8 zone_size_shift;
38 u32 nr_zones;
39 unsigned int max_active_zones;
40 /*
41 * Reserved active zones for one metadata and one system block group.
42 * It can vary per-device depending on the allocation status.
43 */
44 int reserved_active_zones;
45 atomic_t active_zones_left;
46 unsigned long *seq_zones;
47 unsigned long *empty_zones;
48 unsigned long *active_zones;
49 struct blk_zone *zone_cache;
50 struct blk_zone sb_zones[2 * BTRFS_SUPER_MIRROR_MAX];
51};
52
53void btrfs_finish_ordered_zoned(struct btrfs_ordered_extent *ordered);
54
55#ifdef CONFIG_BLK_DEV_ZONED
56int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info);
57int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache);
58void btrfs_destroy_dev_zone_info(struct btrfs_device *device);
59struct btrfs_zoned_device_info *btrfs_clone_dev_zone_info(struct btrfs_device *orig_dev);
60int btrfs_check_zoned_mode(struct btrfs_fs_info *fs_info);
61int btrfs_check_mountopts_zoned(const struct btrfs_fs_info *info,
62 unsigned long long *mount_opt);
63int btrfs_sb_log_location_bdev(struct block_device *bdev, int mirror, int rw,
64 u64 *bytenr_ret);
65int btrfs_sb_log_location(struct btrfs_device *device, int mirror, int rw,
66 u64 *bytenr_ret);
67int btrfs_advance_sb_log(struct btrfs_device *device, int mirror);
68int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror);
69u64 btrfs_find_allocatable_zones(struct btrfs_device *device, u64 hole_start,
70 u64 hole_end, u64 num_bytes);
71int btrfs_reset_device_zone(struct btrfs_device *device, u64 physical,
72 u64 length, u64 *bytes);
73int btrfs_ensure_empty_zones(struct btrfs_device *device, u64 start, u64 size);
74int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new);
75void btrfs_calc_zone_unusable(struct btrfs_block_group *cache);
76bool btrfs_use_zone_append(struct btrfs_bio *bbio);
77void btrfs_record_physical_zoned(struct btrfs_bio *bbio);
78int btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
79 struct btrfs_eb_write_context *ctx);
80int btrfs_zoned_issue_zeroout(struct btrfs_device *device, u64 physical, u64 length);
81int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev, u64 logical,
82 u64 physical_start, u64 physical_pos);
83bool btrfs_zone_activate(struct btrfs_block_group *block_group);
84int btrfs_zone_finish(struct btrfs_block_group *block_group);
85bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices, u64 flags);
86void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info, u64 logical,
87 u64 length);
88void btrfs_schedule_zone_finish_bg(struct btrfs_block_group *bg,
89 struct extent_buffer *eb);
90void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg);
91void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info);
92bool btrfs_zoned_should_reclaim(const struct btrfs_fs_info *fs_info);
93void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info, u64 logical,
94 u64 length);
95int btrfs_zone_finish_one_bg(struct btrfs_fs_info *fs_info);
96int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info,
97 struct btrfs_space_info *space_info, bool do_finish);
98void btrfs_check_active_zone_reservation(struct btrfs_fs_info *fs_info);
99#else /* CONFIG_BLK_DEV_ZONED */
100
101static inline int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info)
102{
103 return 0;
104}
105
106static inline int btrfs_get_dev_zone_info(struct btrfs_device *device,
107 bool populate_cache)
108{
109 return 0;
110}
111
112static inline void btrfs_destroy_dev_zone_info(struct btrfs_device *device) { }
113
114/*
115 * In case the kernel is compiled without CONFIG_BLK_DEV_ZONED we'll never call
116 * into btrfs_clone_dev_zone_info() so it's safe to return NULL here.
117 */
118static inline struct btrfs_zoned_device_info *btrfs_clone_dev_zone_info(
119 struct btrfs_device *orig_dev)
120{
121 return NULL;
122}
123
124static inline int btrfs_check_zoned_mode(const struct btrfs_fs_info *fs_info)
125{
126 if (!btrfs_is_zoned(fs_info))
127 return 0;
128
129 btrfs_err(fs_info, "zoned block devices support is not enabled");
130 return -EOPNOTSUPP;
131}
132
133static inline int btrfs_check_mountopts_zoned(const struct btrfs_fs_info *info,
134 unsigned long long *mount_opt)
135{
136 return 0;
137}
138
139static inline int btrfs_sb_log_location_bdev(struct block_device *bdev,
140 int mirror, int rw, u64 *bytenr_ret)
141{
142 *bytenr_ret = btrfs_sb_offset(mirror);
143 return 0;
144}
145
146static inline int btrfs_sb_log_location(struct btrfs_device *device, int mirror,
147 int rw, u64 *bytenr_ret)
148{
149 *bytenr_ret = btrfs_sb_offset(mirror);
150 return 0;
151}
152
153static inline int btrfs_advance_sb_log(struct btrfs_device *device, int mirror)
154{
155 return 0;
156}
157
158static inline int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror)
159{
160 return 0;
161}
162
163static inline u64 btrfs_find_allocatable_zones(struct btrfs_device *device,
164 u64 hole_start, u64 hole_end,
165 u64 num_bytes)
166{
167 return hole_start;
168}
169
170static inline int btrfs_reset_device_zone(struct btrfs_device *device,
171 u64 physical, u64 length, u64 *bytes)
172{
173 *bytes = 0;
174 return 0;
175}
176
177static inline int btrfs_ensure_empty_zones(struct btrfs_device *device,
178 u64 start, u64 size)
179{
180 return 0;
181}
182
183static inline int btrfs_load_block_group_zone_info(
184 struct btrfs_block_group *cache, bool new)
185{
186 return 0;
187}
188
189static inline void btrfs_calc_zone_unusable(struct btrfs_block_group *cache) { }
190
191static inline bool btrfs_use_zone_append(struct btrfs_bio *bbio)
192{
193 return false;
194}
195
196static inline void btrfs_record_physical_zoned(struct btrfs_bio *bbio)
197{
198}
199
200static inline int btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
201 struct btrfs_eb_write_context *ctx)
202{
203 return 0;
204}
205
206static inline int btrfs_zoned_issue_zeroout(struct btrfs_device *device,
207 u64 physical, u64 length)
208{
209 return -EOPNOTSUPP;
210}
211
212static inline int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev,
213 u64 logical, u64 physical_start,
214 u64 physical_pos)
215{
216 return -EOPNOTSUPP;
217}
218
219static inline bool btrfs_zone_activate(struct btrfs_block_group *block_group)
220{
221 return true;
222}
223
224static inline int btrfs_zone_finish(struct btrfs_block_group *block_group)
225{
226 return 0;
227}
228
229static inline bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices,
230 u64 flags)
231{
232 return true;
233}
234
235static inline void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info,
236 u64 logical, u64 length) { }
237
238static inline void btrfs_schedule_zone_finish_bg(struct btrfs_block_group *bg,
239 struct extent_buffer *eb) { }
240
241static inline void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg) { }
242
243static inline void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info) { }
244
245static inline bool btrfs_zoned_should_reclaim(const struct btrfs_fs_info *fs_info)
246{
247 return false;
248}
249
250static inline void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info,
251 u64 logical, u64 length) { }
252
253static inline int btrfs_zone_finish_one_bg(struct btrfs_fs_info *fs_info)
254{
255 return 1;
256}
257
258static inline int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info,
259 struct btrfs_space_info *space_info,
260 bool do_finish)
261{
262 /* Consider all the block groups are active */
263 return 0;
264}
265
266static inline void btrfs_check_active_zone_reservation(struct btrfs_fs_info *fs_info) { }
267
268#endif
269
270static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos)
271{
272 struct btrfs_zoned_device_info *zone_info = device->zone_info;
273
274 if (!zone_info)
275 return false;
276
277 return test_bit(pos >> zone_info->zone_size_shift, zone_info->seq_zones);
278}
279
280static inline bool btrfs_dev_is_empty_zone(struct btrfs_device *device, u64 pos)
281{
282 struct btrfs_zoned_device_info *zone_info = device->zone_info;
283
284 if (!zone_info)
285 return true;
286
287 return test_bit(pos >> zone_info->zone_size_shift, zone_info->empty_zones);
288}
289
290static inline void btrfs_dev_set_empty_zone_bit(struct btrfs_device *device,
291 u64 pos, bool set)
292{
293 struct btrfs_zoned_device_info *zone_info = device->zone_info;
294 unsigned int zno;
295
296 if (!zone_info)
297 return;
298
299 zno = pos >> zone_info->zone_size_shift;
300 if (set)
301 set_bit(zno, zone_info->empty_zones);
302 else
303 clear_bit(zno, zone_info->empty_zones);
304}
305
306static inline void btrfs_dev_set_zone_empty(struct btrfs_device *device, u64 pos)
307{
308 btrfs_dev_set_empty_zone_bit(device, pos, true);
309}
310
311static inline void btrfs_dev_clear_zone_empty(struct btrfs_device *device, u64 pos)
312{
313 btrfs_dev_set_empty_zone_bit(device, pos, false);
314}
315
316static inline bool btrfs_check_device_zone_type(const struct btrfs_fs_info *fs_info,
317 struct block_device *bdev)
318{
319 if (btrfs_is_zoned(fs_info)) {
320 /*
321 * We can allow a regular device on a zoned filesystem, because
322 * we will emulate the zoned capabilities.
323 */
324 if (!bdev_is_zoned(bdev))
325 return true;
326
327 return fs_info->zone_size ==
328 (bdev_zone_sectors(bdev) << SECTOR_SHIFT);
329 }
330
331 /* Do not allow Host Managed zoned device. */
332 return !bdev_is_zoned(bdev);
333}
334
335static inline bool btrfs_check_super_location(struct btrfs_device *device, u64 pos)
336{
337 /*
338 * On a non-zoned device, any address is OK. On a zoned device,
339 * non-SEQUENTIAL WRITE REQUIRED zones are capable.
340 */
341 return device->zone_info == NULL || !btrfs_dev_is_sequential(device, pos);
342}
343
344static inline bool btrfs_can_zone_reset(struct btrfs_device *device,
345 u64 physical, u64 length)
346{
347 u64 zone_size;
348
349 if (!btrfs_dev_is_sequential(device, physical))
350 return false;
351
352 zone_size = device->zone_info->zone_size;
353 if (!IS_ALIGNED(physical, zone_size) || !IS_ALIGNED(length, zone_size))
354 return false;
355
356 return true;
357}
358
359static inline void btrfs_zoned_meta_io_lock(struct btrfs_fs_info *fs_info)
360{
361 if (!btrfs_is_zoned(fs_info))
362 return;
363 mutex_lock(&fs_info->zoned_meta_io_lock);
364}
365
366static inline void btrfs_zoned_meta_io_unlock(struct btrfs_fs_info *fs_info)
367{
368 if (!btrfs_is_zoned(fs_info))
369 return;
370 mutex_unlock(&fs_info->zoned_meta_io_lock);
371}
372
373static inline void btrfs_clear_treelog_bg(struct btrfs_block_group *bg)
374{
375 struct btrfs_fs_info *fs_info = bg->fs_info;
376
377 if (!btrfs_is_zoned(fs_info))
378 return;
379
380 spin_lock(&fs_info->treelog_bg_lock);
381 if (fs_info->treelog_bg == bg->start)
382 fs_info->treelog_bg = 0;
383 spin_unlock(&fs_info->treelog_bg_lock);
384}
385
386static inline void btrfs_zoned_data_reloc_lock(struct btrfs_inode *inode)
387{
388 struct btrfs_root *root = inode->root;
389
390 if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
391 mutex_lock(&root->fs_info->zoned_data_reloc_io_lock);
392}
393
394static inline void btrfs_zoned_data_reloc_unlock(struct btrfs_inode *inode)
395{
396 struct btrfs_root *root = inode->root;
397
398 if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
399 mutex_unlock(&root->fs_info->zoned_data_reloc_io_lock);
400}
401
402static inline bool btrfs_zoned_bg_is_full(const struct btrfs_block_group *bg)
403{
404 ASSERT(btrfs_is_zoned(bg->fs_info));
405 return (bg->alloc_offset == bg->zone_capacity);
406}
407
408#endif
1/* SPDX-License-Identifier: GPL-2.0 */
2
3#ifndef BTRFS_ZONED_H
4#define BTRFS_ZONED_H
5
6#include <linux/types.h>
7#include <linux/atomic.h>
8#include <linux/blkdev.h>
9#include <linux/blkzoned.h>
10#include <linux/errno.h>
11#include <linux/spinlock.h>
12#include <linux/mutex.h>
13#include "messages.h"
14#include "volumes.h"
15#include "disk-io.h"
16#include "block-group.h"
17#include "btrfs_inode.h"
18#include "fs.h"
19
20struct block_device;
21struct extent_buffer;
22struct btrfs_bio;
23struct btrfs_ordered_extent;
24struct btrfs_fs_info;
25struct btrfs_space_info;
26struct btrfs_eb_write_context;
27struct btrfs_fs_devices;
28
29#define BTRFS_DEFAULT_RECLAIM_THRESH (75)
30
31struct btrfs_zoned_device_info {
32 /*
33 * Number of zones, zone size and types of zones if bdev is a
34 * zoned block device.
35 */
36 u64 zone_size;
37 u8 zone_size_shift;
38 u32 nr_zones;
39 unsigned int max_active_zones;
40 /*
41 * Reserved active zones for one metadata and one system block group.
42 * It can vary per-device depending on the allocation status.
43 */
44 int reserved_active_zones;
45 atomic_t active_zones_left;
46 unsigned long *seq_zones;
47 unsigned long *empty_zones;
48 unsigned long *active_zones;
49 struct blk_zone *zone_cache;
50 struct blk_zone sb_zones[2 * BTRFS_SUPER_MIRROR_MAX];
51};
52
53void btrfs_finish_ordered_zoned(struct btrfs_ordered_extent *ordered);
54
55#ifdef CONFIG_BLK_DEV_ZONED
56int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
57 struct blk_zone *zone);
58int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info);
59int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache);
60void btrfs_destroy_dev_zone_info(struct btrfs_device *device);
61struct btrfs_zoned_device_info *btrfs_clone_dev_zone_info(struct btrfs_device *orig_dev);
62int btrfs_check_zoned_mode(struct btrfs_fs_info *fs_info);
63int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info, unsigned long *mount_opt);
64int btrfs_sb_log_location_bdev(struct block_device *bdev, int mirror, int rw,
65 u64 *bytenr_ret);
66int btrfs_sb_log_location(struct btrfs_device *device, int mirror, int rw,
67 u64 *bytenr_ret);
68int btrfs_advance_sb_log(struct btrfs_device *device, int mirror);
69int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror);
70u64 btrfs_find_allocatable_zones(struct btrfs_device *device, u64 hole_start,
71 u64 hole_end, u64 num_bytes);
72int btrfs_reset_device_zone(struct btrfs_device *device, u64 physical,
73 u64 length, u64 *bytes);
74int btrfs_ensure_empty_zones(struct btrfs_device *device, u64 start, u64 size);
75int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new);
76void btrfs_calc_zone_unusable(struct btrfs_block_group *cache);
77bool btrfs_use_zone_append(struct btrfs_bio *bbio);
78void btrfs_record_physical_zoned(struct btrfs_bio *bbio);
79int btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
80 struct btrfs_eb_write_context *ctx);
81int btrfs_zoned_issue_zeroout(struct btrfs_device *device, u64 physical, u64 length);
82int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev, u64 logical,
83 u64 physical_start, u64 physical_pos);
84bool btrfs_zone_activate(struct btrfs_block_group *block_group);
85int btrfs_zone_finish(struct btrfs_block_group *block_group);
86bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices, u64 flags);
87void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info, u64 logical,
88 u64 length);
89void btrfs_schedule_zone_finish_bg(struct btrfs_block_group *bg,
90 struct extent_buffer *eb);
91void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg);
92void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info);
93bool btrfs_zoned_should_reclaim(struct btrfs_fs_info *fs_info);
94void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info, u64 logical,
95 u64 length);
96int btrfs_zone_finish_one_bg(struct btrfs_fs_info *fs_info);
97int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info,
98 struct btrfs_space_info *space_info, bool do_finish);
99void btrfs_check_active_zone_reservation(struct btrfs_fs_info *fs_info);
100#else /* CONFIG_BLK_DEV_ZONED */
101static inline int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
102 struct blk_zone *zone)
103{
104 return 0;
105}
106
107static inline int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info)
108{
109 return 0;
110}
111
112static inline int btrfs_get_dev_zone_info(struct btrfs_device *device,
113 bool populate_cache)
114{
115 return 0;
116}
117
118static inline void btrfs_destroy_dev_zone_info(struct btrfs_device *device) { }
119
120/*
121 * In case the kernel is compiled without CONFIG_BLK_DEV_ZONED we'll never call
122 * into btrfs_clone_dev_zone_info() so it's safe to return NULL here.
123 */
124static inline struct btrfs_zoned_device_info *btrfs_clone_dev_zone_info(
125 struct btrfs_device *orig_dev)
126{
127 return NULL;
128}
129
130static inline int btrfs_check_zoned_mode(const struct btrfs_fs_info *fs_info)
131{
132 if (!btrfs_is_zoned(fs_info))
133 return 0;
134
135 btrfs_err(fs_info, "zoned block devices support is not enabled");
136 return -EOPNOTSUPP;
137}
138
139static inline int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info,
140 unsigned long *mount_opt)
141{
142 return 0;
143}
144
145static inline int btrfs_sb_log_location_bdev(struct block_device *bdev,
146 int mirror, int rw, u64 *bytenr_ret)
147{
148 *bytenr_ret = btrfs_sb_offset(mirror);
149 return 0;
150}
151
152static inline int btrfs_sb_log_location(struct btrfs_device *device, int mirror,
153 int rw, u64 *bytenr_ret)
154{
155 *bytenr_ret = btrfs_sb_offset(mirror);
156 return 0;
157}
158
159static inline int btrfs_advance_sb_log(struct btrfs_device *device, int mirror)
160{
161 return 0;
162}
163
164static inline int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror)
165{
166 return 0;
167}
168
169static inline u64 btrfs_find_allocatable_zones(struct btrfs_device *device,
170 u64 hole_start, u64 hole_end,
171 u64 num_bytes)
172{
173 return hole_start;
174}
175
176static inline int btrfs_reset_device_zone(struct btrfs_device *device,
177 u64 physical, u64 length, u64 *bytes)
178{
179 *bytes = 0;
180 return 0;
181}
182
183static inline int btrfs_ensure_empty_zones(struct btrfs_device *device,
184 u64 start, u64 size)
185{
186 return 0;
187}
188
189static inline int btrfs_load_block_group_zone_info(
190 struct btrfs_block_group *cache, bool new)
191{
192 return 0;
193}
194
195static inline void btrfs_calc_zone_unusable(struct btrfs_block_group *cache) { }
196
197static inline bool btrfs_use_zone_append(struct btrfs_bio *bbio)
198{
199 return false;
200}
201
202static inline void btrfs_record_physical_zoned(struct btrfs_bio *bbio)
203{
204}
205
206static inline int btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
207 struct btrfs_eb_write_context *ctx)
208{
209 return 0;
210}
211
212static inline int btrfs_zoned_issue_zeroout(struct btrfs_device *device,
213 u64 physical, u64 length)
214{
215 return -EOPNOTSUPP;
216}
217
218static inline int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev,
219 u64 logical, u64 physical_start,
220 u64 physical_pos)
221{
222 return -EOPNOTSUPP;
223}
224
225static inline bool btrfs_zone_activate(struct btrfs_block_group *block_group)
226{
227 return true;
228}
229
230static inline int btrfs_zone_finish(struct btrfs_block_group *block_group)
231{
232 return 0;
233}
234
235static inline bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices,
236 u64 flags)
237{
238 return true;
239}
240
241static inline void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info,
242 u64 logical, u64 length) { }
243
244static inline void btrfs_schedule_zone_finish_bg(struct btrfs_block_group *bg,
245 struct extent_buffer *eb) { }
246
247static inline void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg) { }
248
249static inline void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info) { }
250
251static inline bool btrfs_zoned_should_reclaim(struct btrfs_fs_info *fs_info)
252{
253 return false;
254}
255
256static inline void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info,
257 u64 logical, u64 length) { }
258
259static inline int btrfs_zone_finish_one_bg(struct btrfs_fs_info *fs_info)
260{
261 return 1;
262}
263
264static inline int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info,
265 struct btrfs_space_info *space_info,
266 bool do_finish)
267{
268 /* Consider all the block groups are active */
269 return 0;
270}
271
272static inline void btrfs_check_active_zone_reservation(struct btrfs_fs_info *fs_info) { }
273
274#endif
275
276static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos)
277{
278 struct btrfs_zoned_device_info *zone_info = device->zone_info;
279
280 if (!zone_info)
281 return false;
282
283 return test_bit(pos >> zone_info->zone_size_shift, zone_info->seq_zones);
284}
285
286static inline bool btrfs_dev_is_empty_zone(struct btrfs_device *device, u64 pos)
287{
288 struct btrfs_zoned_device_info *zone_info = device->zone_info;
289
290 if (!zone_info)
291 return true;
292
293 return test_bit(pos >> zone_info->zone_size_shift, zone_info->empty_zones);
294}
295
296static inline void btrfs_dev_set_empty_zone_bit(struct btrfs_device *device,
297 u64 pos, bool set)
298{
299 struct btrfs_zoned_device_info *zone_info = device->zone_info;
300 unsigned int zno;
301
302 if (!zone_info)
303 return;
304
305 zno = pos >> zone_info->zone_size_shift;
306 if (set)
307 set_bit(zno, zone_info->empty_zones);
308 else
309 clear_bit(zno, zone_info->empty_zones);
310}
311
312static inline void btrfs_dev_set_zone_empty(struct btrfs_device *device, u64 pos)
313{
314 btrfs_dev_set_empty_zone_bit(device, pos, true);
315}
316
317static inline void btrfs_dev_clear_zone_empty(struct btrfs_device *device, u64 pos)
318{
319 btrfs_dev_set_empty_zone_bit(device, pos, false);
320}
321
322static inline bool btrfs_check_device_zone_type(const struct btrfs_fs_info *fs_info,
323 struct block_device *bdev)
324{
325 if (btrfs_is_zoned(fs_info)) {
326 /*
327 * We can allow a regular device on a zoned filesystem, because
328 * we will emulate the zoned capabilities.
329 */
330 if (!bdev_is_zoned(bdev))
331 return true;
332
333 return fs_info->zone_size ==
334 (bdev_zone_sectors(bdev) << SECTOR_SHIFT);
335 }
336
337 /* Do not allow Host Managed zoned device. */
338 return !bdev_is_zoned(bdev);
339}
340
341static inline bool btrfs_check_super_location(struct btrfs_device *device, u64 pos)
342{
343 /*
344 * On a non-zoned device, any address is OK. On a zoned device,
345 * non-SEQUENTIAL WRITE REQUIRED zones are capable.
346 */
347 return device->zone_info == NULL || !btrfs_dev_is_sequential(device, pos);
348}
349
350static inline bool btrfs_can_zone_reset(struct btrfs_device *device,
351 u64 physical, u64 length)
352{
353 u64 zone_size;
354
355 if (!btrfs_dev_is_sequential(device, physical))
356 return false;
357
358 zone_size = device->zone_info->zone_size;
359 if (!IS_ALIGNED(physical, zone_size) || !IS_ALIGNED(length, zone_size))
360 return false;
361
362 return true;
363}
364
365static inline void btrfs_zoned_meta_io_lock(struct btrfs_fs_info *fs_info)
366{
367 if (!btrfs_is_zoned(fs_info))
368 return;
369 mutex_lock(&fs_info->zoned_meta_io_lock);
370}
371
372static inline void btrfs_zoned_meta_io_unlock(struct btrfs_fs_info *fs_info)
373{
374 if (!btrfs_is_zoned(fs_info))
375 return;
376 mutex_unlock(&fs_info->zoned_meta_io_lock);
377}
378
379static inline void btrfs_clear_treelog_bg(struct btrfs_block_group *bg)
380{
381 struct btrfs_fs_info *fs_info = bg->fs_info;
382
383 if (!btrfs_is_zoned(fs_info))
384 return;
385
386 spin_lock(&fs_info->treelog_bg_lock);
387 if (fs_info->treelog_bg == bg->start)
388 fs_info->treelog_bg = 0;
389 spin_unlock(&fs_info->treelog_bg_lock);
390}
391
392static inline void btrfs_zoned_data_reloc_lock(struct btrfs_inode *inode)
393{
394 struct btrfs_root *root = inode->root;
395
396 if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
397 mutex_lock(&root->fs_info->zoned_data_reloc_io_lock);
398}
399
400static inline void btrfs_zoned_data_reloc_unlock(struct btrfs_inode *inode)
401{
402 struct btrfs_root *root = inode->root;
403
404 if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
405 mutex_unlock(&root->fs_info->zoned_data_reloc_io_lock);
406}
407
408static inline bool btrfs_zoned_bg_is_full(const struct btrfs_block_group *bg)
409{
410 ASSERT(btrfs_is_zoned(bg->fs_info));
411 return (bg->alloc_offset == bg->zone_capacity);
412}
413
414#endif