1 /* SPDX-License-Identifier: GPL-2.0 */
6 #include <linux/types.h>
7 #include <linux/blkdev.h>
10 #include "block-group.h"
11 #include "btrfs_inode.h"
13 #define BTRFS_DEFAULT_RECLAIM_THRESH (75)
15 struct btrfs_zoned_device_info {
17 * Number of zones, zone size and types of zones if bdev is a
22 u64 max_zone_append_size;
24 unsigned int max_active_zones;
25 atomic_t active_zones_left;
26 unsigned long *seq_zones;
27 unsigned long *empty_zones;
28 unsigned long *active_zones;
29 struct blk_zone *zone_cache;
30 struct blk_zone sb_zones[2 * BTRFS_SUPER_MIRROR_MAX];
33 #ifdef CONFIG_BLK_DEV_ZONED
34 int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
35 struct blk_zone *zone);
36 int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info);
37 int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache);
38 void btrfs_destroy_dev_zone_info(struct btrfs_device *device);
39 int btrfs_check_zoned_mode(struct btrfs_fs_info *fs_info);
40 int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info);
41 int btrfs_sb_log_location_bdev(struct block_device *bdev, int mirror, int rw,
43 int btrfs_sb_log_location(struct btrfs_device *device, int mirror, int rw,
45 int btrfs_advance_sb_log(struct btrfs_device *device, int mirror);
46 int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror);
47 u64 btrfs_find_allocatable_zones(struct btrfs_device *device, u64 hole_start,
48 u64 hole_end, u64 num_bytes);
49 int btrfs_reset_device_zone(struct btrfs_device *device, u64 physical,
50 u64 length, u64 *bytes);
51 int btrfs_ensure_empty_zones(struct btrfs_device *device, u64 start, u64 size);
52 int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new);
53 void btrfs_calc_zone_unusable(struct btrfs_block_group *cache);
54 void btrfs_redirty_list_add(struct btrfs_transaction *trans,
55 struct extent_buffer *eb);
56 void btrfs_free_redirty_list(struct btrfs_transaction *trans);
57 bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start);
58 void btrfs_record_physical_zoned(struct inode *inode, u64 file_offset,
60 void btrfs_rewrite_logical_zoned(struct btrfs_ordered_extent *ordered);
61 bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
62 struct extent_buffer *eb,
63 struct btrfs_block_group **cache_ret);
64 void btrfs_revert_meta_write_pointer(struct btrfs_block_group *cache,
65 struct extent_buffer *eb);
66 int btrfs_zoned_issue_zeroout(struct btrfs_device *device, u64 physical, u64 length);
67 int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev, u64 logical,
68 u64 physical_start, u64 physical_pos);
69 struct btrfs_device *btrfs_zoned_get_device(struct btrfs_fs_info *fs_info,
70 u64 logical, u64 length);
71 bool btrfs_zone_activate(struct btrfs_block_group *block_group);
72 int btrfs_zone_finish(struct btrfs_block_group *block_group);
73 bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices, u64 flags);
74 void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info, u64 logical,
76 void btrfs_schedule_zone_finish_bg(struct btrfs_block_group *bg,
77 struct extent_buffer *eb);
78 void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg);
79 void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info);
80 bool btrfs_zoned_should_reclaim(struct btrfs_fs_info *fs_info);
81 void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info, u64 logical,
83 int btrfs_zone_finish_one_bg(struct btrfs_fs_info *fs_info);
84 int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info,
85 struct btrfs_space_info *space_info, bool do_finish);
86 #else /* CONFIG_BLK_DEV_ZONED */
87 static inline int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
88 struct blk_zone *zone)
93 static inline int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info)
98 static inline int btrfs_get_dev_zone_info(struct btrfs_device *device,
104 static inline void btrfs_destroy_dev_zone_info(struct btrfs_device *device) { }
106 static inline int btrfs_check_zoned_mode(const struct btrfs_fs_info *fs_info)
108 if (!btrfs_is_zoned(fs_info))
111 btrfs_err(fs_info, "zoned block devices support is not enabled");
115 static inline int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info)
120 static inline int btrfs_sb_log_location_bdev(struct block_device *bdev,
121 int mirror, int rw, u64 *bytenr_ret)
123 *bytenr_ret = btrfs_sb_offset(mirror);
127 static inline int btrfs_sb_log_location(struct btrfs_device *device, int mirror,
128 int rw, u64 *bytenr_ret)
130 *bytenr_ret = btrfs_sb_offset(mirror);
134 static inline int btrfs_advance_sb_log(struct btrfs_device *device, int mirror)
139 static inline int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror)
144 static inline u64 btrfs_find_allocatable_zones(struct btrfs_device *device,
145 u64 hole_start, u64 hole_end,
151 static inline int btrfs_reset_device_zone(struct btrfs_device *device,
152 u64 physical, u64 length, u64 *bytes)
158 static inline int btrfs_ensure_empty_zones(struct btrfs_device *device,
164 static inline int btrfs_load_block_group_zone_info(
165 struct btrfs_block_group *cache, bool new)
170 static inline void btrfs_calc_zone_unusable(struct btrfs_block_group *cache) { }
172 static inline void btrfs_redirty_list_add(struct btrfs_transaction *trans,
173 struct extent_buffer *eb) { }
174 static inline void btrfs_free_redirty_list(struct btrfs_transaction *trans) { }
176 static inline bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start)
181 static inline void btrfs_record_physical_zoned(struct inode *inode,
182 u64 file_offset, struct bio *bio)
186 static inline void btrfs_rewrite_logical_zoned(
187 struct btrfs_ordered_extent *ordered) { }
189 static inline bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
190 struct extent_buffer *eb,
191 struct btrfs_block_group **cache_ret)
196 static inline void btrfs_revert_meta_write_pointer(
197 struct btrfs_block_group *cache,
198 struct extent_buffer *eb)
202 static inline int btrfs_zoned_issue_zeroout(struct btrfs_device *device,
203 u64 physical, u64 length)
208 static inline int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev,
209 u64 logical, u64 physical_start,
215 static inline struct btrfs_device *btrfs_zoned_get_device(
216 struct btrfs_fs_info *fs_info,
217 u64 logical, u64 length)
219 return ERR_PTR(-EOPNOTSUPP);
222 static inline bool btrfs_zone_activate(struct btrfs_block_group *block_group)
227 static inline int btrfs_zone_finish(struct btrfs_block_group *block_group)
232 static inline bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices,
238 static inline void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info,
239 u64 logical, u64 length) { }
241 static inline void btrfs_schedule_zone_finish_bg(struct btrfs_block_group *bg,
242 struct extent_buffer *eb) { }
244 static inline void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg) { }
246 static inline void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info) { }
248 static inline bool btrfs_zoned_should_reclaim(struct btrfs_fs_info *fs_info)
253 static inline void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info,
254 u64 logical, u64 length) { }
256 static inline int btrfs_zone_finish_one_bg(struct btrfs_fs_info *fs_info)
261 static inline int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info,
262 struct btrfs_space_info *space_info,
265 /* Consider all the block groups are active */
271 static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos)
273 struct btrfs_zoned_device_info *zone_info = device->zone_info;
278 return test_bit(pos >> zone_info->zone_size_shift, zone_info->seq_zones);
281 static inline bool btrfs_dev_is_empty_zone(struct btrfs_device *device, u64 pos)
283 struct btrfs_zoned_device_info *zone_info = device->zone_info;
288 return test_bit(pos >> zone_info->zone_size_shift, zone_info->empty_zones);
291 static inline void btrfs_dev_set_empty_zone_bit(struct btrfs_device *device,
294 struct btrfs_zoned_device_info *zone_info = device->zone_info;
300 zno = pos >> zone_info->zone_size_shift;
302 set_bit(zno, zone_info->empty_zones);
304 clear_bit(zno, zone_info->empty_zones);
307 static inline void btrfs_dev_set_zone_empty(struct btrfs_device *device, u64 pos)
309 btrfs_dev_set_empty_zone_bit(device, pos, true);
312 static inline void btrfs_dev_clear_zone_empty(struct btrfs_device *device, u64 pos)
314 btrfs_dev_set_empty_zone_bit(device, pos, false);
317 static inline bool btrfs_check_device_zone_type(const struct btrfs_fs_info *fs_info,
318 struct block_device *bdev)
320 if (btrfs_is_zoned(fs_info)) {
322 * We can allow a regular device on a zoned filesystem, because
323 * we will emulate the zoned capabilities.
325 if (!bdev_is_zoned(bdev))
328 return fs_info->zone_size ==
329 (bdev_zone_sectors(bdev) << SECTOR_SHIFT);
332 /* Do not allow Host Manged zoned device */
333 return bdev_zoned_model(bdev) != BLK_ZONED_HM;
336 static inline bool btrfs_check_super_location(struct btrfs_device *device, u64 pos)
339 * On a non-zoned device, any address is OK. On a zoned device,
340 * non-SEQUENTIAL WRITE REQUIRED zones are capable.
342 return device->zone_info == NULL || !btrfs_dev_is_sequential(device, pos);
345 static inline bool btrfs_can_zone_reset(struct btrfs_device *device,
346 u64 physical, u64 length)
350 if (!btrfs_dev_is_sequential(device, physical))
353 zone_size = device->zone_info->zone_size;
354 if (!IS_ALIGNED(physical, zone_size) || !IS_ALIGNED(length, zone_size))
360 static inline void btrfs_zoned_meta_io_lock(struct btrfs_fs_info *fs_info)
362 if (!btrfs_is_zoned(fs_info))
364 mutex_lock(&fs_info->zoned_meta_io_lock);
367 static inline void btrfs_zoned_meta_io_unlock(struct btrfs_fs_info *fs_info)
369 if (!btrfs_is_zoned(fs_info))
371 mutex_unlock(&fs_info->zoned_meta_io_lock);
374 static inline void btrfs_clear_treelog_bg(struct btrfs_block_group *bg)
376 struct btrfs_fs_info *fs_info = bg->fs_info;
378 if (!btrfs_is_zoned(fs_info))
381 spin_lock(&fs_info->treelog_bg_lock);
382 if (fs_info->treelog_bg == bg->start)
383 fs_info->treelog_bg = 0;
384 spin_unlock(&fs_info->treelog_bg_lock);
387 static inline void btrfs_zoned_data_reloc_lock(struct btrfs_inode *inode)
389 struct btrfs_root *root = inode->root;
391 if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
392 mutex_lock(&root->fs_info->zoned_data_reloc_io_lock);
395 static inline void btrfs_zoned_data_reloc_unlock(struct btrfs_inode *inode)
397 struct btrfs_root *root = inode->root;
399 if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
400 mutex_unlock(&root->fs_info->zoned_data_reloc_io_lock);
403 static inline bool btrfs_zoned_bg_is_full(const struct btrfs_block_group *bg)
405 ASSERT(btrfs_is_zoned(bg->fs_info));
406 return (bg->alloc_offset == bg->zone_capacity);