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 struct btrfs_zoned_device_info *btrfs_clone_dev_zone_info(struct btrfs_device *orig_dev);
40 int btrfs_check_zoned_mode(struct btrfs_fs_info *fs_info);
41 int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info);
42 int btrfs_sb_log_location_bdev(struct block_device *bdev, int mirror, int rw,
44 int btrfs_sb_log_location(struct btrfs_device *device, int mirror, int rw,
46 int btrfs_advance_sb_log(struct btrfs_device *device, int mirror);
47 int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror);
48 u64 btrfs_find_allocatable_zones(struct btrfs_device *device, u64 hole_start,
49 u64 hole_end, u64 num_bytes);
50 int btrfs_reset_device_zone(struct btrfs_device *device, u64 physical,
51 u64 length, u64 *bytes);
52 int btrfs_ensure_empty_zones(struct btrfs_device *device, u64 start, u64 size);
53 int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new);
54 void btrfs_calc_zone_unusable(struct btrfs_block_group *cache);
55 void btrfs_redirty_list_add(struct btrfs_transaction *trans,
56 struct extent_buffer *eb);
57 void btrfs_free_redirty_list(struct btrfs_transaction *trans);
58 bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start);
59 void btrfs_record_physical_zoned(struct inode *inode, u64 file_offset,
61 void btrfs_rewrite_logical_zoned(struct btrfs_ordered_extent *ordered);
62 bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
63 struct extent_buffer *eb,
64 struct btrfs_block_group **cache_ret);
65 void btrfs_revert_meta_write_pointer(struct btrfs_block_group *cache,
66 struct extent_buffer *eb);
67 int btrfs_zoned_issue_zeroout(struct btrfs_device *device, u64 physical, u64 length);
68 int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev, u64 logical,
69 u64 physical_start, u64 physical_pos);
70 struct btrfs_device *btrfs_zoned_get_device(struct btrfs_fs_info *fs_info,
71 u64 logical, u64 length);
72 bool btrfs_zone_activate(struct btrfs_block_group *block_group);
73 int btrfs_zone_finish(struct btrfs_block_group *block_group);
74 bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices, u64 flags);
75 void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info, u64 logical,
77 void btrfs_schedule_zone_finish_bg(struct btrfs_block_group *bg,
78 struct extent_buffer *eb);
79 void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg);
80 void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info);
81 bool btrfs_zoned_should_reclaim(struct btrfs_fs_info *fs_info);
82 void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info, u64 logical,
84 int btrfs_zone_finish_one_bg(struct btrfs_fs_info *fs_info);
85 int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info,
86 struct btrfs_space_info *space_info, bool do_finish);
87 #else /* CONFIG_BLK_DEV_ZONED */
88 static inline int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
89 struct blk_zone *zone)
94 static inline int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info)
99 static inline int btrfs_get_dev_zone_info(struct btrfs_device *device,
105 static inline void btrfs_destroy_dev_zone_info(struct btrfs_device *device) { }
108 * In case the kernel is compiled without CONFIG_BLK_DEV_ZONED we'll never call
109 * into btrfs_clone_dev_zone_info() so it's safe to return NULL here.
111 static inline struct btrfs_zoned_device_info *btrfs_clone_dev_zone_info(
112 struct btrfs_device *orig_dev)
117 static inline int btrfs_check_zoned_mode(const struct btrfs_fs_info *fs_info)
119 if (!btrfs_is_zoned(fs_info))
122 btrfs_err(fs_info, "zoned block devices support is not enabled");
126 static inline int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info)
131 static inline int btrfs_sb_log_location_bdev(struct block_device *bdev,
132 int mirror, int rw, u64 *bytenr_ret)
134 *bytenr_ret = btrfs_sb_offset(mirror);
138 static inline int btrfs_sb_log_location(struct btrfs_device *device, int mirror,
139 int rw, u64 *bytenr_ret)
141 *bytenr_ret = btrfs_sb_offset(mirror);
145 static inline int btrfs_advance_sb_log(struct btrfs_device *device, int mirror)
150 static inline int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror)
155 static inline u64 btrfs_find_allocatable_zones(struct btrfs_device *device,
156 u64 hole_start, u64 hole_end,
162 static inline int btrfs_reset_device_zone(struct btrfs_device *device,
163 u64 physical, u64 length, u64 *bytes)
169 static inline int btrfs_ensure_empty_zones(struct btrfs_device *device,
175 static inline int btrfs_load_block_group_zone_info(
176 struct btrfs_block_group *cache, bool new)
181 static inline void btrfs_calc_zone_unusable(struct btrfs_block_group *cache) { }
183 static inline void btrfs_redirty_list_add(struct btrfs_transaction *trans,
184 struct extent_buffer *eb) { }
185 static inline void btrfs_free_redirty_list(struct btrfs_transaction *trans) { }
187 static inline bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start)
192 static inline void btrfs_record_physical_zoned(struct inode *inode,
193 u64 file_offset, struct bio *bio)
197 static inline void btrfs_rewrite_logical_zoned(
198 struct btrfs_ordered_extent *ordered) { }
200 static inline bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
201 struct extent_buffer *eb,
202 struct btrfs_block_group **cache_ret)
207 static inline void btrfs_revert_meta_write_pointer(
208 struct btrfs_block_group *cache,
209 struct extent_buffer *eb)
213 static inline int btrfs_zoned_issue_zeroout(struct btrfs_device *device,
214 u64 physical, u64 length)
219 static inline int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev,
220 u64 logical, u64 physical_start,
226 static inline struct btrfs_device *btrfs_zoned_get_device(
227 struct btrfs_fs_info *fs_info,
228 u64 logical, u64 length)
230 return ERR_PTR(-EOPNOTSUPP);
233 static inline bool btrfs_zone_activate(struct btrfs_block_group *block_group)
238 static inline int btrfs_zone_finish(struct btrfs_block_group *block_group)
243 static inline bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices,
249 static inline void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info,
250 u64 logical, u64 length) { }
252 static inline void btrfs_schedule_zone_finish_bg(struct btrfs_block_group *bg,
253 struct extent_buffer *eb) { }
255 static inline void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg) { }
257 static inline void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info) { }
259 static inline bool btrfs_zoned_should_reclaim(struct btrfs_fs_info *fs_info)
264 static inline void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info,
265 u64 logical, u64 length) { }
267 static inline int btrfs_zone_finish_one_bg(struct btrfs_fs_info *fs_info)
272 static inline int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info,
273 struct btrfs_space_info *space_info,
276 /* Consider all the block groups are active */
282 static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos)
284 struct btrfs_zoned_device_info *zone_info = device->zone_info;
289 return test_bit(pos >> zone_info->zone_size_shift, zone_info->seq_zones);
292 static inline bool btrfs_dev_is_empty_zone(struct btrfs_device *device, u64 pos)
294 struct btrfs_zoned_device_info *zone_info = device->zone_info;
299 return test_bit(pos >> zone_info->zone_size_shift, zone_info->empty_zones);
302 static inline void btrfs_dev_set_empty_zone_bit(struct btrfs_device *device,
305 struct btrfs_zoned_device_info *zone_info = device->zone_info;
311 zno = pos >> zone_info->zone_size_shift;
313 set_bit(zno, zone_info->empty_zones);
315 clear_bit(zno, zone_info->empty_zones);
318 static inline void btrfs_dev_set_zone_empty(struct btrfs_device *device, u64 pos)
320 btrfs_dev_set_empty_zone_bit(device, pos, true);
323 static inline void btrfs_dev_clear_zone_empty(struct btrfs_device *device, u64 pos)
325 btrfs_dev_set_empty_zone_bit(device, pos, false);
328 static inline bool btrfs_check_device_zone_type(const struct btrfs_fs_info *fs_info,
329 struct block_device *bdev)
331 if (btrfs_is_zoned(fs_info)) {
333 * We can allow a regular device on a zoned filesystem, because
334 * we will emulate the zoned capabilities.
336 if (!bdev_is_zoned(bdev))
339 return fs_info->zone_size ==
340 (bdev_zone_sectors(bdev) << SECTOR_SHIFT);
343 /* Do not allow Host Manged zoned device */
344 return bdev_zoned_model(bdev) != BLK_ZONED_HM;
347 static inline bool btrfs_check_super_location(struct btrfs_device *device, u64 pos)
350 * On a non-zoned device, any address is OK. On a zoned device,
351 * non-SEQUENTIAL WRITE REQUIRED zones are capable.
353 return device->zone_info == NULL || !btrfs_dev_is_sequential(device, pos);
356 static inline bool btrfs_can_zone_reset(struct btrfs_device *device,
357 u64 physical, u64 length)
361 if (!btrfs_dev_is_sequential(device, physical))
364 zone_size = device->zone_info->zone_size;
365 if (!IS_ALIGNED(physical, zone_size) || !IS_ALIGNED(length, zone_size))
371 static inline void btrfs_zoned_meta_io_lock(struct btrfs_fs_info *fs_info)
373 if (!btrfs_is_zoned(fs_info))
375 mutex_lock(&fs_info->zoned_meta_io_lock);
378 static inline void btrfs_zoned_meta_io_unlock(struct btrfs_fs_info *fs_info)
380 if (!btrfs_is_zoned(fs_info))
382 mutex_unlock(&fs_info->zoned_meta_io_lock);
385 static inline void btrfs_clear_treelog_bg(struct btrfs_block_group *bg)
387 struct btrfs_fs_info *fs_info = bg->fs_info;
389 if (!btrfs_is_zoned(fs_info))
392 spin_lock(&fs_info->treelog_bg_lock);
393 if (fs_info->treelog_bg == bg->start)
394 fs_info->treelog_bg = 0;
395 spin_unlock(&fs_info->treelog_bg_lock);
398 static inline void btrfs_zoned_data_reloc_lock(struct btrfs_inode *inode)
400 struct btrfs_root *root = inode->root;
402 if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
403 mutex_lock(&root->fs_info->zoned_data_reloc_io_lock);
406 static inline void btrfs_zoned_data_reloc_unlock(struct btrfs_inode *inode)
408 struct btrfs_root *root = inode->root;
410 if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
411 mutex_unlock(&root->fs_info->zoned_data_reloc_io_lock);
414 static inline bool btrfs_zoned_bg_is_full(const struct btrfs_block_group *bg)
416 ASSERT(btrfs_is_zoned(bg->fs_info));
417 return (bg->alloc_offset == bg->zone_capacity);