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
23 unsigned int max_active_zones;
24 atomic_t active_zones_left;
25 unsigned long *seq_zones;
26 unsigned long *empty_zones;
27 unsigned long *active_zones;
28 struct blk_zone *zone_cache;
29 struct blk_zone sb_zones[2 * BTRFS_SUPER_MIRROR_MAX];
32 #ifdef CONFIG_BLK_DEV_ZONED
33 int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
34 struct blk_zone *zone);
35 int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info);
36 int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache);
37 void btrfs_destroy_dev_zone_info(struct btrfs_device *device);
38 int btrfs_check_zoned_mode(struct btrfs_fs_info *fs_info);
39 int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info);
40 int btrfs_sb_log_location_bdev(struct block_device *bdev, int mirror, int rw,
42 int btrfs_sb_log_location(struct btrfs_device *device, int mirror, int rw,
44 int btrfs_advance_sb_log(struct btrfs_device *device, int mirror);
45 int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror);
46 u64 btrfs_find_allocatable_zones(struct btrfs_device *device, u64 hole_start,
47 u64 hole_end, u64 num_bytes);
48 int btrfs_reset_device_zone(struct btrfs_device *device, u64 physical,
49 u64 length, u64 *bytes);
50 int btrfs_ensure_empty_zones(struct btrfs_device *device, u64 start, u64 size);
51 int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new);
52 void btrfs_calc_zone_unusable(struct btrfs_block_group *cache);
53 void btrfs_redirty_list_add(struct btrfs_transaction *trans,
54 struct extent_buffer *eb);
55 void btrfs_free_redirty_list(struct btrfs_transaction *trans);
56 bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start);
57 void btrfs_record_physical_zoned(struct inode *inode, u64 file_offset,
59 void btrfs_rewrite_logical_zoned(struct btrfs_ordered_extent *ordered);
60 bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
61 struct extent_buffer *eb,
62 struct btrfs_block_group **cache_ret);
63 void btrfs_revert_meta_write_pointer(struct btrfs_block_group *cache,
64 struct extent_buffer *eb);
65 int btrfs_zoned_issue_zeroout(struct btrfs_device *device, u64 physical, u64 length);
66 int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev, u64 logical,
67 u64 physical_start, u64 physical_pos);
68 struct btrfs_device *btrfs_zoned_get_device(struct btrfs_fs_info *fs_info,
69 u64 logical, u64 length);
70 bool btrfs_zone_activate(struct btrfs_block_group *block_group);
71 int btrfs_zone_finish(struct btrfs_block_group *block_group);
72 bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices, u64 flags);
73 void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info, u64 logical,
75 void btrfs_schedule_zone_finish_bg(struct btrfs_block_group *bg,
76 struct extent_buffer *eb);
77 void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg);
78 void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info);
79 bool btrfs_zoned_should_reclaim(struct btrfs_fs_info *fs_info);
80 #else /* CONFIG_BLK_DEV_ZONED */
81 static inline int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
82 struct blk_zone *zone)
87 static inline int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info)
92 static inline int btrfs_get_dev_zone_info(struct btrfs_device *device,
98 static inline void btrfs_destroy_dev_zone_info(struct btrfs_device *device) { }
100 static inline int btrfs_check_zoned_mode(const struct btrfs_fs_info *fs_info)
102 if (!btrfs_is_zoned(fs_info))
105 btrfs_err(fs_info, "zoned block devices support is not enabled");
109 static inline int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info)
114 static inline int btrfs_sb_log_location_bdev(struct block_device *bdev,
115 int mirror, int rw, u64 *bytenr_ret)
117 *bytenr_ret = btrfs_sb_offset(mirror);
121 static inline int btrfs_sb_log_location(struct btrfs_device *device, int mirror,
122 int rw, u64 *bytenr_ret)
124 *bytenr_ret = btrfs_sb_offset(mirror);
128 static inline int btrfs_advance_sb_log(struct btrfs_device *device, int mirror)
133 static inline int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror)
138 static inline u64 btrfs_find_allocatable_zones(struct btrfs_device *device,
139 u64 hole_start, u64 hole_end,
145 static inline int btrfs_reset_device_zone(struct btrfs_device *device,
146 u64 physical, u64 length, u64 *bytes)
152 static inline int btrfs_ensure_empty_zones(struct btrfs_device *device,
158 static inline int btrfs_load_block_group_zone_info(
159 struct btrfs_block_group *cache, bool new)
164 static inline void btrfs_calc_zone_unusable(struct btrfs_block_group *cache) { }
166 static inline void btrfs_redirty_list_add(struct btrfs_transaction *trans,
167 struct extent_buffer *eb) { }
168 static inline void btrfs_free_redirty_list(struct btrfs_transaction *trans) { }
170 static inline bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start)
175 static inline void btrfs_record_physical_zoned(struct inode *inode,
176 u64 file_offset, struct bio *bio)
180 static inline void btrfs_rewrite_logical_zoned(
181 struct btrfs_ordered_extent *ordered) { }
183 static inline bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
184 struct extent_buffer *eb,
185 struct btrfs_block_group **cache_ret)
190 static inline void btrfs_revert_meta_write_pointer(
191 struct btrfs_block_group *cache,
192 struct extent_buffer *eb)
196 static inline int btrfs_zoned_issue_zeroout(struct btrfs_device *device,
197 u64 physical, u64 length)
202 static inline int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev,
203 u64 logical, u64 physical_start,
209 static inline struct btrfs_device *btrfs_zoned_get_device(
210 struct btrfs_fs_info *fs_info,
211 u64 logical, u64 length)
213 return ERR_PTR(-EOPNOTSUPP);
216 static inline bool btrfs_zone_activate(struct btrfs_block_group *block_group)
221 static inline int btrfs_zone_finish(struct btrfs_block_group *block_group)
226 static inline bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices,
232 static inline void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info,
233 u64 logical, u64 length) { }
235 static inline void btrfs_schedule_zone_finish_bg(struct btrfs_block_group *bg,
236 struct extent_buffer *eb) { }
238 static inline void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg) { }
240 static inline void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info) { }
242 static inline bool btrfs_zoned_should_reclaim(struct btrfs_fs_info *fs_info)
248 static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos)
250 struct btrfs_zoned_device_info *zone_info = device->zone_info;
255 return test_bit(pos >> zone_info->zone_size_shift, zone_info->seq_zones);
258 static inline bool btrfs_dev_is_empty_zone(struct btrfs_device *device, u64 pos)
260 struct btrfs_zoned_device_info *zone_info = device->zone_info;
265 return test_bit(pos >> zone_info->zone_size_shift, zone_info->empty_zones);
268 static inline void btrfs_dev_set_empty_zone_bit(struct btrfs_device *device,
271 struct btrfs_zoned_device_info *zone_info = device->zone_info;
277 zno = pos >> zone_info->zone_size_shift;
279 set_bit(zno, zone_info->empty_zones);
281 clear_bit(zno, zone_info->empty_zones);
284 static inline void btrfs_dev_set_zone_empty(struct btrfs_device *device, u64 pos)
286 btrfs_dev_set_empty_zone_bit(device, pos, true);
289 static inline void btrfs_dev_clear_zone_empty(struct btrfs_device *device, u64 pos)
291 btrfs_dev_set_empty_zone_bit(device, pos, false);
294 static inline bool btrfs_check_device_zone_type(const struct btrfs_fs_info *fs_info,
295 struct block_device *bdev)
297 if (btrfs_is_zoned(fs_info)) {
299 * We can allow a regular device on a zoned filesystem, because
300 * we will emulate the zoned capabilities.
302 if (!bdev_is_zoned(bdev))
305 return fs_info->zone_size ==
306 (bdev_zone_sectors(bdev) << SECTOR_SHIFT);
309 /* Do not allow Host Manged zoned device */
310 return bdev_zoned_model(bdev) != BLK_ZONED_HM;
313 static inline bool btrfs_check_super_location(struct btrfs_device *device, u64 pos)
316 * On a non-zoned device, any address is OK. On a zoned device,
317 * non-SEQUENTIAL WRITE REQUIRED zones are capable.
319 return device->zone_info == NULL || !btrfs_dev_is_sequential(device, pos);
322 static inline bool btrfs_can_zone_reset(struct btrfs_device *device,
323 u64 physical, u64 length)
327 if (!btrfs_dev_is_sequential(device, physical))
330 zone_size = device->zone_info->zone_size;
331 if (!IS_ALIGNED(physical, zone_size) || !IS_ALIGNED(length, zone_size))
337 static inline void btrfs_zoned_meta_io_lock(struct btrfs_fs_info *fs_info)
339 if (!btrfs_is_zoned(fs_info))
341 mutex_lock(&fs_info->zoned_meta_io_lock);
344 static inline void btrfs_zoned_meta_io_unlock(struct btrfs_fs_info *fs_info)
346 if (!btrfs_is_zoned(fs_info))
348 mutex_unlock(&fs_info->zoned_meta_io_lock);
351 static inline void btrfs_clear_treelog_bg(struct btrfs_block_group *bg)
353 struct btrfs_fs_info *fs_info = bg->fs_info;
355 if (!btrfs_is_zoned(fs_info))
358 spin_lock(&fs_info->treelog_bg_lock);
359 if (fs_info->treelog_bg == bg->start)
360 fs_info->treelog_bg = 0;
361 spin_unlock(&fs_info->treelog_bg_lock);
364 static inline void btrfs_zoned_data_reloc_lock(struct btrfs_inode *inode)
366 struct btrfs_root *root = inode->root;
368 if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
369 mutex_lock(&root->fs_info->zoned_data_reloc_io_lock);
372 static inline void btrfs_zoned_data_reloc_unlock(struct btrfs_inode *inode)
374 struct btrfs_root *root = inode->root;
376 if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
377 mutex_unlock(&root->fs_info->zoned_data_reloc_io_lock);
380 static inline bool btrfs_zoned_bg_is_full(const struct btrfs_block_group *bg)
382 ASSERT(btrfs_is_zoned(bg->fs_info));
383 return (bg->alloc_offset == bg->zone_capacity);