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"
14 * Block groups with more than this value (percents) of unusable space will be
15 * scheduled for background reclaim.
17 #define BTRFS_DEFAULT_RECLAIM_THRESH 75
19 struct btrfs_zoned_device_info {
21 * Number of zones, zone size and types of zones if bdev is a
27 unsigned int max_active_zones;
28 atomic_t active_zones_left;
29 unsigned long *seq_zones;
30 unsigned long *empty_zones;
31 unsigned long *active_zones;
32 struct blk_zone *zone_cache;
33 struct blk_zone sb_zones[2 * BTRFS_SUPER_MIRROR_MAX];
36 #ifdef CONFIG_BLK_DEV_ZONED
37 int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
38 struct blk_zone *zone);
39 int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info);
40 int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache);
41 void btrfs_destroy_dev_zone_info(struct btrfs_device *device);
42 int btrfs_check_zoned_mode(struct btrfs_fs_info *fs_info);
43 int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info);
44 int btrfs_sb_log_location_bdev(struct block_device *bdev, int mirror, int rw,
46 int btrfs_sb_log_location(struct btrfs_device *device, int mirror, int rw,
48 int btrfs_advance_sb_log(struct btrfs_device *device, int mirror);
49 int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror);
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);
55 int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new);
56 void btrfs_calc_zone_unusable(struct btrfs_block_group *cache);
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);
60 bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start);
61 void btrfs_record_physical_zoned(struct inode *inode, u64 file_offset,
63 void btrfs_rewrite_logical_zoned(struct btrfs_ordered_extent *ordered);
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);
69 int btrfs_zoned_issue_zeroout(struct btrfs_device *device, u64 physical, u64 length);
70 int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev, u64 logical,
71 u64 physical_start, u64 physical_pos);
72 struct btrfs_device *btrfs_zoned_get_device(struct btrfs_fs_info *fs_info,
73 u64 logical, u64 length);
74 bool btrfs_zone_activate(struct btrfs_block_group *block_group);
75 int btrfs_zone_finish(struct btrfs_block_group *block_group);
76 bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices, u64 flags);
77 void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info, u64 logical,
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 #else /* CONFIG_BLK_DEV_ZONED */
82 static inline int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
83 struct blk_zone *zone)
88 static inline int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info)
93 static inline int btrfs_get_dev_zone_info(struct btrfs_device *device,
99 static inline void btrfs_destroy_dev_zone_info(struct btrfs_device *device) { }
101 static inline int btrfs_check_zoned_mode(const struct btrfs_fs_info *fs_info)
103 if (!btrfs_is_zoned(fs_info))
106 btrfs_err(fs_info, "zoned block devices support is not enabled");
110 static inline int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info)
115 static inline int btrfs_sb_log_location_bdev(struct block_device *bdev,
116 int mirror, int rw, u64 *bytenr_ret)
118 *bytenr_ret = btrfs_sb_offset(mirror);
122 static inline int btrfs_sb_log_location(struct btrfs_device *device, int mirror,
123 int rw, u64 *bytenr_ret)
125 *bytenr_ret = btrfs_sb_offset(mirror);
129 static inline int btrfs_advance_sb_log(struct btrfs_device *device, int mirror)
134 static inline int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror)
139 static inline u64 btrfs_find_allocatable_zones(struct btrfs_device *device,
140 u64 hole_start, u64 hole_end,
146 static inline int btrfs_reset_device_zone(struct btrfs_device *device,
147 u64 physical, u64 length, u64 *bytes)
153 static inline int btrfs_ensure_empty_zones(struct btrfs_device *device,
159 static inline int btrfs_load_block_group_zone_info(
160 struct btrfs_block_group *cache, bool new)
165 static inline void btrfs_calc_zone_unusable(struct btrfs_block_group *cache) { }
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) { }
171 static inline bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start)
176 static inline void btrfs_record_physical_zoned(struct inode *inode,
177 u64 file_offset, struct bio *bio)
181 static inline void btrfs_rewrite_logical_zoned(
182 struct btrfs_ordered_extent *ordered) { }
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)
191 static inline void btrfs_revert_meta_write_pointer(
192 struct btrfs_block_group *cache,
193 struct extent_buffer *eb)
197 static inline int btrfs_zoned_issue_zeroout(struct btrfs_device *device,
198 u64 physical, u64 length)
203 static inline int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev,
204 u64 logical, u64 physical_start,
210 static inline struct btrfs_device *btrfs_zoned_get_device(
211 struct btrfs_fs_info *fs_info,
212 u64 logical, u64 length)
214 return ERR_PTR(-EOPNOTSUPP);
217 static inline bool btrfs_zone_activate(struct btrfs_block_group *block_group)
222 static inline int btrfs_zone_finish(struct btrfs_block_group *block_group)
227 static inline bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices,
233 static inline void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info,
234 u64 logical, u64 length) { }
236 static inline void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg) { }
238 static inline void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info) { }
241 static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos)
243 struct btrfs_zoned_device_info *zone_info = device->zone_info;
248 return test_bit(pos >> zone_info->zone_size_shift, zone_info->seq_zones);
251 static inline bool btrfs_dev_is_empty_zone(struct btrfs_device *device, u64 pos)
253 struct btrfs_zoned_device_info *zone_info = device->zone_info;
258 return test_bit(pos >> zone_info->zone_size_shift, zone_info->empty_zones);
261 static inline void btrfs_dev_set_empty_zone_bit(struct btrfs_device *device,
264 struct btrfs_zoned_device_info *zone_info = device->zone_info;
270 zno = pos >> zone_info->zone_size_shift;
272 set_bit(zno, zone_info->empty_zones);
274 clear_bit(zno, zone_info->empty_zones);
277 static inline void btrfs_dev_set_zone_empty(struct btrfs_device *device, u64 pos)
279 btrfs_dev_set_empty_zone_bit(device, pos, true);
282 static inline void btrfs_dev_clear_zone_empty(struct btrfs_device *device, u64 pos)
284 btrfs_dev_set_empty_zone_bit(device, pos, false);
287 static inline bool btrfs_check_device_zone_type(const struct btrfs_fs_info *fs_info,
288 struct block_device *bdev)
290 if (btrfs_is_zoned(fs_info)) {
292 * We can allow a regular device on a zoned filesystem, because
293 * we will emulate the zoned capabilities.
295 if (!bdev_is_zoned(bdev))
298 return fs_info->zone_size ==
299 (bdev_zone_sectors(bdev) << SECTOR_SHIFT);
302 /* Do not allow Host Manged zoned device */
303 return bdev_zoned_model(bdev) != BLK_ZONED_HM;
306 static inline bool btrfs_check_super_location(struct btrfs_device *device, u64 pos)
309 * On a non-zoned device, any address is OK. On a zoned device,
310 * non-SEQUENTIAL WRITE REQUIRED zones are capable.
312 return device->zone_info == NULL || !btrfs_dev_is_sequential(device, pos);
315 static inline bool btrfs_can_zone_reset(struct btrfs_device *device,
316 u64 physical, u64 length)
320 if (!btrfs_dev_is_sequential(device, physical))
323 zone_size = device->zone_info->zone_size;
324 if (!IS_ALIGNED(physical, zone_size) || !IS_ALIGNED(length, zone_size))
330 static inline void btrfs_zoned_meta_io_lock(struct btrfs_fs_info *fs_info)
332 if (!btrfs_is_zoned(fs_info))
334 mutex_lock(&fs_info->zoned_meta_io_lock);
337 static inline void btrfs_zoned_meta_io_unlock(struct btrfs_fs_info *fs_info)
339 if (!btrfs_is_zoned(fs_info))
341 mutex_unlock(&fs_info->zoned_meta_io_lock);
344 static inline void btrfs_clear_treelog_bg(struct btrfs_block_group *bg)
346 struct btrfs_fs_info *fs_info = bg->fs_info;
348 if (!btrfs_is_zoned(fs_info))
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);
357 static inline void btrfs_zoned_data_reloc_lock(struct btrfs_inode *inode)
359 struct btrfs_root *root = inode->root;
361 if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
362 btrfs_inode_lock(&inode->vfs_inode, 0);
365 static inline void btrfs_zoned_data_reloc_unlock(struct btrfs_inode *inode)
367 struct btrfs_root *root = inode->root;
369 if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
370 btrfs_inode_unlock(&inode->vfs_inode, 0);