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
26 u64 max_zone_append_size;
28 unsigned long *seq_zones;
29 unsigned long *empty_zones;
30 struct blk_zone *zone_cache;
31 struct blk_zone sb_zones[2 * BTRFS_SUPER_MIRROR_MAX];
34 #ifdef CONFIG_BLK_DEV_ZONED
35 int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
36 struct blk_zone *zone);
37 int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info);
38 int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache);
39 void btrfs_destroy_dev_zone_info(struct btrfs_device *device);
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 void 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 void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg);
73 void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info);
74 void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info, u64 logical,
76 #else /* CONFIG_BLK_DEV_ZONED */
77 static inline int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
78 struct blk_zone *zone)
83 static inline int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info)
88 static inline int btrfs_get_dev_zone_info(struct btrfs_device *device,
94 static inline void btrfs_destroy_dev_zone_info(struct btrfs_device *device) { }
96 static inline int btrfs_check_zoned_mode(const struct btrfs_fs_info *fs_info)
98 if (!btrfs_is_zoned(fs_info))
101 btrfs_err(fs_info, "zoned block devices support is not enabled");
105 static inline int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info)
110 static inline int btrfs_sb_log_location_bdev(struct block_device *bdev,
111 int mirror, int rw, u64 *bytenr_ret)
113 *bytenr_ret = btrfs_sb_offset(mirror);
117 static inline int btrfs_sb_log_location(struct btrfs_device *device, int mirror,
118 int rw, u64 *bytenr_ret)
120 *bytenr_ret = btrfs_sb_offset(mirror);
124 static inline void btrfs_advance_sb_log(struct btrfs_device *device, int mirror)
127 static inline int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror)
132 static inline u64 btrfs_find_allocatable_zones(struct btrfs_device *device,
133 u64 hole_start, u64 hole_end,
139 static inline int btrfs_reset_device_zone(struct btrfs_device *device,
140 u64 physical, u64 length, u64 *bytes)
146 static inline int btrfs_ensure_empty_zones(struct btrfs_device *device,
152 static inline int btrfs_load_block_group_zone_info(
153 struct btrfs_block_group *cache, bool new)
158 static inline void btrfs_calc_zone_unusable(struct btrfs_block_group *cache) { }
160 static inline void btrfs_redirty_list_add(struct btrfs_transaction *trans,
161 struct extent_buffer *eb) { }
162 static inline void btrfs_free_redirty_list(struct btrfs_transaction *trans) { }
164 static inline bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start)
169 static inline void btrfs_record_physical_zoned(struct inode *inode,
170 u64 file_offset, struct bio *bio)
174 static inline void btrfs_rewrite_logical_zoned(
175 struct btrfs_ordered_extent *ordered) { }
177 static inline bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
178 struct extent_buffer *eb,
179 struct btrfs_block_group **cache_ret)
184 static inline void btrfs_revert_meta_write_pointer(
185 struct btrfs_block_group *cache,
186 struct extent_buffer *eb)
190 static inline int btrfs_zoned_issue_zeroout(struct btrfs_device *device,
191 u64 physical, u64 length)
196 static inline int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev,
197 u64 logical, u64 physical_start,
203 static inline struct btrfs_device *btrfs_zoned_get_device(
204 struct btrfs_fs_info *fs_info,
205 u64 logical, u64 length)
207 return ERR_PTR(-EOPNOTSUPP);
210 static inline void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg) { }
212 static inline void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info) { }
214 static inline void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info,
215 u64 logical, u64 length) { }
218 static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos)
220 struct btrfs_zoned_device_info *zone_info = device->zone_info;
225 return test_bit(pos >> zone_info->zone_size_shift, zone_info->seq_zones);
228 static inline bool btrfs_dev_is_empty_zone(struct btrfs_device *device, u64 pos)
230 struct btrfs_zoned_device_info *zone_info = device->zone_info;
235 return test_bit(pos >> zone_info->zone_size_shift, zone_info->empty_zones);
238 static inline void btrfs_dev_set_empty_zone_bit(struct btrfs_device *device,
241 struct btrfs_zoned_device_info *zone_info = device->zone_info;
247 zno = pos >> zone_info->zone_size_shift;
249 set_bit(zno, zone_info->empty_zones);
251 clear_bit(zno, zone_info->empty_zones);
254 static inline void btrfs_dev_set_zone_empty(struct btrfs_device *device, u64 pos)
256 btrfs_dev_set_empty_zone_bit(device, pos, true);
259 static inline void btrfs_dev_clear_zone_empty(struct btrfs_device *device, u64 pos)
261 btrfs_dev_set_empty_zone_bit(device, pos, false);
264 static inline bool btrfs_check_device_zone_type(const struct btrfs_fs_info *fs_info,
265 struct block_device *bdev)
267 if (btrfs_is_zoned(fs_info)) {
269 * We can allow a regular device on a zoned filesystem, because
270 * we will emulate the zoned capabilities.
272 if (!bdev_is_zoned(bdev))
275 return fs_info->zone_size ==
276 (bdev_zone_sectors(bdev) << SECTOR_SHIFT);
279 /* Do not allow Host Manged zoned device */
280 return bdev_zoned_model(bdev) != BLK_ZONED_HM;
283 static inline bool btrfs_check_super_location(struct btrfs_device *device, u64 pos)
286 * On a non-zoned device, any address is OK. On a zoned device,
287 * non-SEQUENTIAL WRITE REQUIRED zones are capable.
289 return device->zone_info == NULL || !btrfs_dev_is_sequential(device, pos);
292 static inline bool btrfs_can_zone_reset(struct btrfs_device *device,
293 u64 physical, u64 length)
297 if (!btrfs_dev_is_sequential(device, physical))
300 zone_size = device->zone_info->zone_size;
301 if (!IS_ALIGNED(physical, zone_size) || !IS_ALIGNED(length, zone_size))
307 static inline void btrfs_zoned_meta_io_lock(struct btrfs_fs_info *fs_info)
309 if (!btrfs_is_zoned(fs_info))
311 mutex_lock(&fs_info->zoned_meta_io_lock);
314 static inline void btrfs_zoned_meta_io_unlock(struct btrfs_fs_info *fs_info)
316 if (!btrfs_is_zoned(fs_info))
318 mutex_unlock(&fs_info->zoned_meta_io_lock);
321 static inline void btrfs_clear_treelog_bg(struct btrfs_block_group *bg)
323 struct btrfs_fs_info *fs_info = bg->fs_info;
325 if (!btrfs_is_zoned(fs_info))
328 spin_lock(&fs_info->treelog_bg_lock);
329 if (fs_info->treelog_bg == bg->start)
330 fs_info->treelog_bg = 0;
331 spin_unlock(&fs_info->treelog_bg_lock);
334 static inline void btrfs_zoned_data_reloc_lock(struct btrfs_inode *inode)
336 struct btrfs_root *root = inode->root;
338 if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
339 mutex_lock(&root->fs_info->zoned_data_reloc_io_lock);
342 static inline void btrfs_zoned_data_reloc_unlock(struct btrfs_inode *inode)
344 struct btrfs_root *root = inode->root;
346 if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
347 mutex_unlock(&root->fs_info->zoned_data_reloc_io_lock);