1 /* SPDX-License-Identifier: GPL-2.0 */
6 #include <linux/types.h>
7 #include <linux/blkdev.h>
10 #include "block-group.h"
13 * Block groups with more than this value (percents) of unusable space will be
14 * scheduled for background reclaim.
16 #define BTRFS_DEFAULT_RECLAIM_THRESH 75
18 struct btrfs_zoned_device_info {
20 * Number of zones, zone size and types of zones if bdev is a
25 u64 max_zone_append_size;
27 unsigned long *seq_zones;
28 unsigned long *empty_zones;
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);
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 void 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 #else /* CONFIG_BLK_DEV_ZONED */
69 static inline int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
70 struct blk_zone *zone)
75 static inline int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info)
80 static inline int btrfs_get_dev_zone_info(struct btrfs_device *device)
85 static inline void btrfs_destroy_dev_zone_info(struct btrfs_device *device) { }
87 static inline int btrfs_check_zoned_mode(const struct btrfs_fs_info *fs_info)
89 if (!btrfs_is_zoned(fs_info))
92 btrfs_err(fs_info, "zoned block devices support is not enabled");
96 static inline int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info)
101 static inline int btrfs_sb_log_location_bdev(struct block_device *bdev,
102 int mirror, int rw, u64 *bytenr_ret)
104 *bytenr_ret = btrfs_sb_offset(mirror);
108 static inline int btrfs_sb_log_location(struct btrfs_device *device, int mirror,
109 int rw, u64 *bytenr_ret)
111 *bytenr_ret = btrfs_sb_offset(mirror);
115 static inline void btrfs_advance_sb_log(struct btrfs_device *device, int mirror)
118 static inline int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror)
123 static inline u64 btrfs_find_allocatable_zones(struct btrfs_device *device,
124 u64 hole_start, u64 hole_end,
130 static inline int btrfs_reset_device_zone(struct btrfs_device *device,
131 u64 physical, u64 length, u64 *bytes)
137 static inline int btrfs_ensure_empty_zones(struct btrfs_device *device,
143 static inline int btrfs_load_block_group_zone_info(
144 struct btrfs_block_group *cache, bool new)
149 static inline void btrfs_calc_zone_unusable(struct btrfs_block_group *cache) { }
151 static inline void btrfs_redirty_list_add(struct btrfs_transaction *trans,
152 struct extent_buffer *eb) { }
153 static inline void btrfs_free_redirty_list(struct btrfs_transaction *trans) { }
155 static inline bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start)
160 static inline void btrfs_record_physical_zoned(struct inode *inode,
161 u64 file_offset, struct bio *bio)
165 static inline void btrfs_rewrite_logical_zoned(
166 struct btrfs_ordered_extent *ordered) { }
168 static inline bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
169 struct extent_buffer *eb,
170 struct btrfs_block_group **cache_ret)
175 static inline void btrfs_revert_meta_write_pointer(
176 struct btrfs_block_group *cache,
177 struct extent_buffer *eb)
181 static inline int btrfs_zoned_issue_zeroout(struct btrfs_device *device,
182 u64 physical, u64 length)
187 static inline int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev,
188 u64 logical, u64 physical_start,
196 static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos)
198 struct btrfs_zoned_device_info *zone_info = device->zone_info;
203 return test_bit(pos >> zone_info->zone_size_shift, zone_info->seq_zones);
206 static inline bool btrfs_dev_is_empty_zone(struct btrfs_device *device, u64 pos)
208 struct btrfs_zoned_device_info *zone_info = device->zone_info;
213 return test_bit(pos >> zone_info->zone_size_shift, zone_info->empty_zones);
216 static inline void btrfs_dev_set_empty_zone_bit(struct btrfs_device *device,
219 struct btrfs_zoned_device_info *zone_info = device->zone_info;
225 zno = pos >> zone_info->zone_size_shift;
227 set_bit(zno, zone_info->empty_zones);
229 clear_bit(zno, zone_info->empty_zones);
232 static inline void btrfs_dev_set_zone_empty(struct btrfs_device *device, u64 pos)
234 btrfs_dev_set_empty_zone_bit(device, pos, true);
237 static inline void btrfs_dev_clear_zone_empty(struct btrfs_device *device, u64 pos)
239 btrfs_dev_set_empty_zone_bit(device, pos, false);
242 static inline bool btrfs_check_device_zone_type(const struct btrfs_fs_info *fs_info,
243 struct block_device *bdev)
245 if (btrfs_is_zoned(fs_info)) {
247 * We can allow a regular device on a zoned filesystem, because
248 * we will emulate the zoned capabilities.
250 if (!bdev_is_zoned(bdev))
253 return fs_info->zone_size ==
254 (bdev_zone_sectors(bdev) << SECTOR_SHIFT);
257 /* Do not allow Host Manged zoned device */
258 return bdev_zoned_model(bdev) != BLK_ZONED_HM;
261 static inline bool btrfs_check_super_location(struct btrfs_device *device, u64 pos)
264 * On a non-zoned device, any address is OK. On a zoned device,
265 * non-SEQUENTIAL WRITE REQUIRED zones are capable.
267 return device->zone_info == NULL || !btrfs_dev_is_sequential(device, pos);
270 static inline bool btrfs_can_zone_reset(struct btrfs_device *device,
271 u64 physical, u64 length)
275 if (!btrfs_dev_is_sequential(device, physical))
278 zone_size = device->zone_info->zone_size;
279 if (!IS_ALIGNED(physical, zone_size) || !IS_ALIGNED(length, zone_size))
285 static inline void btrfs_zoned_meta_io_lock(struct btrfs_fs_info *fs_info)
287 if (!btrfs_is_zoned(fs_info))
289 mutex_lock(&fs_info->zoned_meta_io_lock);
292 static inline void btrfs_zoned_meta_io_unlock(struct btrfs_fs_info *fs_info)
294 if (!btrfs_is_zoned(fs_info))
296 mutex_unlock(&fs_info->zoned_meta_io_lock);
299 static inline void btrfs_clear_treelog_bg(struct btrfs_block_group *bg)
301 struct btrfs_fs_info *fs_info = bg->fs_info;
303 if (!btrfs_is_zoned(fs_info))
306 spin_lock(&fs_info->treelog_bg_lock);
307 if (fs_info->treelog_bg == bg->start)
308 fs_info->treelog_bg = 0;
309 spin_unlock(&fs_info->treelog_bg_lock);