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
26 unsigned long *seq_zones;
27 unsigned long *empty_zones;
28 struct blk_zone sb_zones[2 * BTRFS_SUPER_MIRROR_MAX];
31 #ifdef CONFIG_BLK_DEV_ZONED
32 int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
33 struct blk_zone *zone);
34 int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info);
35 int btrfs_get_dev_zone_info(struct btrfs_device *device);
36 void btrfs_destroy_dev_zone_info(struct btrfs_device *device);
37 int btrfs_check_zoned_mode(struct btrfs_fs_info *fs_info);
38 int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info);
39 int btrfs_sb_log_location_bdev(struct block_device *bdev, int mirror, int rw,
41 int btrfs_sb_log_location(struct btrfs_device *device, int mirror, int rw,
43 void btrfs_advance_sb_log(struct btrfs_device *device, int mirror);
44 int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror);
45 u64 btrfs_find_allocatable_zones(struct btrfs_device *device, u64 hole_start,
46 u64 hole_end, u64 num_bytes);
47 int btrfs_reset_device_zone(struct btrfs_device *device, u64 physical,
48 u64 length, u64 *bytes);
49 int btrfs_ensure_empty_zones(struct btrfs_device *device, u64 start, u64 size);
50 int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new);
51 void btrfs_calc_zone_unusable(struct btrfs_block_group *cache);
52 void btrfs_redirty_list_add(struct btrfs_transaction *trans,
53 struct extent_buffer *eb);
54 void btrfs_free_redirty_list(struct btrfs_transaction *trans);
55 bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start);
56 void btrfs_record_physical_zoned(struct inode *inode, u64 file_offset,
58 void btrfs_rewrite_logical_zoned(struct btrfs_ordered_extent *ordered);
59 bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
60 struct extent_buffer *eb,
61 struct btrfs_block_group **cache_ret);
62 void btrfs_revert_meta_write_pointer(struct btrfs_block_group *cache,
63 struct extent_buffer *eb);
64 int btrfs_zoned_issue_zeroout(struct btrfs_device *device, u64 physical, u64 length);
65 int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev, u64 logical,
66 u64 physical_start, u64 physical_pos);
67 struct btrfs_device *btrfs_zoned_get_device(struct btrfs_fs_info *fs_info,
68 u64 logical, u64 length);
69 #else /* CONFIG_BLK_DEV_ZONED */
70 static inline int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
71 struct blk_zone *zone)
76 static inline int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info)
81 static inline int btrfs_get_dev_zone_info(struct btrfs_device *device)
86 static inline void btrfs_destroy_dev_zone_info(struct btrfs_device *device) { }
88 static inline int btrfs_check_zoned_mode(const struct btrfs_fs_info *fs_info)
90 if (!btrfs_is_zoned(fs_info))
93 btrfs_err(fs_info, "zoned block devices support is not enabled");
97 static inline int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info)
102 static inline int btrfs_sb_log_location_bdev(struct block_device *bdev,
103 int mirror, int rw, u64 *bytenr_ret)
105 *bytenr_ret = btrfs_sb_offset(mirror);
109 static inline int btrfs_sb_log_location(struct btrfs_device *device, int mirror,
110 int rw, u64 *bytenr_ret)
112 *bytenr_ret = btrfs_sb_offset(mirror);
116 static inline void btrfs_advance_sb_log(struct btrfs_device *device, int mirror)
119 static inline int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror)
124 static inline u64 btrfs_find_allocatable_zones(struct btrfs_device *device,
125 u64 hole_start, u64 hole_end,
131 static inline int btrfs_reset_device_zone(struct btrfs_device *device,
132 u64 physical, u64 length, u64 *bytes)
138 static inline int btrfs_ensure_empty_zones(struct btrfs_device *device,
144 static inline int btrfs_load_block_group_zone_info(
145 struct btrfs_block_group *cache, bool new)
150 static inline void btrfs_calc_zone_unusable(struct btrfs_block_group *cache) { }
152 static inline void btrfs_redirty_list_add(struct btrfs_transaction *trans,
153 struct extent_buffer *eb) { }
154 static inline void btrfs_free_redirty_list(struct btrfs_transaction *trans) { }
156 static inline bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start)
161 static inline void btrfs_record_physical_zoned(struct inode *inode,
162 u64 file_offset, struct bio *bio)
166 static inline void btrfs_rewrite_logical_zoned(
167 struct btrfs_ordered_extent *ordered) { }
169 static inline bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
170 struct extent_buffer *eb,
171 struct btrfs_block_group **cache_ret)
176 static inline void btrfs_revert_meta_write_pointer(
177 struct btrfs_block_group *cache,
178 struct extent_buffer *eb)
182 static inline int btrfs_zoned_issue_zeroout(struct btrfs_device *device,
183 u64 physical, u64 length)
188 static inline int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev,
189 u64 logical, u64 physical_start,
195 static inline struct btrfs_device *btrfs_zoned_get_device(
196 struct btrfs_fs_info *fs_info,
197 u64 logical, u64 length)
199 return ERR_PTR(-EOPNOTSUPP);
204 static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos)
206 struct btrfs_zoned_device_info *zone_info = device->zone_info;
211 return test_bit(pos >> zone_info->zone_size_shift, zone_info->seq_zones);
214 static inline bool btrfs_dev_is_empty_zone(struct btrfs_device *device, u64 pos)
216 struct btrfs_zoned_device_info *zone_info = device->zone_info;
221 return test_bit(pos >> zone_info->zone_size_shift, zone_info->empty_zones);
224 static inline void btrfs_dev_set_empty_zone_bit(struct btrfs_device *device,
227 struct btrfs_zoned_device_info *zone_info = device->zone_info;
233 zno = pos >> zone_info->zone_size_shift;
235 set_bit(zno, zone_info->empty_zones);
237 clear_bit(zno, zone_info->empty_zones);
240 static inline void btrfs_dev_set_zone_empty(struct btrfs_device *device, u64 pos)
242 btrfs_dev_set_empty_zone_bit(device, pos, true);
245 static inline void btrfs_dev_clear_zone_empty(struct btrfs_device *device, u64 pos)
247 btrfs_dev_set_empty_zone_bit(device, pos, false);
250 static inline bool btrfs_check_device_zone_type(const struct btrfs_fs_info *fs_info,
251 struct block_device *bdev)
253 if (btrfs_is_zoned(fs_info)) {
255 * We can allow a regular device on a zoned filesystem, because
256 * we will emulate the zoned capabilities.
258 if (!bdev_is_zoned(bdev))
261 return fs_info->zone_size ==
262 (bdev_zone_sectors(bdev) << SECTOR_SHIFT);
265 /* Do not allow Host Manged zoned device */
266 return bdev_zoned_model(bdev) != BLK_ZONED_HM;
269 static inline bool btrfs_check_super_location(struct btrfs_device *device, u64 pos)
272 * On a non-zoned device, any address is OK. On a zoned device,
273 * non-SEQUENTIAL WRITE REQUIRED zones are capable.
275 return device->zone_info == NULL || !btrfs_dev_is_sequential(device, pos);
278 static inline bool btrfs_can_zone_reset(struct btrfs_device *device,
279 u64 physical, u64 length)
283 if (!btrfs_dev_is_sequential(device, physical))
286 zone_size = device->zone_info->zone_size;
287 if (!IS_ALIGNED(physical, zone_size) || !IS_ALIGNED(length, zone_size))
293 static inline void btrfs_zoned_meta_io_lock(struct btrfs_fs_info *fs_info)
295 if (!btrfs_is_zoned(fs_info))
297 mutex_lock(&fs_info->zoned_meta_io_lock);
300 static inline void btrfs_zoned_meta_io_unlock(struct btrfs_fs_info *fs_info)
302 if (!btrfs_is_zoned(fs_info))
304 mutex_unlock(&fs_info->zoned_meta_io_lock);
307 static inline void btrfs_clear_treelog_bg(struct btrfs_block_group *bg)
309 struct btrfs_fs_info *fs_info = bg->fs_info;
311 if (!btrfs_is_zoned(fs_info))
314 spin_lock(&fs_info->treelog_bg_lock);
315 if (fs_info->treelog_bg == bg->start)
316 fs_info->treelog_bg = 0;
317 spin_unlock(&fs_info->treelog_bg_lock);