1 /* SPDX-License-Identifier: GPL-2.0 */
6 #include <linux/types.h>
7 #include <linux/blkdev.h>
11 #include "block-group.h"
12 #include "btrfs_inode.h"
14 #define BTRFS_DEFAULT_RECLAIM_THRESH (75)
16 struct btrfs_zoned_device_info {
18 * Number of zones, zone size and types of zones if bdev is a
24 unsigned int max_active_zones;
26 * Reserved active zones for one metadata and one system block group.
27 * It can vary per-device depending on the allocation status.
29 int reserved_active_zones;
30 atomic_t active_zones_left;
31 unsigned long *seq_zones;
32 unsigned long *empty_zones;
33 unsigned long *active_zones;
34 struct blk_zone *zone_cache;
35 struct blk_zone sb_zones[2 * BTRFS_SUPER_MIRROR_MAX];
38 void btrfs_finish_ordered_zoned(struct btrfs_ordered_extent *ordered);
40 #ifdef CONFIG_BLK_DEV_ZONED
41 int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
42 struct blk_zone *zone);
43 int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info);
44 int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache);
45 void btrfs_destroy_dev_zone_info(struct btrfs_device *device);
46 struct btrfs_zoned_device_info *btrfs_clone_dev_zone_info(struct btrfs_device *orig_dev);
47 int btrfs_check_zoned_mode(struct btrfs_fs_info *fs_info);
48 int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info);
49 int btrfs_sb_log_location_bdev(struct block_device *bdev, int mirror, int rw,
51 int btrfs_sb_log_location(struct btrfs_device *device, int mirror, int rw,
53 int btrfs_advance_sb_log(struct btrfs_device *device, int mirror);
54 int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror);
55 u64 btrfs_find_allocatable_zones(struct btrfs_device *device, u64 hole_start,
56 u64 hole_end, u64 num_bytes);
57 int btrfs_reset_device_zone(struct btrfs_device *device, u64 physical,
58 u64 length, u64 *bytes);
59 int btrfs_ensure_empty_zones(struct btrfs_device *device, u64 start, u64 size);
60 int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new);
61 void btrfs_calc_zone_unusable(struct btrfs_block_group *cache);
62 void btrfs_redirty_list_add(struct btrfs_transaction *trans,
63 struct extent_buffer *eb);
64 bool btrfs_use_zone_append(struct btrfs_bio *bbio);
65 void btrfs_record_physical_zoned(struct btrfs_bio *bbio);
66 int btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
67 struct btrfs_eb_write_context *ctx);
68 int btrfs_zoned_issue_zeroout(struct btrfs_device *device, u64 physical, u64 length);
69 int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev, u64 logical,
70 u64 physical_start, u64 physical_pos);
71 bool btrfs_zone_activate(struct btrfs_block_group *block_group);
72 int btrfs_zone_finish(struct btrfs_block_group *block_group);
73 bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices, u64 flags);
74 void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info, u64 logical,
76 void btrfs_schedule_zone_finish_bg(struct btrfs_block_group *bg,
77 struct extent_buffer *eb);
78 void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg);
79 void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info);
80 bool btrfs_zoned_should_reclaim(struct btrfs_fs_info *fs_info);
81 void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info, u64 logical,
83 int btrfs_zone_finish_one_bg(struct btrfs_fs_info *fs_info);
84 int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info,
85 struct btrfs_space_info *space_info, bool do_finish);
86 void btrfs_check_active_zone_reservation(struct btrfs_fs_info *fs_info);
87 #else /* CONFIG_BLK_DEV_ZONED */
88 static inline int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
89 struct blk_zone *zone)
94 static inline int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info)
99 static inline int btrfs_get_dev_zone_info(struct btrfs_device *device,
105 static inline void btrfs_destroy_dev_zone_info(struct btrfs_device *device) { }
108 * In case the kernel is compiled without CONFIG_BLK_DEV_ZONED we'll never call
109 * into btrfs_clone_dev_zone_info() so it's safe to return NULL here.
111 static inline struct btrfs_zoned_device_info *btrfs_clone_dev_zone_info(
112 struct btrfs_device *orig_dev)
117 static inline int btrfs_check_zoned_mode(const struct btrfs_fs_info *fs_info)
119 if (!btrfs_is_zoned(fs_info))
122 btrfs_err(fs_info, "zoned block devices support is not enabled");
126 static inline int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info)
131 static inline int btrfs_sb_log_location_bdev(struct block_device *bdev,
132 int mirror, int rw, u64 *bytenr_ret)
134 *bytenr_ret = btrfs_sb_offset(mirror);
138 static inline int btrfs_sb_log_location(struct btrfs_device *device, int mirror,
139 int rw, u64 *bytenr_ret)
141 *bytenr_ret = btrfs_sb_offset(mirror);
145 static inline int btrfs_advance_sb_log(struct btrfs_device *device, int mirror)
150 static inline int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror)
155 static inline u64 btrfs_find_allocatable_zones(struct btrfs_device *device,
156 u64 hole_start, u64 hole_end,
162 static inline int btrfs_reset_device_zone(struct btrfs_device *device,
163 u64 physical, u64 length, u64 *bytes)
169 static inline int btrfs_ensure_empty_zones(struct btrfs_device *device,
175 static inline int btrfs_load_block_group_zone_info(
176 struct btrfs_block_group *cache, bool new)
181 static inline void btrfs_calc_zone_unusable(struct btrfs_block_group *cache) { }
183 static inline void btrfs_redirty_list_add(struct btrfs_transaction *trans,
184 struct extent_buffer *eb) { }
186 static inline bool btrfs_use_zone_append(struct btrfs_bio *bbio)
191 static inline void btrfs_record_physical_zoned(struct btrfs_bio *bbio)
195 static inline int btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
196 struct btrfs_eb_write_context *ctx)
201 static inline int btrfs_zoned_issue_zeroout(struct btrfs_device *device,
202 u64 physical, u64 length)
207 static inline int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev,
208 u64 logical, u64 physical_start,
214 static inline bool btrfs_zone_activate(struct btrfs_block_group *block_group)
219 static inline int btrfs_zone_finish(struct btrfs_block_group *block_group)
224 static inline bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices,
230 static inline void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info,
231 u64 logical, u64 length) { }
233 static inline void btrfs_schedule_zone_finish_bg(struct btrfs_block_group *bg,
234 struct extent_buffer *eb) { }
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) { }
240 static inline bool btrfs_zoned_should_reclaim(struct btrfs_fs_info *fs_info)
245 static inline void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info,
246 u64 logical, u64 length) { }
248 static inline int btrfs_zone_finish_one_bg(struct btrfs_fs_info *fs_info)
253 static inline int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info,
254 struct btrfs_space_info *space_info,
257 /* Consider all the block groups are active */
261 static inline void btrfs_check_active_zone_reservation(struct btrfs_fs_info *fs_info) { }
265 static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos)
267 struct btrfs_zoned_device_info *zone_info = device->zone_info;
272 return test_bit(pos >> zone_info->zone_size_shift, zone_info->seq_zones);
275 static inline bool btrfs_dev_is_empty_zone(struct btrfs_device *device, u64 pos)
277 struct btrfs_zoned_device_info *zone_info = device->zone_info;
282 return test_bit(pos >> zone_info->zone_size_shift, zone_info->empty_zones);
285 static inline void btrfs_dev_set_empty_zone_bit(struct btrfs_device *device,
288 struct btrfs_zoned_device_info *zone_info = device->zone_info;
294 zno = pos >> zone_info->zone_size_shift;
296 set_bit(zno, zone_info->empty_zones);
298 clear_bit(zno, zone_info->empty_zones);
301 static inline void btrfs_dev_set_zone_empty(struct btrfs_device *device, u64 pos)
303 btrfs_dev_set_empty_zone_bit(device, pos, true);
306 static inline void btrfs_dev_clear_zone_empty(struct btrfs_device *device, u64 pos)
308 btrfs_dev_set_empty_zone_bit(device, pos, false);
311 static inline bool btrfs_check_device_zone_type(const struct btrfs_fs_info *fs_info,
312 struct block_device *bdev)
314 if (btrfs_is_zoned(fs_info)) {
316 * We can allow a regular device on a zoned filesystem, because
317 * we will emulate the zoned capabilities.
319 if (!bdev_is_zoned(bdev))
322 return fs_info->zone_size ==
323 (bdev_zone_sectors(bdev) << SECTOR_SHIFT);
326 /* Do not allow Host Manged zoned device */
327 return bdev_zoned_model(bdev) != BLK_ZONED_HM;
330 static inline bool btrfs_check_super_location(struct btrfs_device *device, u64 pos)
333 * On a non-zoned device, any address is OK. On a zoned device,
334 * non-SEQUENTIAL WRITE REQUIRED zones are capable.
336 return device->zone_info == NULL || !btrfs_dev_is_sequential(device, pos);
339 static inline bool btrfs_can_zone_reset(struct btrfs_device *device,
340 u64 physical, u64 length)
344 if (!btrfs_dev_is_sequential(device, physical))
347 zone_size = device->zone_info->zone_size;
348 if (!IS_ALIGNED(physical, zone_size) || !IS_ALIGNED(length, zone_size))
354 static inline void btrfs_zoned_meta_io_lock(struct btrfs_fs_info *fs_info)
356 if (!btrfs_is_zoned(fs_info))
358 mutex_lock(&fs_info->zoned_meta_io_lock);
361 static inline void btrfs_zoned_meta_io_unlock(struct btrfs_fs_info *fs_info)
363 if (!btrfs_is_zoned(fs_info))
365 mutex_unlock(&fs_info->zoned_meta_io_lock);
368 static inline void btrfs_clear_treelog_bg(struct btrfs_block_group *bg)
370 struct btrfs_fs_info *fs_info = bg->fs_info;
372 if (!btrfs_is_zoned(fs_info))
375 spin_lock(&fs_info->treelog_bg_lock);
376 if (fs_info->treelog_bg == bg->start)
377 fs_info->treelog_bg = 0;
378 spin_unlock(&fs_info->treelog_bg_lock);
381 static inline void btrfs_zoned_data_reloc_lock(struct btrfs_inode *inode)
383 struct btrfs_root *root = inode->root;
385 if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
386 mutex_lock(&root->fs_info->zoned_data_reloc_io_lock);
389 static inline void btrfs_zoned_data_reloc_unlock(struct btrfs_inode *inode)
391 struct btrfs_root *root = inode->root;
393 if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
394 mutex_unlock(&root->fs_info->zoned_data_reloc_io_lock);
397 static inline bool btrfs_zoned_bg_is_full(const struct btrfs_block_group *bg)
399 ASSERT(btrfs_is_zoned(bg->fs_info));
400 return (bg->alloc_offset == bg->zone_capacity);