[linux-block.git] / fs / btrfs / zoned.h

/* SPDX-License-Identifier: GPL-2.0 */

#ifndef BTRFS_ZONED_H
#define BTRFS_ZONED_H

#include <linux/types.h>
#include <linux/blkdev.h>
#include "volumes.h"
#include "disk-io.h"
#include "block-group.h"
#include "btrfs_inode.h"

/*
 * Block groups with more than this value (percents) of unusable space will be
 * scheduled for background reclaim.
 */
#define BTRFS_DEFAULT_RECLAIM_THRESH		75

struct btrfs_zoned_device_info {
	/*
	 * Number of zones, zone size and types of zones if bdev is a
	 * zoned block device.
	 */
	u64 zone_size;
	u8  zone_size_shift;
	u32 nr_zones;
	unsigned int max_active_zones;
	atomic_t active_zones_left;
	unsigned long *seq_zones;
	unsigned long *empty_zones;
	unsigned long *active_zones;
	struct blk_zone *zone_cache;
	struct blk_zone sb_zones[2 * BTRFS_SUPER_MIRROR_MAX];
};

#ifdef CONFIG_BLK_DEV_ZONED
int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
		       struct blk_zone *zone);
int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info);
int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache);
void btrfs_destroy_dev_zone_info(struct btrfs_device *device);
int btrfs_check_zoned_mode(struct btrfs_fs_info *fs_info);
int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info);
int btrfs_sb_log_location_bdev(struct block_device *bdev, int mirror, int rw,
			       u64 *bytenr_ret);
int btrfs_sb_log_location(struct btrfs_device *device, int mirror, int rw,
			  u64 *bytenr_ret);
int btrfs_advance_sb_log(struct btrfs_device *device, int mirror);
int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror);
u64 btrfs_find_allocatable_zones(struct btrfs_device *device, u64 hole_start,
				 u64 hole_end, u64 num_bytes);
int btrfs_reset_device_zone(struct btrfs_device *device, u64 physical,
			    u64 length, u64 *bytes);
int btrfs_ensure_empty_zones(struct btrfs_device *device, u64 start, u64 size);
int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new);
void btrfs_calc_zone_unusable(struct btrfs_block_group *cache);
void btrfs_redirty_list_add(struct btrfs_transaction *trans,
			    struct extent_buffer *eb);
void btrfs_free_redirty_list(struct btrfs_transaction *trans);
bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start);
void btrfs_record_physical_zoned(struct inode *inode, u64 file_offset,
				 struct bio *bio);
void btrfs_rewrite_logical_zoned(struct btrfs_ordered_extent *ordered);
bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
				    struct extent_buffer *eb,
				    struct btrfs_block_group **cache_ret);
void btrfs_revert_meta_write_pointer(struct btrfs_block_group *cache,
				     struct extent_buffer *eb);
int btrfs_zoned_issue_zeroout(struct btrfs_device *device, u64 physical, u64 length);
int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev, u64 logical,
				  u64 physical_start, u64 physical_pos);
struct btrfs_device *btrfs_zoned_get_device(struct btrfs_fs_info *fs_info,
					    u64 logical, u64 length);
bool btrfs_zone_activate(struct btrfs_block_group *block_group);
int btrfs_zone_finish(struct btrfs_block_group *block_group);
bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices, u64 flags);
void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info, u64 logical,
			     u64 length);
void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg);
void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info);
#else /* CONFIG_BLK_DEV_ZONED */
static inline int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
				     struct blk_zone *zone)
{
	return 0;
}

static inline int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info)
{
	return 0;
}

static inline int btrfs_get_dev_zone_info(struct btrfs_device *device,
					  bool populate_cache)
{
	return 0;
}

static inline void btrfs_destroy_dev_zone_info(struct btrfs_device *device) { }

static inline int btrfs_check_zoned_mode(const struct btrfs_fs_info *fs_info)
{
	if (!btrfs_is_zoned(fs_info))
		return 0;

	btrfs_err(fs_info, "zoned block devices support is not enabled");
	return -EOPNOTSUPP;
}

static inline int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info)
{
	return 0;
}

static inline int btrfs_sb_log_location_bdev(struct block_device *bdev,
					     int mirror, int rw, u64 *bytenr_ret)
{
	*bytenr_ret = btrfs_sb_offset(mirror);
	return 0;
}

static inline int btrfs_sb_log_location(struct btrfs_device *device, int mirror,
					int rw, u64 *bytenr_ret)
{
	*bytenr_ret = btrfs_sb_offset(mirror);
	return 0;
}

static inline int btrfs_advance_sb_log(struct btrfs_device *device, int mirror)
{
	return 0;
}

static inline int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror)
{
	return 0;
}

static inline u64 btrfs_find_allocatable_zones(struct btrfs_device *device,
					       u64 hole_start, u64 hole_end,
					       u64 num_bytes)
{
	return hole_start;
}

static inline int btrfs_reset_device_zone(struct btrfs_device *device,
					  u64 physical, u64 length, u64 *bytes)
{
	*bytes = 0;
	return 0;
}

static inline int btrfs_ensure_empty_zones(struct btrfs_device *device,
					   u64 start, u64 size)
{
	return 0;
}

static inline int btrfs_load_block_group_zone_info(
		struct btrfs_block_group *cache, bool new)
{
	return 0;
}

static inline void btrfs_calc_zone_unusable(struct btrfs_block_group *cache) { }

static inline void btrfs_redirty_list_add(struct btrfs_transaction *trans,
					  struct extent_buffer *eb) { }
static inline void btrfs_free_redirty_list(struct btrfs_transaction *trans) { }

static inline bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start)
{
	return false;
}

static inline void btrfs_record_physical_zoned(struct inode *inode,
					       u64 file_offset, struct bio *bio)
{
}

static inline void btrfs_rewrite_logical_zoned(
				struct btrfs_ordered_extent *ordered) { }

static inline bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
			       struct extent_buffer *eb,
			       struct btrfs_block_group **cache_ret)
{
	return true;
}

static inline void btrfs_revert_meta_write_pointer(
						struct btrfs_block_group *cache,
						struct extent_buffer *eb)
{
}

static inline int btrfs_zoned_issue_zeroout(struct btrfs_device *device,
					    u64 physical, u64 length)
{
	return -EOPNOTSUPP;
}

static inline int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev,
						u64 logical, u64 physical_start,
						u64 physical_pos)
{
	return -EOPNOTSUPP;
}

static inline struct btrfs_device *btrfs_zoned_get_device(
						  struct btrfs_fs_info *fs_info,
						  u64 logical, u64 length)
{
	return ERR_PTR(-EOPNOTSUPP);
}

static inline bool btrfs_zone_activate(struct btrfs_block_group *block_group)
{
	return true;
}

static inline int btrfs_zone_finish(struct btrfs_block_group *block_group)
{
	return 0;
}

static inline bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices,
					   u64 flags)
{
	return true;
}

static inline void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info,
					   u64 logical, u64 length) { }

static inline void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg) { }

static inline void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info) { }
#endif

static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos)
{
	struct btrfs_zoned_device_info *zone_info = device->zone_info;

	if (!zone_info)
		return false;

	return test_bit(pos >> zone_info->zone_size_shift, zone_info->seq_zones);
}

static inline bool btrfs_dev_is_empty_zone(struct btrfs_device *device, u64 pos)
{
	struct btrfs_zoned_device_info *zone_info = device->zone_info;

	if (!zone_info)
		return true;

	return test_bit(pos >> zone_info->zone_size_shift, zone_info->empty_zones);
}

static inline void btrfs_dev_set_empty_zone_bit(struct btrfs_device *device,
						u64 pos, bool set)
{
	struct btrfs_zoned_device_info *zone_info = device->zone_info;
	unsigned int zno;

	if (!zone_info)
		return;

	zno = pos >> zone_info->zone_size_shift;
	if (set)
		set_bit(zno, zone_info->empty_zones);
	else
		clear_bit(zno, zone_info->empty_zones);
}

static inline void btrfs_dev_set_zone_empty(struct btrfs_device *device, u64 pos)
{
	btrfs_dev_set_empty_zone_bit(device, pos, true);
}

static inline void btrfs_dev_clear_zone_empty(struct btrfs_device *device, u64 pos)
{
	btrfs_dev_set_empty_zone_bit(device, pos, false);
}

static inline bool btrfs_check_device_zone_type(const struct btrfs_fs_info *fs_info,
						struct block_device *bdev)
{
	if (btrfs_is_zoned(fs_info)) {
		/*
		 * We can allow a regular device on a zoned filesystem, because
		 * we will emulate the zoned capabilities.
		 */
		if (!bdev_is_zoned(bdev))
			return true;

		return fs_info->zone_size ==
			(bdev_zone_sectors(bdev) << SECTOR_SHIFT);
	}

	/* Do not allow Host Manged zoned device */
	return bdev_zoned_model(bdev) != BLK_ZONED_HM;
}

static inline bool btrfs_check_super_location(struct btrfs_device *device, u64 pos)
{
	/*
	 * On a non-zoned device, any address is OK. On a zoned device,
	 * non-SEQUENTIAL WRITE REQUIRED zones are capable.
	 */
	return device->zone_info == NULL || !btrfs_dev_is_sequential(device, pos);
}

static inline bool btrfs_can_zone_reset(struct btrfs_device *device,
					u64 physical, u64 length)
{
	u64 zone_size;

	if (!btrfs_dev_is_sequential(device, physical))
		return false;

	zone_size = device->zone_info->zone_size;
	if (!IS_ALIGNED(physical, zone_size) || !IS_ALIGNED(length, zone_size))
		return false;

	return true;
}

static inline void btrfs_zoned_meta_io_lock(struct btrfs_fs_info *fs_info)
{
	if (!btrfs_is_zoned(fs_info))
		return;
	mutex_lock(&fs_info->zoned_meta_io_lock);
}

static inline void btrfs_zoned_meta_io_unlock(struct btrfs_fs_info *fs_info)
{
	if (!btrfs_is_zoned(fs_info))
		return;
	mutex_unlock(&fs_info->zoned_meta_io_lock);
}

static inline void btrfs_clear_treelog_bg(struct btrfs_block_group *bg)
{
	struct btrfs_fs_info *fs_info = bg->fs_info;

	if (!btrfs_is_zoned(fs_info))
		return;

	spin_lock(&fs_info->treelog_bg_lock);
	if (fs_info->treelog_bg == bg->start)
		fs_info->treelog_bg = 0;
	spin_unlock(&fs_info->treelog_bg_lock);
}

static inline void btrfs_zoned_data_reloc_lock(struct btrfs_inode *inode)
{
	struct btrfs_root *root = inode->root;

	if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
		mutex_lock(&root->fs_info->zoned_data_reloc_io_lock);
}

static inline void btrfs_zoned_data_reloc_unlock(struct btrfs_inode *inode)
{
	struct btrfs_root *root = inode->root;

	if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
		mutex_unlock(&root->fs_info->zoned_data_reloc_io_lock);
}

#endif
Commit	Line	Data
5b316468 NA	1	/* SPDX-License-Identifier: GPL-2.0 */
	2
	3	#ifndef BTRFS_ZONED_H
	4	#define BTRFS_ZONED_H
	5
	6	#include <linux/types.h>
b70f5097	7	#include <linux/blkdev.h>
12659251 NA	8	#include "volumes.h"
12659251 NA	9	#include "disk-io.h"
40ab3be1	10	#include "block-group.h"
869f4cdc	11	#include "btrfs_inode.h"
5b316468	12
18bb8bbf JT	13	/*
	14	* Block groups with more than this value (percents) of unusable space will be
	15	* scheduled for background reclaim.
	16	*/
	17	#define BTRFS_DEFAULT_RECLAIM_THRESH 75
	18
5b316468 NA	19	struct btrfs_zoned_device_info {
	20	/*
	21	* Number of zones, zone size and types of zones if bdev is a
	22	* zoned block device.
	23	*/
	24	u64 zone_size;
	25	u8 zone_size_shift;
	26	u32 nr_zones;
ea6f8ddc NA	27	unsigned int max_active_zones;
ea6f8ddc NA	28	atomic_t active_zones_left;
5b316468 NA	29	unsigned long *seq_zones;
5b316468 NA	30	unsigned long *empty_zones;
ea6f8ddc	31	unsigned long *active_zones;
16beac87	32	struct blk_zone *zone_cache;
12659251	33	struct blk_zone sb_zones[2 * BTRFS_SUPER_MIRROR_MAX];
5b316468 NA	34	};
	35
	36	#ifdef CONFIG_BLK_DEV_ZONED
	37	int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
	38	struct blk_zone *zone);
73651042	39	int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info);
16beac87	40	int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache);
5b316468	41	void btrfs_destroy_dev_zone_info(struct btrfs_device *device);
b70f5097	42	int btrfs_check_zoned_mode(struct btrfs_fs_info *fs_info);
5d1ab66c	43	int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info);
12659251 NA	44	int btrfs_sb_log_location_bdev(struct block_device *bdev, int mirror, int rw,
	45	u64 *bytenr_ret);
	46	int btrfs_sb_log_location(struct btrfs_device *device, int mirror, int rw,
	47	u64 *bytenr_ret);
8376d9e1	48	int btrfs_advance_sb_log(struct btrfs_device *device, int mirror);
12659251	49	int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror);
1cd6121f NA	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);
a94794d5	55	int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new);
169e0da9	56	void btrfs_calc_zone_unusable(struct btrfs_block_group *cache);
d3575156 NA	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);
e380adfc	60	bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start);
d8e3fb10 NA	61	void btrfs_record_physical_zoned(struct inode *inode, u64 file_offset,
	62	struct bio *bio);
	63	void btrfs_rewrite_logical_zoned(struct btrfs_ordered_extent *ordered);
0bc09ca1 NA	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);
de17addc	69	int btrfs_zoned_issue_zeroout(struct btrfs_device *device, u64 physical, u64 length);
7db1c5d1 NA	70	int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev, u64 logical,
7db1c5d1 NA	71	u64 physical_start, u64 physical_pos);
e7ff9e6b JT	72	struct btrfs_device btrfs_zoned_get_device(struct btrfs_fs_info fs_info,
e7ff9e6b JT	73	u64 logical, u64 length);
afba2bc0 NA	74	bool btrfs_zone_activate(struct btrfs_block_group *block_group);
afba2bc0 NA	75	int btrfs_zone_finish(struct btrfs_block_group *block_group);
82187d2e	76	bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices, u64 flags);
be1a1d7a NA	77	void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info, u64 logical,
be1a1d7a NA	78	u64 length);
c2707a25	79	void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg);
16beac87	80	void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info);
5b316468 NA	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)
	84	{
	85	return 0;
	86	}
	87
73651042 NA	88	static inline int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info)
	89	{
	90	return 0;
	91	}
	92
16beac87 NA	93	static inline int btrfs_get_dev_zone_info(struct btrfs_device *device,
16beac87 NA	94	bool populate_cache)
5b316468 NA	95	{
	96	return 0;
	97	}
	98
	99	static inline void btrfs_destroy_dev_zone_info(struct btrfs_device *device) { }
	100
b70f5097 NA	101	static inline int btrfs_check_zoned_mode(const struct btrfs_fs_info *fs_info)
	102	{
	103	if (!btrfs_is_zoned(fs_info))
	104	return 0;
	105
	106	btrfs_err(fs_info, "zoned block devices support is not enabled");
	107	return -EOPNOTSUPP;
	108	}
	109
5d1ab66c NA	110	static inline int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info)
	111	{
	112	return 0;
	113	}
	114
12659251 NA	115	static inline int btrfs_sb_log_location_bdev(struct block_device *bdev,
	116	int mirror, int rw, u64 *bytenr_ret)
	117	{
	118	*bytenr_ret = btrfs_sb_offset(mirror);
	119	return 0;
	120	}
	121
	122	static inline int btrfs_sb_log_location(struct btrfs_device *device, int mirror,
	123	int rw, u64 *bytenr_ret)
	124	{
	125	*bytenr_ret = btrfs_sb_offset(mirror);
	126	return 0;
	127	}
	128
8376d9e1 NA	129	static inline int btrfs_advance_sb_log(struct btrfs_device *device, int mirror)
	130	{
	131	return 0;
	132	}
12659251 NA	133
	134	static inline int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror)
	135	{
	136	return 0;
	137	}
	138
1cd6121f NA	139	static inline u64 btrfs_find_allocatable_zones(struct btrfs_device *device,
	140	u64 hole_start, u64 hole_end,
	141	u64 num_bytes)
	142	{
	143	return hole_start;
	144	}
	145
	146	static inline int btrfs_reset_device_zone(struct btrfs_device *device,
	147	u64 physical, u64 length, u64 *bytes)
	148	{
	149	*bytes = 0;
	150	return 0;
	151	}
	152
	153	static inline int btrfs_ensure_empty_zones(struct btrfs_device *device,
	154	u64 start, u64 size)
	155	{
	156	return 0;
	157	}
	158
08e11a3d	159	static inline int btrfs_load_block_group_zone_info(
a94794d5	160	struct btrfs_block_group *cache, bool new)
08e11a3d NA	161	{
	162	return 0;
	163	}
	164
169e0da9 NA	165	static inline void btrfs_calc_zone_unusable(struct btrfs_block_group *cache) { }
169e0da9 NA	166
d3575156 NA	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) { }
	170
e380adfc	171	static inline bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start)
08f45559 JT	172	{
	173	return false;
	174	}
d8e3fb10 NA	175
	176	static inline void btrfs_record_physical_zoned(struct inode *inode,
	177	u64 file_offset, struct bio *bio)
	178	{
	179	}
	180
	181	static inline void btrfs_rewrite_logical_zoned(
	182	struct btrfs_ordered_extent *ordered) { }
	183
0bc09ca1 NA	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)
	187	{
	188	return true;
	189	}
	190
	191	static inline void btrfs_revert_meta_write_pointer(
	192	struct btrfs_block_group *cache,
	193	struct extent_buffer *eb)
	194	{
	195	}
	196
de17addc NA	197	static inline int btrfs_zoned_issue_zeroout(struct btrfs_device *device,
	198	u64 physical, u64 length)
	199	{
	200	return -EOPNOTSUPP;
	201	}
	202
7db1c5d1 NA	203	static inline int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev,
	204	u64 logical, u64 physical_start,
	205	u64 physical_pos)
	206	{
	207	return -EOPNOTSUPP;
	208	}
	209
e7ff9e6b JT	210	static inline struct btrfs_device *btrfs_zoned_get_device(
	211	struct btrfs_fs_info *fs_info,
	212	u64 logical, u64 length)
	213	{
	214	return ERR_PTR(-EOPNOTSUPP);
	215	}
	216
afba2bc0 NA	217	static inline bool btrfs_zone_activate(struct btrfs_block_group *block_group)
	218	{
	219	return true;
	220	}
	221
	222	static inline int btrfs_zone_finish(struct btrfs_block_group *block_group)
	223	{
	224	return 0;
	225	}
	226
a85f05e5	227	static inline bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices,
82187d2e	228	u64 flags)
a85f05e5 NA	229	{
	230	return true;
	231	}
	232
be1a1d7a NA	233	static inline void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info,
	234	u64 logical, u64 length) { }
	235
c2707a25 JT	236	static inline void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg) { }
c2707a25 JT	237
16beac87	238	static inline void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info) { }
5b316468 NA	239	#endif
	240
	241	static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos)
	242	{
	243	struct btrfs_zoned_device_info *zone_info = device->zone_info;
	244
	245	if (!zone_info)
	246	return false;
	247
	248	return test_bit(pos >> zone_info->zone_size_shift, zone_info->seq_zones);
	249	}
	250
	251	static inline bool btrfs_dev_is_empty_zone(struct btrfs_device *device, u64 pos)
	252	{
	253	struct btrfs_zoned_device_info *zone_info = device->zone_info;
	254
	255	if (!zone_info)
	256	return true;
	257
	258	return test_bit(pos >> zone_info->zone_size_shift, zone_info->empty_zones);
	259	}
	260
	261	static inline void btrfs_dev_set_empty_zone_bit(struct btrfs_device *device,
	262	u64 pos, bool set)
	263	{
	264	struct btrfs_zoned_device_info *zone_info = device->zone_info;
	265	unsigned int zno;
	266
	267	if (!zone_info)
	268	return;
	269
	270	zno = pos >> zone_info->zone_size_shift;
	271	if (set)
	272	set_bit(zno, zone_info->empty_zones);
	273	else
	274	clear_bit(zno, zone_info->empty_zones);
	275	}
	276
	277	static inline void btrfs_dev_set_zone_empty(struct btrfs_device *device, u64 pos)
	278	{
	279	btrfs_dev_set_empty_zone_bit(device, pos, true);
	280	}
	281
	282	static inline void btrfs_dev_clear_zone_empty(struct btrfs_device *device, u64 pos)
	283	{
	284	btrfs_dev_set_empty_zone_bit(device, pos, false);
	285	}
	286
b70f5097 NA	287	static inline bool btrfs_check_device_zone_type(const struct btrfs_fs_info *fs_info,
	288	struct block_device *bdev)
	289	{
b70f5097	290	if (btrfs_is_zoned(fs_info)) {
3c9daa09 JT	291	/*
	292	* We can allow a regular device on a zoned filesystem, because
	293	* we will emulate the zoned capabilities.
	294	*/
	295	if (!bdev_is_zoned(bdev))
	296	return true;
	297
	298	return fs_info->zone_size ==
	299	(bdev_zone_sectors(bdev) << SECTOR_SHIFT);
b70f5097 NA	300	}
	301
	302	/* Do not allow Host Manged zoned device */
	303	return bdev_zoned_model(bdev) != BLK_ZONED_HM;
	304	}
	305
12659251 NA	306	static inline bool btrfs_check_super_location(struct btrfs_device *device, u64 pos)
	307	{
	308	/*
	309	* On a non-zoned device, any address is OK. On a zoned device,
	310	* non-SEQUENTIAL WRITE REQUIRED zones are capable.
	311	*/
	312	return device->zone_info == NULL \|\| !btrfs_dev_is_sequential(device, pos);
	313	}
	314
dcba6e48 NA	315	static inline bool btrfs_can_zone_reset(struct btrfs_device *device,
	316	u64 physical, u64 length)
	317	{
	318	u64 zone_size;
	319
	320	if (!btrfs_dev_is_sequential(device, physical))
	321	return false;
	322
	323	zone_size = device->zone_info->zone_size;
	324	if (!IS_ALIGNED(physical, zone_size) \|\| !IS_ALIGNED(length, zone_size))
	325	return false;
	326
	327	return true;
	328	}
	329
0bc09ca1 NA	330	static inline void btrfs_zoned_meta_io_lock(struct btrfs_fs_info *fs_info)
	331	{
	332	if (!btrfs_is_zoned(fs_info))
	333	return;
	334	mutex_lock(&fs_info->zoned_meta_io_lock);
	335	}
	336
	337	static inline void btrfs_zoned_meta_io_unlock(struct btrfs_fs_info *fs_info)
	338	{
	339	if (!btrfs_is_zoned(fs_info))
	340	return;
	341	mutex_unlock(&fs_info->zoned_meta_io_lock);
	342	}
	343
40ab3be1 NA	344	static inline void btrfs_clear_treelog_bg(struct btrfs_block_group *bg)
	345	{
	346	struct btrfs_fs_info *fs_info = bg->fs_info;
	347
	348	if (!btrfs_is_zoned(fs_info))
	349	return;
	350
	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);
	355	}
	356
869f4cdc JT	357	static inline void btrfs_zoned_data_reloc_lock(struct btrfs_inode *inode)
	358	{
	359	struct btrfs_root *root = inode->root;
	360
	361	if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
5f0addf7	362	mutex_lock(&root->fs_info->zoned_data_reloc_io_lock);
869f4cdc JT	363	}
	364
	365	static inline void btrfs_zoned_data_reloc_unlock(struct btrfs_inode *inode)
	366	{
	367	struct btrfs_root *root = inode->root;
	368
	369	if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
5f0addf7	370	mutex_unlock(&root->fs_info->zoned_data_reloc_io_lock);
869f4cdc JT	371	}
869f4cdc JT	372
5b316468	373	#endif