[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 "messages.h"
#include "volumes.h"
#include "disk-io.h"
#include "block-group.h"
#include "btrfs_inode.h"

#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;
	/*
	 * Reserved active zones for one metadata and one system block group.
	 * It can vary per-device depending on the allocation status.
	 */
	int reserved_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];
};

void btrfs_finish_ordered_zoned(struct btrfs_ordered_extent *ordered);

#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);
struct btrfs_zoned_device_info *btrfs_clone_dev_zone_info(struct btrfs_device *orig_dev);
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);
bool btrfs_use_zone_append(struct btrfs_bio *bbio);
void btrfs_record_physical_zoned(struct btrfs_bio *bbio);
int btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
				   struct btrfs_eb_write_context *ctx);
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);
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_schedule_zone_finish_bg(struct btrfs_block_group *bg,
				   struct extent_buffer *eb);
void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg);
void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info);
bool btrfs_zoned_should_reclaim(struct btrfs_fs_info *fs_info);
void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info, u64 logical,
				       u64 length);
int btrfs_zone_finish_one_bg(struct btrfs_fs_info *fs_info);
int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info,
				struct btrfs_space_info *space_info, bool do_finish);
void btrfs_check_active_zone_reservation(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) { }

/*
 * In case the kernel is compiled without CONFIG_BLK_DEV_ZONED we'll never call
 * into btrfs_clone_dev_zone_info() so it's safe to return NULL here.
 */
static inline struct btrfs_zoned_device_info *btrfs_clone_dev_zone_info(
						 struct btrfs_device *orig_dev)
{
	return NULL;
}

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 bool btrfs_use_zone_append(struct btrfs_bio *bbio)
{
	return false;
}

static inline void btrfs_record_physical_zoned(struct btrfs_bio *bbio)
{
}

static inline int btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
						 struct btrfs_eb_write_context *ctx)
{
	return 0;
}

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 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_schedule_zone_finish_bg(struct btrfs_block_group *bg,
						 struct extent_buffer *eb) { }

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) { }

static inline bool btrfs_zoned_should_reclaim(struct btrfs_fs_info *fs_info)
{
	return false;
}

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

static inline int btrfs_zone_finish_one_bg(struct btrfs_fs_info *fs_info)
{
	return 1;
}

static inline int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info,
					      struct btrfs_space_info *space_info,
					      bool do_finish)
{
	/* Consider all the block groups are active */
	return 0;
}

static inline void btrfs_check_active_zone_reservation(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);
}

static inline bool btrfs_zoned_bg_is_full(const struct btrfs_block_group *bg)
{
	ASSERT(btrfs_is_zoned(bg->fs_info));
	return (bg->alloc_offset == bg->zone_capacity);
}

#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>
9b569ea0	8	#include "messages.h"
12659251 NA	9	#include "volumes.h"
12659251 NA	10	#include "disk-io.h"
40ab3be1	11	#include "block-group.h"
869f4cdc	12	#include "btrfs_inode.h"
5b316468	13
bb5a098d	14	#define BTRFS_DEFAULT_RECLAIM_THRESH (75)
18bb8bbf	15
5b316468 NA	16	struct btrfs_zoned_device_info {
	17	/*
	18	* Number of zones, zone size and types of zones if bdev is a
	19	* zoned block device.
	20	*/
	21	u64 zone_size;
	22	u8 zone_size_shift;
	23	u32 nr_zones;
ea6f8ddc	24	unsigned int max_active_zones;
a7e1ac7b NA	25	/*
	26	* Reserved active zones for one metadata and one system block group.
	27	* It can vary per-device depending on the allocation status.
	28	*/
	29	int reserved_active_zones;
ea6f8ddc	30	atomic_t active_zones_left;
5b316468 NA	31	unsigned long *seq_zones;
5b316468 NA	32	unsigned long *empty_zones;
ea6f8ddc	33	unsigned long *active_zones;
16beac87	34	struct blk_zone *zone_cache;
12659251	35	struct blk_zone sb_zones[2 * BTRFS_SUPER_MIRROR_MAX];
5b316468 NA	36	};
5b316468 NA	37
71df088c CH	38	void btrfs_finish_ordered_zoned(struct btrfs_ordered_extent *ordered);
71df088c CH	39
5b316468 NA	40	#ifdef CONFIG_BLK_DEV_ZONED
	41	int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
	42	struct blk_zone *zone);
73651042	43	int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info);
16beac87	44	int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache);
5b316468	45	void btrfs_destroy_dev_zone_info(struct btrfs_device *device);
21e61ec6	46	struct btrfs_zoned_device_info btrfs_clone_dev_zone_info(struct btrfs_device orig_dev);
b70f5097	47	int btrfs_check_zoned_mode(struct btrfs_fs_info *fs_info);
5d1ab66c	48	int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info);
12659251 NA	49	int btrfs_sb_log_location_bdev(struct block_device *bdev, int mirror, int rw,
	50	u64 *bytenr_ret);
	51	int btrfs_sb_log_location(struct btrfs_device *device, int mirror, int rw,
	52	u64 *bytenr_ret);
8376d9e1	53	int btrfs_advance_sb_log(struct btrfs_device *device, int mirror);
12659251	54	int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror);
1cd6121f NA	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);
a94794d5	60	int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new);
169e0da9	61	void btrfs_calc_zone_unusable(struct btrfs_block_group *cache);
d3575156 NA	62	void btrfs_redirty_list_add(struct btrfs_transaction *trans,
d3575156 NA	63	struct extent_buffer *eb);
921603c7	64	bool btrfs_use_zone_append(struct btrfs_bio *bbio);
69ccf3f4	65	void btrfs_record_physical_zoned(struct btrfs_bio *bbio);
2ad8c051 NA	66	int btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
2ad8c051 NA	67	struct btrfs_eb_write_context *ctx);
de17addc	68	int btrfs_zoned_issue_zeroout(struct btrfs_device *device, u64 physical, u64 length);
7db1c5d1 NA	69	int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev, u64 logical,
7db1c5d1 NA	70	u64 physical_start, u64 physical_pos);
afba2bc0 NA	71	bool btrfs_zone_activate(struct btrfs_block_group *block_group);
afba2bc0 NA	72	int btrfs_zone_finish(struct btrfs_block_group *block_group);
82187d2e	73	bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices, u64 flags);
be1a1d7a NA	74	void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info, u64 logical,
be1a1d7a NA	75	u64 length);
56fbb0a4 NA	76	void btrfs_schedule_zone_finish_bg(struct btrfs_block_group *bg,
56fbb0a4 NA	77	struct extent_buffer *eb);
c2707a25	78	void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg);
16beac87	79	void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info);
3687fcb0	80	bool btrfs_zoned_should_reclaim(struct btrfs_fs_info *fs_info);
343d8a30 NA	81	void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info, u64 logical,
343d8a30 NA	82	u64 length);
393f646e	83	int btrfs_zone_finish_one_bg(struct btrfs_fs_info *fs_info);
b0931513 NA	84	int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info,
b0931513 NA	85	struct btrfs_space_info *space_info, bool do_finish);
a7e1ac7b	86	void btrfs_check_active_zone_reservation(struct btrfs_fs_info *fs_info);
5b316468 NA	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)
	90	{
	91	return 0;
	92	}
	93
73651042 NA	94	static inline int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info)
	95	{
	96	return 0;
	97	}
	98
16beac87 NA	99	static inline int btrfs_get_dev_zone_info(struct btrfs_device *device,
16beac87 NA	100	bool populate_cache)
5b316468 NA	101	{
	102	return 0;
	103	}
	104
	105	static inline void btrfs_destroy_dev_zone_info(struct btrfs_device *device) { }
	106
21e61ec6 JT	107	/*
	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.
	110	*/
	111	static inline struct btrfs_zoned_device_info *btrfs_clone_dev_zone_info(
	112	struct btrfs_device *orig_dev)
	113	{
	114	return NULL;
	115	}
	116
b70f5097 NA	117	static inline int btrfs_check_zoned_mode(const struct btrfs_fs_info *fs_info)
	118	{
	119	if (!btrfs_is_zoned(fs_info))
	120	return 0;
	121
	122	btrfs_err(fs_info, "zoned block devices support is not enabled");
	123	return -EOPNOTSUPP;
	124	}
	125
5d1ab66c NA	126	static inline int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info)
	127	{
	128	return 0;
	129	}
	130
12659251 NA	131	static inline int btrfs_sb_log_location_bdev(struct block_device *bdev,
	132	int mirror, int rw, u64 *bytenr_ret)
	133	{
	134	*bytenr_ret = btrfs_sb_offset(mirror);
	135	return 0;
	136	}
	137
	138	static inline int btrfs_sb_log_location(struct btrfs_device *device, int mirror,
	139	int rw, u64 *bytenr_ret)
	140	{
	141	*bytenr_ret = btrfs_sb_offset(mirror);
	142	return 0;
	143	}
	144
8376d9e1 NA	145	static inline int btrfs_advance_sb_log(struct btrfs_device *device, int mirror)
	146	{
	147	return 0;
	148	}
12659251 NA	149
	150	static inline int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror)
	151	{
	152	return 0;
	153	}
	154
1cd6121f NA	155	static inline u64 btrfs_find_allocatable_zones(struct btrfs_device *device,
	156	u64 hole_start, u64 hole_end,
	157	u64 num_bytes)
	158	{
	159	return hole_start;
	160	}
	161
	162	static inline int btrfs_reset_device_zone(struct btrfs_device *device,
	163	u64 physical, u64 length, u64 *bytes)
	164	{
	165	*bytes = 0;
	166	return 0;
	167	}
	168
	169	static inline int btrfs_ensure_empty_zones(struct btrfs_device *device,
	170	u64 start, u64 size)
	171	{
	172	return 0;
	173	}
	174
08e11a3d	175	static inline int btrfs_load_block_group_zone_info(
a94794d5	176	struct btrfs_block_group *cache, bool new)
08e11a3d NA	177	{
	178	return 0;
	179	}
	180
169e0da9 NA	181	static inline void btrfs_calc_zone_unusable(struct btrfs_block_group *cache) { }
169e0da9 NA	182
d3575156 NA	183	static inline void btrfs_redirty_list_add(struct btrfs_transaction *trans,
d3575156 NA	184	struct extent_buffer *eb) { }
d3575156	185
921603c7	186	static inline bool btrfs_use_zone_append(struct btrfs_bio *bbio)
08f45559 JT	187	{
	188	return false;
	189	}
d8e3fb10	190
69ccf3f4	191	static inline void btrfs_record_physical_zoned(struct btrfs_bio *bbio)
d8e3fb10 NA	192	{
	193	}
	194
2ad8c051 NA	195	static inline int btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
2ad8c051 NA	196	struct btrfs_eb_write_context *ctx)
0bc09ca1	197	{
2ad8c051	198	return 0;
0bc09ca1 NA	199	}
0bc09ca1 NA	200
de17addc NA	201	static inline int btrfs_zoned_issue_zeroout(struct btrfs_device *device,
	202	u64 physical, u64 length)
	203	{
	204	return -EOPNOTSUPP;
	205	}
	206
7db1c5d1 NA	207	static inline int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev,
	208	u64 logical, u64 physical_start,
	209	u64 physical_pos)
	210	{
	211	return -EOPNOTSUPP;
	212	}
	213
afba2bc0 NA	214	static inline bool btrfs_zone_activate(struct btrfs_block_group *block_group)
	215	{
	216	return true;
	217	}
	218
	219	static inline int btrfs_zone_finish(struct btrfs_block_group *block_group)
	220	{
	221	return 0;
	222	}
	223
a85f05e5	224	static inline bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices,
82187d2e	225	u64 flags)
a85f05e5 NA	226	{
	227	return true;
	228	}
	229
be1a1d7a NA	230	static inline void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info,
	231	u64 logical, u64 length) { }
	232
56fbb0a4 NA	233	static inline void btrfs_schedule_zone_finish_bg(struct btrfs_block_group *bg,
	234	struct extent_buffer *eb) { }
	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) { }
3687fcb0 JT	239
	240	static inline bool btrfs_zoned_should_reclaim(struct btrfs_fs_info *fs_info)
	241	{
	242	return false;
	243	}
343d8a30 NA	244
	245	static inline void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info,
	246	u64 logical, u64 length) { }
393f646e NA	247
	248	static inline int btrfs_zone_finish_one_bg(struct btrfs_fs_info *fs_info)
	249	{
	250	return 1;
	251	}
	252
b0931513 NA	253	static inline int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info,
	254	struct btrfs_space_info *space_info,
	255	bool do_finish)
	256	{
	257	/* Consider all the block groups are active */
	258	return 0;
	259	}
	260
a7e1ac7b NA	261	static inline void btrfs_check_active_zone_reservation(struct btrfs_fs_info *fs_info) { }
a7e1ac7b NA	262
5b316468 NA	263	#endif
	264
	265	static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos)
	266	{
	267	struct btrfs_zoned_device_info *zone_info = device->zone_info;
	268
	269	if (!zone_info)
	270	return false;
	271
	272	return test_bit(pos >> zone_info->zone_size_shift, zone_info->seq_zones);
	273	}
	274
	275	static inline bool btrfs_dev_is_empty_zone(struct btrfs_device *device, u64 pos)
	276	{
	277	struct btrfs_zoned_device_info *zone_info = device->zone_info;
	278
	279	if (!zone_info)
	280	return true;
	281
	282	return test_bit(pos >> zone_info->zone_size_shift, zone_info->empty_zones);
	283	}
	284
	285	static inline void btrfs_dev_set_empty_zone_bit(struct btrfs_device *device,
	286	u64 pos, bool set)
	287	{
	288	struct btrfs_zoned_device_info *zone_info = device->zone_info;
	289	unsigned int zno;
	290
	291	if (!zone_info)
	292	return;
	293
	294	zno = pos >> zone_info->zone_size_shift;
	295	if (set)
	296	set_bit(zno, zone_info->empty_zones);
	297	else
	298	clear_bit(zno, zone_info->empty_zones);
	299	}
	300
	301	static inline void btrfs_dev_set_zone_empty(struct btrfs_device *device, u64 pos)
	302	{
	303	btrfs_dev_set_empty_zone_bit(device, pos, true);
	304	}
	305
	306	static inline void btrfs_dev_clear_zone_empty(struct btrfs_device *device, u64 pos)
	307	{
	308	btrfs_dev_set_empty_zone_bit(device, pos, false);
	309	}
	310
b70f5097 NA	311	static inline bool btrfs_check_device_zone_type(const struct btrfs_fs_info *fs_info,
	312	struct block_device *bdev)
	313	{
b70f5097	314	if (btrfs_is_zoned(fs_info)) {
3c9daa09 JT	315	/*
	316	* We can allow a regular device on a zoned filesystem, because
	317	* we will emulate the zoned capabilities.
	318	*/
	319	if (!bdev_is_zoned(bdev))
	320	return true;
	321
	322	return fs_info->zone_size ==
	323	(bdev_zone_sectors(bdev) << SECTOR_SHIFT);
b70f5097 NA	324	}
	325
	326	/* Do not allow Host Manged zoned device */
	327	return bdev_zoned_model(bdev) != BLK_ZONED_HM;
	328	}
	329
12659251 NA	330	static inline bool btrfs_check_super_location(struct btrfs_device *device, u64 pos)
	331	{
	332	/*
	333	* On a non-zoned device, any address is OK. On a zoned device,
	334	* non-SEQUENTIAL WRITE REQUIRED zones are capable.
	335	*/
	336	return device->zone_info == NULL \|\| !btrfs_dev_is_sequential(device, pos);
	337	}
	338
dcba6e48 NA	339	static inline bool btrfs_can_zone_reset(struct btrfs_device *device,
	340	u64 physical, u64 length)
	341	{
	342	u64 zone_size;
	343
	344	if (!btrfs_dev_is_sequential(device, physical))
	345	return false;
	346
	347	zone_size = device->zone_info->zone_size;
	348	if (!IS_ALIGNED(physical, zone_size) \|\| !IS_ALIGNED(length, zone_size))
	349	return false;
	350
	351	return true;
	352	}
	353
0bc09ca1 NA	354	static inline void btrfs_zoned_meta_io_lock(struct btrfs_fs_info *fs_info)
	355	{
	356	if (!btrfs_is_zoned(fs_info))
	357	return;
	358	mutex_lock(&fs_info->zoned_meta_io_lock);
	359	}
	360
	361	static inline void btrfs_zoned_meta_io_unlock(struct btrfs_fs_info *fs_info)
	362	{
	363	if (!btrfs_is_zoned(fs_info))
	364	return;
	365	mutex_unlock(&fs_info->zoned_meta_io_lock);
	366	}
	367
40ab3be1 NA	368	static inline void btrfs_clear_treelog_bg(struct btrfs_block_group *bg)
	369	{
	370	struct btrfs_fs_info *fs_info = bg->fs_info;
	371
	372	if (!btrfs_is_zoned(fs_info))
	373	return;
	374
	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);
	379	}
	380
869f4cdc JT	381	static inline void btrfs_zoned_data_reloc_lock(struct btrfs_inode *inode)
	382	{
	383	struct btrfs_root *root = inode->root;
	384
	385	if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
5f0addf7	386	mutex_lock(&root->fs_info->zoned_data_reloc_io_lock);
869f4cdc JT	387	}
	388
	389	static inline void btrfs_zoned_data_reloc_unlock(struct btrfs_inode *inode)
	390	{
	391	struct btrfs_root *root = inode->root;
	392
	393	if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
5f0addf7	394	mutex_unlock(&root->fs_info->zoned_data_reloc_io_lock);
869f4cdc JT	395	}
869f4cdc JT	396
1bfd4767 NA	397	static inline bool btrfs_zoned_bg_is_full(const struct btrfs_block_group *bg)
	398	{
	399	ASSERT(btrfs_is_zoned(bg->fs_info));
	400	return (bg->alloc_offset == bg->zone_capacity);
	401	}
	402
5b316468	403	#endif