[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/atomic.h>
#include <linux/blkdev.h>
#include <linux/blkzoned.h>
#include <linux/errno.h>
#include <linux/spinlock.h>
#include <linux/mutex.h>
#include "messages.h"
#include "volumes.h"
#include "disk-io.h"
#include "block-group.h"
#include "btrfs_inode.h"
#include "fs.h"

struct block_device;
struct extent_buffer;
struct btrfs_bio;
struct btrfs_ordered_extent;
struct btrfs_fs_info;
struct btrfs_space_info;
struct btrfs_eb_write_context;
struct btrfs_fs_devices;

#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_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(const struct btrfs_fs_info *info,
				unsigned long long *mount_opt);
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);
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(const 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);
int btrfs_reset_unused_block_groups(struct btrfs_space_info *space_info, u64 num_bytes);
#else /* CONFIG_BLK_DEV_ZONED */

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(const struct btrfs_fs_info *info,
					      unsigned long long *mount_opt)
{
	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 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(const 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) { }

static inline int btrfs_reset_unused_block_groups(struct btrfs_space_info *space_info,
						  u64 num_bytes)
{
	return 0;
}

#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 Managed zoned device. */
	return !bdev_is_zoned(bdev);
}

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>
602035d7	7	#include <linux/atomic.h>
b70f5097	8	#include <linux/blkdev.h>
602035d7 DS	9	#include <linux/blkzoned.h>
	10	#include <linux/errno.h>
	11	#include <linux/spinlock.h>
	12	#include <linux/mutex.h>
9b569ea0	13	#include "messages.h"
12659251 NA	14	#include "volumes.h"
12659251 NA	15	#include "disk-io.h"
40ab3be1	16	#include "block-group.h"
869f4cdc	17	#include "btrfs_inode.h"
602035d7 DS	18	#include "fs.h"
	19
	20	struct block_device;
	21	struct extent_buffer;
	22	struct btrfs_bio;
	23	struct btrfs_ordered_extent;
	24	struct btrfs_fs_info;
	25	struct btrfs_space_info;
	26	struct btrfs_eb_write_context;
	27	struct btrfs_fs_devices;
5b316468	28
bb5a098d	29	#define BTRFS_DEFAULT_RECLAIM_THRESH (75)
18bb8bbf	30
5b316468 NA	31	struct btrfs_zoned_device_info {
	32	/*
	33	* Number of zones, zone size and types of zones if bdev is a
	34	* zoned block device.
	35	*/
	36	u64 zone_size;
	37	u8 zone_size_shift;
	38	u32 nr_zones;
ea6f8ddc	39	unsigned int max_active_zones;
a7e1ac7b NA	40	/*
	41	* Reserved active zones for one metadata and one system block group.
	42	* It can vary per-device depending on the allocation status.
	43	*/
	44	int reserved_active_zones;
ea6f8ddc	45	atomic_t active_zones_left;
5b316468 NA	46	unsigned long *seq_zones;
5b316468 NA	47	unsigned long *empty_zones;
ea6f8ddc	48	unsigned long *active_zones;
16beac87	49	struct blk_zone *zone_cache;
12659251	50	struct blk_zone sb_zones[2 * BTRFS_SUPER_MIRROR_MAX];
5b316468 NA	51	};
5b316468 NA	52
71df088c CH	53	void btrfs_finish_ordered_zoned(struct btrfs_ordered_extent *ordered);
71df088c CH	54
5b316468	55	#ifdef CONFIG_BLK_DEV_ZONED
73651042	56	int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info);
16beac87	57	int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache);
5b316468	58	void btrfs_destroy_dev_zone_info(struct btrfs_device *device);
21e61ec6	59	struct btrfs_zoned_device_info btrfs_clone_dev_zone_info(struct btrfs_device orig_dev);
b70f5097	60	int btrfs_check_zoned_mode(struct btrfs_fs_info *fs_info);
c3ece6b7 QW	61	int btrfs_check_mountopts_zoned(const struct btrfs_fs_info *info,
c3ece6b7 QW	62	unsigned long long *mount_opt);
12659251 NA	63	int btrfs_sb_log_location_bdev(struct block_device *bdev, int mirror, int rw,
	64	u64 *bytenr_ret);
	65	int btrfs_sb_log_location(struct btrfs_device *device, int mirror, int rw,
	66	u64 *bytenr_ret);
8376d9e1	67	int btrfs_advance_sb_log(struct btrfs_device *device, int mirror);
12659251	68	int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror);
1cd6121f NA	69	u64 btrfs_find_allocatable_zones(struct btrfs_device *device, u64 hole_start,
	70	u64 hole_end, u64 num_bytes);
	71	int btrfs_reset_device_zone(struct btrfs_device *device, u64 physical,
	72	u64 length, u64 *bytes);
	73	int btrfs_ensure_empty_zones(struct btrfs_device *device, u64 start, u64 size);
a94794d5	74	int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new);
169e0da9	75	void btrfs_calc_zone_unusable(struct btrfs_block_group *cache);
921603c7	76	bool btrfs_use_zone_append(struct btrfs_bio *bbio);
69ccf3f4	77	void btrfs_record_physical_zoned(struct btrfs_bio *bbio);
2ad8c051 NA	78	int btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
2ad8c051 NA	79	struct btrfs_eb_write_context *ctx);
de17addc	80	int btrfs_zoned_issue_zeroout(struct btrfs_device *device, u64 physical, u64 length);
7db1c5d1 NA	81	int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev, u64 logical,
7db1c5d1 NA	82	u64 physical_start, u64 physical_pos);
afba2bc0 NA	83	bool btrfs_zone_activate(struct btrfs_block_group *block_group);
afba2bc0 NA	84	int btrfs_zone_finish(struct btrfs_block_group *block_group);
82187d2e	85	bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices, u64 flags);
be1a1d7a NA	86	void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info, u64 logical,
be1a1d7a NA	87	u64 length);
56fbb0a4 NA	88	void btrfs_schedule_zone_finish_bg(struct btrfs_block_group *bg,
56fbb0a4 NA	89	struct extent_buffer *eb);
c2707a25	90	void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg);
16beac87	91	void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info);
ca283ea9	92	bool btrfs_zoned_should_reclaim(const struct btrfs_fs_info *fs_info);
343d8a30 NA	93	void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info, u64 logical,
343d8a30 NA	94	u64 length);
393f646e	95	int btrfs_zone_finish_one_bg(struct btrfs_fs_info *fs_info);
b0931513 NA	96	int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info,
b0931513 NA	97	struct btrfs_space_info *space_info, bool do_finish);
a7e1ac7b	98	void btrfs_check_active_zone_reservation(struct btrfs_fs_info *fs_info);
453a73c3	99	int btrfs_reset_unused_block_groups(struct btrfs_space_info *space_info, u64 num_bytes);
5b316468	100	#else /* CONFIG_BLK_DEV_ZONED */
5b316468	101
73651042 NA	102	static inline int btrfs_get_dev_zone_info_all_devices(struct btrfs_fs_info *fs_info)
	103	{
	104	return 0;
	105	}
	106
16beac87 NA	107	static inline int btrfs_get_dev_zone_info(struct btrfs_device *device,
16beac87 NA	108	bool populate_cache)
5b316468 NA	109	{
	110	return 0;
	111	}
	112
	113	static inline void btrfs_destroy_dev_zone_info(struct btrfs_device *device) { }
	114
21e61ec6 JT	115	/*
	116	* In case the kernel is compiled without CONFIG_BLK_DEV_ZONED we'll never call
	117	* into btrfs_clone_dev_zone_info() so it's safe to return NULL here.
	118	*/
	119	static inline struct btrfs_zoned_device_info *btrfs_clone_dev_zone_info(
	120	struct btrfs_device *orig_dev)
	121	{
	122	return NULL;
	123	}
	124
b70f5097 NA	125	static inline int btrfs_check_zoned_mode(const struct btrfs_fs_info *fs_info)
	126	{
	127	if (!btrfs_is_zoned(fs_info))
	128	return 0;
	129
	130	btrfs_err(fs_info, "zoned block devices support is not enabled");
	131	return -EOPNOTSUPP;
	132	}
	133
2917f741	134	static inline int btrfs_check_mountopts_zoned(const struct btrfs_fs_info *info,
c3ece6b7	135	unsigned long long *mount_opt)
5d1ab66c NA	136	{
	137	return 0;
	138	}
	139
12659251 NA	140	static inline int btrfs_sb_log_location_bdev(struct block_device *bdev,
	141	int mirror, int rw, u64 *bytenr_ret)
	142	{
	143	*bytenr_ret = btrfs_sb_offset(mirror);
	144	return 0;
	145	}
	146
	147	static inline int btrfs_sb_log_location(struct btrfs_device *device, int mirror,
	148	int rw, u64 *bytenr_ret)
	149	{
	150	*bytenr_ret = btrfs_sb_offset(mirror);
	151	return 0;
	152	}
	153
8376d9e1 NA	154	static inline int btrfs_advance_sb_log(struct btrfs_device *device, int mirror)
	155	{
	156	return 0;
	157	}
12659251 NA	158
	159	static inline int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror)
	160	{
	161	return 0;
	162	}
	163
1cd6121f NA	164	static inline u64 btrfs_find_allocatable_zones(struct btrfs_device *device,
	165	u64 hole_start, u64 hole_end,
	166	u64 num_bytes)
	167	{
	168	return hole_start;
	169	}
	170
	171	static inline int btrfs_reset_device_zone(struct btrfs_device *device,
	172	u64 physical, u64 length, u64 *bytes)
	173	{
	174	*bytes = 0;
	175	return 0;
	176	}
	177
	178	static inline int btrfs_ensure_empty_zones(struct btrfs_device *device,
	179	u64 start, u64 size)
	180	{
	181	return 0;
	182	}
	183
08e11a3d	184	static inline int btrfs_load_block_group_zone_info(
a94794d5	185	struct btrfs_block_group *cache, bool new)
08e11a3d NA	186	{
	187	return 0;
	188	}
	189
169e0da9 NA	190	static inline void btrfs_calc_zone_unusable(struct btrfs_block_group *cache) { }
169e0da9 NA	191
921603c7	192	static inline bool btrfs_use_zone_append(struct btrfs_bio *bbio)
08f45559 JT	193	{
	194	return false;
	195	}
d8e3fb10	196
69ccf3f4	197	static inline void btrfs_record_physical_zoned(struct btrfs_bio *bbio)
d8e3fb10 NA	198	{
	199	}
	200
2ad8c051 NA	201	static inline int btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,
2ad8c051 NA	202	struct btrfs_eb_write_context *ctx)
0bc09ca1	203	{
2ad8c051	204	return 0;
0bc09ca1 NA	205	}
0bc09ca1 NA	206
de17addc NA	207	static inline int btrfs_zoned_issue_zeroout(struct btrfs_device *device,
	208	u64 physical, u64 length)
	209	{
	210	return -EOPNOTSUPP;
	211	}
	212
7db1c5d1 NA	213	static inline int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev,
	214	u64 logical, u64 physical_start,
	215	u64 physical_pos)
	216	{
	217	return -EOPNOTSUPP;
	218	}
	219
afba2bc0 NA	220	static inline bool btrfs_zone_activate(struct btrfs_block_group *block_group)
	221	{
	222	return true;
	223	}
	224
	225	static inline int btrfs_zone_finish(struct btrfs_block_group *block_group)
	226	{
	227	return 0;
	228	}
	229
a85f05e5	230	static inline bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices,
82187d2e	231	u64 flags)
a85f05e5 NA	232	{
	233	return true;
	234	}
	235
be1a1d7a NA	236	static inline void btrfs_zone_finish_endio(struct btrfs_fs_info *fs_info,
	237	u64 logical, u64 length) { }
	238
56fbb0a4 NA	239	static inline void btrfs_schedule_zone_finish_bg(struct btrfs_block_group *bg,
	240	struct extent_buffer *eb) { }
	241
c2707a25 JT	242	static inline void btrfs_clear_data_reloc_bg(struct btrfs_block_group *bg) { }
c2707a25 JT	243
16beac87	244	static inline void btrfs_free_zone_cache(struct btrfs_fs_info *fs_info) { }
3687fcb0	245
ca283ea9	246	static inline bool btrfs_zoned_should_reclaim(const struct btrfs_fs_info *fs_info)
3687fcb0 JT	247	{
	248	return false;
	249	}
343d8a30 NA	250
	251	static inline void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info,
	252	u64 logical, u64 length) { }
393f646e NA	253
	254	static inline int btrfs_zone_finish_one_bg(struct btrfs_fs_info *fs_info)
	255	{
	256	return 1;
	257	}
	258
b0931513 NA	259	static inline int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info,
	260	struct btrfs_space_info *space_info,
	261	bool do_finish)
	262	{
	263	/* Consider all the block groups are active */
	264	return 0;
	265	}
	266
a7e1ac7b NA	267	static inline void btrfs_check_active_zone_reservation(struct btrfs_fs_info *fs_info) { }
a7e1ac7b NA	268
453a73c3 NA	269	static inline int btrfs_reset_unused_block_groups(struct btrfs_space_info *space_info,
	270	u64 num_bytes)
	271	{
	272	return 0;
	273	}
	274
5b316468 NA	275	#endif
	276
	277	static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos)
	278	{
	279	struct btrfs_zoned_device_info *zone_info = device->zone_info;
	280
	281	if (!zone_info)
	282	return false;
	283
	284	return test_bit(pos >> zone_info->zone_size_shift, zone_info->seq_zones);
	285	}
	286
	287	static inline bool btrfs_dev_is_empty_zone(struct btrfs_device *device, u64 pos)
	288	{
	289	struct btrfs_zoned_device_info *zone_info = device->zone_info;
	290
	291	if (!zone_info)
	292	return true;
	293
	294	return test_bit(pos >> zone_info->zone_size_shift, zone_info->empty_zones);
	295	}
	296
	297	static inline void btrfs_dev_set_empty_zone_bit(struct btrfs_device *device,
	298	u64 pos, bool set)
	299	{
	300	struct btrfs_zoned_device_info *zone_info = device->zone_info;
	301	unsigned int zno;
	302
	303	if (!zone_info)
	304	return;
	305
	306	zno = pos >> zone_info->zone_size_shift;
	307	if (set)
	308	set_bit(zno, zone_info->empty_zones);
	309	else
	310	clear_bit(zno, zone_info->empty_zones);
	311	}
	312
	313	static inline void btrfs_dev_set_zone_empty(struct btrfs_device *device, u64 pos)
	314	{
	315	btrfs_dev_set_empty_zone_bit(device, pos, true);
	316	}
	317
	318	static inline void btrfs_dev_clear_zone_empty(struct btrfs_device *device, u64 pos)
	319	{
	320	btrfs_dev_set_empty_zone_bit(device, pos, false);
	321	}
	322
b70f5097 NA	323	static inline bool btrfs_check_device_zone_type(const struct btrfs_fs_info *fs_info,
	324	struct block_device *bdev)
	325	{
b70f5097	326	if (btrfs_is_zoned(fs_info)) {
3c9daa09 JT	327	/*
	328	* We can allow a regular device on a zoned filesystem, because
	329	* we will emulate the zoned capabilities.
	330	*/
	331	if (!bdev_is_zoned(bdev))
	332	return true;
	333
	334	return fs_info->zone_size ==
	335	(bdev_zone_sectors(bdev) << SECTOR_SHIFT);
b70f5097 NA	336	}
b70f5097 NA	337
eefaf0a1	338	/* Do not allow Host Managed zoned device. */
7437bb73	339	return !bdev_is_zoned(bdev);
b70f5097 NA	340	}
b70f5097 NA	341
12659251 NA	342	static inline bool btrfs_check_super_location(struct btrfs_device *device, u64 pos)
	343	{
	344	/*
	345	* On a non-zoned device, any address is OK. On a zoned device,
	346	* non-SEQUENTIAL WRITE REQUIRED zones are capable.
	347	*/
	348	return device->zone_info == NULL \|\| !btrfs_dev_is_sequential(device, pos);
	349	}
	350
dcba6e48 NA	351	static inline bool btrfs_can_zone_reset(struct btrfs_device *device,
	352	u64 physical, u64 length)
	353	{
	354	u64 zone_size;
	355
	356	if (!btrfs_dev_is_sequential(device, physical))
	357	return false;
	358
	359	zone_size = device->zone_info->zone_size;
	360	if (!IS_ALIGNED(physical, zone_size) \|\| !IS_ALIGNED(length, zone_size))
	361	return false;
	362
	363	return true;
	364	}
	365
0bc09ca1 NA	366	static inline void btrfs_zoned_meta_io_lock(struct btrfs_fs_info *fs_info)
	367	{
	368	if (!btrfs_is_zoned(fs_info))
	369	return;
	370	mutex_lock(&fs_info->zoned_meta_io_lock);
	371	}
	372
	373	static inline void btrfs_zoned_meta_io_unlock(struct btrfs_fs_info *fs_info)
	374	{
	375	if (!btrfs_is_zoned(fs_info))
	376	return;
	377	mutex_unlock(&fs_info->zoned_meta_io_lock);
	378	}
	379
40ab3be1 NA	380	static inline void btrfs_clear_treelog_bg(struct btrfs_block_group *bg)
	381	{
	382	struct btrfs_fs_info *fs_info = bg->fs_info;
	383
	384	if (!btrfs_is_zoned(fs_info))
	385	return;
	386
	387	spin_lock(&fs_info->treelog_bg_lock);
	388	if (fs_info->treelog_bg == bg->start)
	389	fs_info->treelog_bg = 0;
	390	spin_unlock(&fs_info->treelog_bg_lock);
	391	}
	392
869f4cdc JT	393	static inline void btrfs_zoned_data_reloc_lock(struct btrfs_inode *inode)
	394	{
	395	struct btrfs_root *root = inode->root;
	396
	397	if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
5f0addf7	398	mutex_lock(&root->fs_info->zoned_data_reloc_io_lock);
869f4cdc JT	399	}
	400
	401	static inline void btrfs_zoned_data_reloc_unlock(struct btrfs_inode *inode)
	402	{
	403	struct btrfs_root *root = inode->root;
	404
	405	if (btrfs_is_data_reloc_root(root) && btrfs_is_zoned(root->fs_info))
5f0addf7	406	mutex_unlock(&root->fs_info->zoned_data_reloc_io_lock);
869f4cdc JT	407	}
869f4cdc JT	408
1bfd4767 NA	409	static inline bool btrfs_zoned_bg_is_full(const struct btrfs_block_group *bg)
	410	{
	411	ASSERT(btrfs_is_zoned(bg->fs_info));
	412	return (bg->alloc_offset == bg->zone_capacity);
	413	}
	414
5b316468	415	#endif