415 lines
12 KiB
C
415 lines
12 KiB
C
/* 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(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, unsigned 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(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,
|
|
unsigned 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(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 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
|