#include <linux/blkdev.h>
#include "volumes.h"
#include "disk-io.h"
+#include "block-group.h"
struct btrfs_zoned_device_info {
/*
#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);
void btrfs_destroy_dev_zone_info(struct btrfs_device *device);
int btrfs_check_zoned_mode(struct btrfs_fs_info *fs_info);
u64 *bytenr_ret);
void 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, struct extent_map *em);
+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);
#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)
{
return 0;
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,
+ struct extent_map *em)
+{
+ 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;
+}
+
#endif
static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos)
static inline bool btrfs_check_device_zone_type(const struct btrfs_fs_info *fs_info,
struct block_device *bdev)
{
- u64 zone_size;
-
if (btrfs_is_zoned(fs_info)) {
- zone_size = bdev_zone_sectors(bdev) << SECTOR_SHIFT;
- /* Do not allow non-zoned device */
- return bdev_is_zoned(bdev) && fs_info->zone_size == zone_size;
+ /*
+ * 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 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);
+}
+
#endif
projects / linux-2.6-microblaze.git / blobdiff