diff options
Diffstat (limited to 'fs/btrfs/free-space-cache.h')
| -rw-r--r-- | fs/btrfs/free-space-cache.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/btrfs/free-space-cache.h b/fs/btrfs/free-space-cache.h index 6d419ba53e95..a855e0483e03 100644 --- a/fs/btrfs/free-space-cache.h +++ b/fs/btrfs/free-space-cache.h @@ -43,6 +43,17 @@ static inline bool btrfs_free_space_trimming_bitmap( return (info->trim_state == BTRFS_TRIM_STATE_TRIMMING); } +/* + * Deltas are an effective way to populate global statistics. Give macro names + * to make it clear what we're doing. An example is discard_extents in + * btrfs_free_space_ctl. + */ +enum { + BTRFS_STAT_CURR, + BTRFS_STAT_PREV, + BTRFS_STAT_NR_ENTRIES, +}; + struct btrfs_free_space_ctl { spinlock_t tree_lock; struct rb_root free_space_offset; @@ -79,6 +90,8 @@ struct btrfs_io_ctl { int bitmaps; }; +int __init btrfs_free_space_init(void); +void __cold btrfs_free_space_exit(void); struct inode *lookup_free_space_inode(struct btrfs_block_group *block_group, struct btrfs_path *path); int create_free_space_inode(struct btrfs_trans_handle *trans, |