diff options
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 71317047c321..533c5ea0e8c0 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -101,6 +101,14 @@ struct btrfs_ref; #define BTRFS_MAX_EXTENT_SIZE SZ_128M +/* + * 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. + */ +#define BTRFS_STAT_NR_ENTRIES 2 +#define BTRFS_STAT_CURR 0 +#define BTRFS_STAT_PREV 1 /* * Count how many BTRFS_MAX_EXTENT_SIZE cover the @size @@ -458,6 +466,7 @@ struct btrfs_discard_ctl { spinlock_t lock; struct btrfs_block_group *block_group; struct list_head discard_list[BTRFS_NR_DISCARD_LISTS]; + atomic_t discardable_extents; }; /* delayed seq elem */ |