diff options
Diffstat (limited to 'fs/btrfs/block-group.h')
| -rw-r--r-- | fs/btrfs/block-group.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/fs/btrfs/block-group.h b/fs/btrfs/block-group.h index 9b409676c4b2..107bb557ca8d 100644 --- a/fs/btrfs/block-group.h +++ b/fs/btrfs/block-group.h @@ -13,6 +13,19 @@ enum btrfs_disk_cache_state { }; /* + * This describes the state of the block_group for async discard. This is due + * to the two pass nature of it where extent discarding is prioritized over + * bitmap discarding. BTRFS_DISCARD_RESET_CURSOR is set when we are resetting + * between lists to prevent contention for discard state variables + * (eg. discard_cursor). + */ +enum btrfs_discard_state { + BTRFS_DISCARD_EXTENTS, + BTRFS_DISCARD_BITMAPS, + BTRFS_DISCARD_RESET_CURSOR, +}; + +/* * Control flags for do_chunk_alloc's force field CHUNK_ALLOC_NO_FORCE means to * only allocate a chunk if we really need one. * @@ -116,7 +129,13 @@ struct btrfs_block_group { /* For read-only block groups */ struct list_head ro_list; + /* For discard operations */ atomic_t trimming; + struct list_head discard_list; + int discard_index; + u64 discard_eligible_time; + u64 discard_cursor; + enum btrfs_discard_state discard_state; /* For dirty block groups */ struct list_head dirty_list; @@ -158,6 +177,22 @@ struct btrfs_block_group { struct btrfs_full_stripe_locks_tree full_stripe_locks_root; }; +static inline u64 btrfs_block_group_end(struct btrfs_block_group *block_group) +{ + return (block_group->start + block_group->length); +} + +static inline bool btrfs_is_block_group_data_only( + struct btrfs_block_group *block_group) +{ + /* + * In mixed mode the fragmentation is expected to be high, lowering the + * efficiency, so only proper data block groups are considered. + */ + return (block_group->flags & BTRFS_BLOCK_GROUP_DATA) && + !(block_group->flags & BTRFS_BLOCK_GROUP_METADATA); +} + #ifdef CONFIG_BTRFS_DEBUG static inline int btrfs_should_fragment_free_space( struct btrfs_block_group *block_group) @@ -248,4 +283,9 @@ static inline int btrfs_block_group_done(struct btrfs_block_group *cache) cache->cached == BTRFS_CACHE_ERROR; } +#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS +int btrfs_rmap_block(struct btrfs_fs_info *fs_info, u64 chunk_start, + u64 physical, u64 **logical, int *naddrs, int *stripe_len); +#endif + #endif /* BTRFS_BLOCK_GROUP_H */ |