diff options
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 163 |
1 files changed, 122 insertions, 41 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 746a7248678e..e9bf86415e86 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -34,6 +34,7 @@ struct btrfs_trans_handle; struct btrfs_transaction; +struct btrfs_pending_snapshot; extern struct kmem_cache *btrfs_trans_handle_cachep; extern struct kmem_cache *btrfs_transaction_cachep; extern struct kmem_cache *btrfs_bit_radix_cachep; @@ -663,6 +664,7 @@ struct btrfs_csum_item { #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4) #define BTRFS_BLOCK_GROUP_DUP (1 << 5) #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6) +#define BTRFS_NR_RAID_TYPES 5 struct btrfs_block_group_item { __le64 used; @@ -674,42 +676,46 @@ struct btrfs_space_info { u64 flags; u64 total_bytes; /* total bytes in the space */ - u64 bytes_used; /* total bytes used on disk */ + u64 bytes_used; /* total bytes used, + this does't take mirrors into account */ u64 bytes_pinned; /* total bytes pinned, will be freed when the transaction finishes */ u64 bytes_reserved; /* total bytes the allocator has reserved for current allocations */ u64 bytes_readonly; /* total bytes that are read only */ - u64 bytes_super; /* total bytes reserved for the super blocks */ - u64 bytes_root; /* the number of bytes needed to commit a - transaction */ + u64 bytes_may_use; /* number of bytes that may be used for delalloc/allocations */ - u64 bytes_delalloc; /* number of bytes currently reserved for - delayed allocation */ + u64 disk_used; /* total bytes used on disk */ int full; /* indicates that we cannot allocate any more chunks for this space */ int force_alloc; /* set if we need to force a chunk alloc for this space */ - int force_delalloc; /* make people start doing filemap_flush until - we're under a threshold */ struct list_head list; - /* for controlling how we free up space for allocations */ - wait_queue_head_t allocate_wait; - wait_queue_head_t flush_wait; - int allocating_chunk; - int flushing; - /* for block groups in our same type */ - struct list_head block_groups; + struct list_head block_groups[BTRFS_NR_RAID_TYPES]; spinlock_t lock; struct rw_semaphore groups_sem; atomic_t caching_threads; }; +struct btrfs_block_rsv { + u64 size; + u64 reserved; + u64 freed[2]; + struct btrfs_space_info *space_info; + struct list_head list; + spinlock_t lock; + atomic_t usage; + unsigned int priority:8; + unsigned int durable:1; + unsigned int refill_used:1; + unsigned int full:1; +}; + /* * free clusters are used to claim free space in relatively large chunks, * allowing us to do less seeky writes. They are used for all metadata @@ -760,6 +766,7 @@ struct btrfs_block_group_cache { spinlock_t lock; u64 pinned; u64 reserved; + u64 reserved_pinned; u64 bytes_super; u64 flags; u64 sectorsize; @@ -825,6 +832,22 @@ struct btrfs_fs_info { /* logical->physical extent mapping */ struct btrfs_mapping_tree mapping_tree; + /* block reservation for extent, checksum and root tree */ + struct btrfs_block_rsv global_block_rsv; + /* block reservation for delay allocation */ + struct btrfs_block_rsv delalloc_block_rsv; + /* block reservation for metadata operations */ + struct btrfs_block_rsv trans_block_rsv; + /* block reservation for chunk tree */ + struct btrfs_block_rsv chunk_block_rsv; + + struct btrfs_block_rsv empty_block_rsv; + + /* list of block reservations that cross multiple transactions */ + struct list_head durable_block_rsv_list; + + struct mutex durable_block_rsv_mutex; + u64 generation; u64 last_trans_committed; @@ -927,7 +950,6 @@ struct btrfs_fs_info { struct btrfs_workers endio_meta_write_workers; struct btrfs_workers endio_write_workers; struct btrfs_workers submit_workers; - struct btrfs_workers enospc_workers; /* * fixup workers take dirty pages that didn't properly go through * the cow mechanism and make them safe to write. It happens @@ -943,6 +965,7 @@ struct btrfs_fs_info { int do_barriers; int closing; int log_root_recovering; + int enospc_unlink; u64 total_pinned; @@ -1012,6 +1035,9 @@ struct btrfs_root { struct completion kobj_unregister; struct mutex objectid_mutex; + spinlock_t accounting_lock; + struct btrfs_block_rsv *block_rsv; + struct mutex log_mutex; wait_queue_head_t log_writer_wait; wait_queue_head_t log_commit_wait[2]; @@ -1043,7 +1069,6 @@ struct btrfs_root { int ref_cows; int track_dirty; int in_radix; - int clean_orphans; u64 defrag_trans_start; struct btrfs_key defrag_progress; @@ -1057,8 +1082,11 @@ struct btrfs_root { struct list_head root_list; - spinlock_t list_lock; + spinlock_t orphan_lock; struct list_head orphan_list; + struct btrfs_block_rsv *orphan_block_rsv; + int orphan_item_inserted; + int orphan_cleanup_state; spinlock_t inode_lock; /* red-black tree that keeps track of in-memory inodes */ @@ -1965,6 +1993,9 @@ void btrfs_put_block_group(struct btrfs_block_group_cache *cache); int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, struct btrfs_root *root, unsigned long count); int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); +int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, + struct btrfs_root *root, u64 bytenr, + u64 num_bytes, u64 *refs, u64 *flags); int btrfs_pin_extent(struct btrfs_root *root, u64 bytenr, u64 num, int reserved); int btrfs_drop_leaf_ref(struct btrfs_trans_handle *trans, @@ -1984,10 +2015,10 @@ struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, u64 parent, u64 root_objectid, struct btrfs_disk_key *key, int level, u64 hint, u64 empty_size); -int btrfs_free_tree_block(struct btrfs_trans_handle *trans, - struct btrfs_root *root, - u64 bytenr, u32 blocksize, - u64 parent, u64 root_objectid, int level); +void btrfs_free_tree_block(struct btrfs_trans_handle *trans, + struct btrfs_root *root, + struct extent_buffer *buf, + u64 parent, int last_ref); struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 bytenr, u32 blocksize, @@ -2041,27 +2072,49 @@ int btrfs_make_block_group(struct btrfs_trans_handle *trans, u64 size); int btrfs_remove_block_group(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 group_start); -int btrfs_prepare_block_group_relocation(struct btrfs_root *root, - struct btrfs_block_group_cache *group); - u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags); void btrfs_set_inode_space_info(struct btrfs_root *root, struct inode *ionde); void btrfs_clear_space_info_full(struct btrfs_fs_info *info); - -int btrfs_reserve_metadata_space(struct btrfs_root *root, int num_items); -int btrfs_unreserve_metadata_space(struct btrfs_root *root, int num_items); -int btrfs_unreserve_metadata_for_delalloc(struct btrfs_root *root, - struct inode *inode, int num_items); -int btrfs_reserve_metadata_for_delalloc(struct btrfs_root *root, - struct inode *inode, int num_items); -int btrfs_check_data_free_space(struct btrfs_root *root, struct inode *inode, - u64 bytes); -void btrfs_free_reserved_data_space(struct btrfs_root *root, - struct inode *inode, u64 bytes); -void btrfs_delalloc_reserve_space(struct btrfs_root *root, struct inode *inode, - u64 bytes); -void btrfs_delalloc_free_space(struct btrfs_root *root, struct inode *inode, - u64 bytes); +int btrfs_check_data_free_space(struct inode *inode, u64 bytes); +void btrfs_free_reserved_data_space(struct inode *inode, u64 bytes); +int btrfs_trans_reserve_metadata(struct btrfs_trans_handle *trans, + struct btrfs_root *root, + int num_items, int *retries); +void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, + struct btrfs_root *root); +int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, + struct inode *inode); +void btrfs_orphan_release_metadata(struct inode *inode); +int btrfs_snap_reserve_metadata(struct btrfs_trans_handle *trans, + struct btrfs_pending_snapshot *pending); +int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); +void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); +int btrfs_delalloc_reserve_space(struct inode *inode, u64 num_bytes); +void btrfs_delalloc_release_space(struct inode *inode, u64 num_bytes); +void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv); +struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root); +void btrfs_free_block_rsv(struct btrfs_root *root, + struct btrfs_block_rsv *rsv); +void btrfs_add_durable_block_rsv(struct btrfs_fs_info *fs_info, + struct btrfs_block_rsv *rsv); +int btrfs_block_rsv_add(struct btrfs_trans_handle *trans, + struct btrfs_root *root, + struct btrfs_block_rsv *block_rsv, + u64 num_bytes, int *retries); +int btrfs_block_rsv_check(struct btrfs_trans_handle *trans, + struct btrfs_root *root, + struct btrfs_block_rsv *block_rsv, + u64 min_reserved, int min_factor); +int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, + struct btrfs_block_rsv *dst_rsv, + u64 num_bytes); +void btrfs_block_rsv_release(struct btrfs_root *root, + struct btrfs_block_rsv *block_rsv, + u64 num_bytes); +int btrfs_set_block_group_ro(struct btrfs_root *root, + struct btrfs_block_group_cache *cache); +int btrfs_set_block_group_rw(struct btrfs_root *root, + struct btrfs_block_group_cache *cache); /* ctree.c */ int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, int level, int *slot); @@ -2152,7 +2205,8 @@ static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); -int btrfs_drop_snapshot(struct btrfs_root *root, int update_ref); +int btrfs_drop_snapshot(struct btrfs_root *root, + struct btrfs_block_rsv *block_rsv, int update_ref); int btrfs_drop_subtree(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct extent_buffer *node, @@ -2245,6 +2299,12 @@ int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, const char *name, int name_len, u64 inode_objectid, u64 ref_objectid, u64 *index); +struct btrfs_inode_ref * +btrfs_lookup_inode_ref(struct btrfs_trans_handle *trans, + struct btrfs_root *root, + struct btrfs_path *path, + const char *name, int name_len, + u64 inode_objectid, u64 ref_objectid, int mod); int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct btrfs_path *path, u64 objectid); @@ -2257,6 +2317,8 @@ int btrfs_del_csums(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 bytenr, u64 len); int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, struct bio *bio, u32 *dst); +int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, + struct bio *bio, u64 logical_offset, u32 *dst); int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 objectid, u64 pos, @@ -2311,6 +2373,7 @@ int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, u32 min_type); int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); +int btrfs_start_one_delalloc_inode(struct btrfs_root *root, int delay_iput); int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, struct extent_state **cached_state); int btrfs_writepages(struct address_space *mapping, @@ -2349,10 +2412,20 @@ int btrfs_update_inode(struct btrfs_trans_handle *trans, int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); void btrfs_orphan_cleanup(struct btrfs_root *root); +void btrfs_orphan_pre_snapshot(struct btrfs_trans_handle *trans, + struct btrfs_pending_snapshot *pending, + u64 *bytes_to_reserve); +void btrfs_orphan_post_snapshot(struct btrfs_trans_handle *trans, + struct btrfs_pending_snapshot *pending); +void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, + struct btrfs_root *root); int btrfs_cont_expand(struct inode *inode, loff_t size); int btrfs_invalidate_inodes(struct btrfs_root *root); void btrfs_add_delayed_iput(struct inode *inode); void btrfs_run_delayed_iputs(struct btrfs_root *root); +int btrfs_prealloc_file_range(struct inode *inode, int mode, + u64 start, u64 num_bytes, u64 min_size, + loff_t actual_len, u64 *alloc_hint); extern const struct dentry_operations btrfs_dentry_operations; /* ioctl.c */ @@ -2409,4 +2482,12 @@ int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, struct btrfs_root *root); int btrfs_recover_relocation(struct btrfs_root *root); int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); +void btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, + struct btrfs_root *root, struct extent_buffer *buf, + struct extent_buffer *cow); +void btrfs_reloc_pre_snapshot(struct btrfs_trans_handle *trans, + struct btrfs_pending_snapshot *pending, + u64 *bytes_to_reserve); +void btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, + struct btrfs_pending_snapshot *pending); #endif |