diff options
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 54 |
1 files changed, 34 insertions, 20 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index fe9287b..03912c5 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -755,6 +755,8 @@ struct btrfs_space_info { chunks for this space */ unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ + unsigned int flush:1; /* set if we are trying to make space */ + unsigned int force_alloc; /* set if we need to force a chunk alloc for this space */ @@ -764,7 +766,7 @@ struct btrfs_space_info { struct list_head block_groups[BTRFS_NR_RAID_TYPES]; spinlock_t lock; struct rw_semaphore groups_sem; - atomic_t caching_threads; + wait_queue_head_t wait; }; struct btrfs_block_rsv { @@ -824,6 +826,7 @@ struct btrfs_caching_control { struct list_head list; struct mutex mutex; wait_queue_head_t wait; + struct btrfs_work work; struct btrfs_block_group_cache *block_group; u64 progress; atomic_t count; @@ -1032,6 +1035,8 @@ struct btrfs_fs_info { struct btrfs_workers endio_write_workers; struct btrfs_workers endio_freespace_worker; struct btrfs_workers submit_workers; + struct btrfs_workers caching_workers; + /* * fixup workers take dirty pages that didn't properly go through * the cow mechanism and make them safe to write. It happens @@ -1410,17 +1415,15 @@ void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ static inline u##bits btrfs_##name(struct extent_buffer *eb) \ { \ - type *p = kmap_atomic(eb->first_page, KM_USER0); \ + type *p = page_address(eb->first_page); \ u##bits res = le##bits##_to_cpu(p->member); \ - kunmap_atomic(p, KM_USER0); \ return res; \ } \ static inline void btrfs_set_##name(struct extent_buffer *eb, \ u##bits val) \ { \ - type *p = kmap_atomic(eb->first_page, KM_USER0); \ + type *p = page_address(eb->first_page); \ p->member = cpu_to_le##bits(val); \ - kunmap_atomic(p, KM_USER0); \ } #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ @@ -2128,7 +2131,7 @@ static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) /* extent-tree.c */ static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root, - int num_items) + unsigned num_items) { return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * 3 * num_items; @@ -2222,9 +2225,6 @@ 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_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); void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, struct btrfs_root *root); int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, @@ -2330,7 +2330,7 @@ struct btrfs_path *btrfs_alloc_path(void); void btrfs_free_path(struct btrfs_path *p); void btrfs_set_path_blocking(struct btrfs_path *p); void btrfs_clear_path_blocking(struct btrfs_path *p, - struct extent_buffer *held); + struct extent_buffer *held, int held_rw); void btrfs_unlock_up_safe(struct btrfs_path *p, int level); int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, @@ -2365,8 +2365,8 @@ 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, - struct btrfs_block_rsv *block_rsv, int update_ref); +void 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, @@ -2404,8 +2404,8 @@ int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct btrfs_root_item *item, struct btrfs_key *key); int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid); int btrfs_find_orphan_roots(struct btrfs_root *tree_root); -int btrfs_set_root_node(struct btrfs_root_item *item, - struct extent_buffer *node); +void btrfs_set_root_node(struct btrfs_root_item *item, + struct extent_buffer *node); void btrfs_check_and_init_root_item(struct btrfs_root_item *item); /* dir-item.c */ @@ -2521,6 +2521,14 @@ struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *pag #define PageChecked PageFsMisc #endif +/* This forces readahead on a given range of bytes in an inode */ +static inline void btrfs_force_ra(struct address_space *mapping, + struct file_ra_state *ra, struct file *file, + pgoff_t offset, unsigned long req_size) +{ + page_cache_sync_readahead(mapping, ra, file, offset, req_size); +} + struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); int btrfs_set_inode_index(struct inode *dir, u64 *index); int btrfs_unlink_inode(struct btrfs_trans_handle *trans, @@ -2549,9 +2557,6 @@ int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, int btrfs_merge_bio_hook(struct page *page, unsigned long offset, size_t size, struct bio *bio, unsigned long bio_flags); -unsigned long btrfs_force_ra(struct address_space *mapping, - struct file_ra_state *ra, struct file *file, - pgoff_t offset, pgoff_t last_index); int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); int btrfs_readpage(struct file *file, struct page *page); void btrfs_evict_inode(struct inode *inode); @@ -2646,12 +2651,21 @@ do { \ /* acl.c */ #ifdef CONFIG_BTRFS_FS_POSIX_ACL struct posix_acl *btrfs_get_acl(struct inode *inode, int type); -#else -#define btrfs_get_acl NULL -#endif int btrfs_init_acl(struct btrfs_trans_handle *trans, struct inode *inode, struct inode *dir); int btrfs_acl_chmod(struct inode *inode); +#else +#define btrfs_get_acl NULL +static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, + struct inode *inode, struct inode *dir) +{ + return 0; +} +static inline int btrfs_acl_chmod(struct inode *inode) +{ + return 0; +} +#endif /* relocation.c */ int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); |