#include <linux/backing-dev.h>
#include <linux/wait.h>
#include <asm/kmap_types.h>
-#include "bit-radix.h"
#include "extent_io.h"
#include "extent_map.h"
#include "async-thread.h"
extern struct kmem_cache *btrfs_path_cachep;
struct btrfs_ordered_sum;
-#define BTRFS_MAGIC "_B8RfS_M"
+#define BTRFS_MAGIC "_BBRfS_M"
#define BTRFS_ACL_NOT_CACHED ((void *)-1)
#define BTRFS_TREE_LOG_OBJECTID -6ULL
#define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL
+/* for space balancing */
+#define BTRFS_TREE_RELOC_OBJECTID -8ULL
+#define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL
+
+/* dummy objectid represents multiple objectids */
+#define BTRFS_MULTIPLE_OBJECTIDS -255ULL
+
/*
- * All files have objectids higher than this.
+ * All files have objectids in this range.
*/
#define BTRFS_FIRST_FREE_OBJECTID 256ULL
+#define BTRFS_LAST_FREE_OBJECTID -256ULL
#define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL
__le64 root;
__le64 generation;
__le64 objectid;
- __le64 offset;
+ __le32 num_refs;
} __attribute__ ((__packed__));
/* dev extents record free space on individual devices. The owner
/* transid that last touched this inode */
__le64 transid;
__le64 size;
- __le64 nblocks;
+ __le64 nbytes;
__le64 block_group;
__le32 nlink;
__le32 uid;
#define BTRFS_BLOCK_GROUP_DUP (1 << 5)
#define BTRFS_BLOCK_GROUP_RAID10 (1 << 6)
-
struct btrfs_block_group_item {
__le64 used;
__le64 chunk_objectid;
u64 total_bytes;
u64 bytes_used;
u64 bytes_pinned;
+ u64 bytes_reserved;
int full;
int force_alloc;
struct list_head list;
+
+ /* for block groups in our same type */
+ struct list_head block_groups;
+ spinlock_t lock;
+};
+
+struct btrfs_free_space {
+ struct rb_node bytes_index;
+ struct rb_node offset_index;
+ u64 offset;
+ u64 bytes;
};
struct btrfs_block_group_cache {
struct btrfs_key key;
struct btrfs_block_group_item item;
- struct btrfs_space_info *space_info;
spinlock_t lock;
u64 pinned;
+ u64 reserved;
u64 flags;
int cached;
int ro;
+ int dirty;
+
+ struct btrfs_space_info *space_info;
+
+ /* free space cache stuff */
+ struct rb_root free_space_bytes;
+ struct rb_root free_space_offset;
+
+ /* block group cache stuff */
+ struct rb_node cache_node;
+
+ /* for block groups in the same raid type */
+ struct list_head list;
+};
+
+struct btrfs_leaf_ref_tree {
+ struct rb_root root;
+ struct list_head list;
+ spinlock_t lock;
};
struct btrfs_device;
struct btrfs_root *log_root_tree;
struct radix_tree_root fs_roots_radix;
- struct extent_io_tree free_space_cache;
- struct extent_io_tree block_group_cache;
+ /* block group cache stuff */
+ spinlock_t block_group_cache_lock;
+ struct rb_root block_group_cache_tree;
+
struct extent_io_tree pinned_extents;
struct extent_io_tree pending_del;
struct extent_io_tree extent_ins;
struct mutex chunk_mutex;
struct mutex drop_mutex;
struct mutex volume_mutex;
+ struct mutex tree_reloc_mutex;
struct list_head trans_list;
struct list_head hashers;
struct list_head dead_roots;
atomic_t nr_async_submits;
+ atomic_t async_submit_draining;
atomic_t nr_async_bios;
atomic_t tree_log_writers;
atomic_t tree_log_commit;
struct task_struct *cleaner_kthread;
int thread_pool_size;
+ /* tree relocation relocated fields */
+ struct extent_io_tree reloc_mapping_tree;
+ struct list_head dead_reloc_roots;
+ struct btrfs_leaf_ref_tree reloc_ref_tree;
+ struct btrfs_leaf_ref_tree shared_ref_tree;
+
struct kobject super_kobj;
struct completion kobj_unregister;
int do_barriers;
u64 delalloc_bytes;
u64 last_alloc;
u64 last_data_alloc;
- u64 last_log_alloc;
spinlock_t ref_cache_lock;
u64 total_ref_cache_size;
void *bdev_holder;
};
-struct btrfs_leaf_ref_tree {
- struct rb_root root;
- struct btrfs_leaf_ref *last;
- struct list_head list;
- spinlock_t lock;
-};
-
/*
* in ram representation of the tree. extent_root is used for all allocations
* and for the extent tree extent_root root.
struct btrfs_leaf_ref_tree ref_tree_struct;
struct btrfs_dirty_root *dirty_root;
struct btrfs_root *log_root;
+ struct btrfs_root *reloc_root;
struct btrfs_root_item root_item;
struct btrfs_key root_key;
struct btrfs_fs_info *fs_info;
struct inode *inode;
+ struct extent_io_tree dirty_log_pages;
+
struct kobject root_kobj;
struct completion kobj_unregister;
struct mutex objectid_mutex;
BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64);
BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64);
BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64);
-BTRFS_SETGET_FUNCS(inode_nblocks, struct btrfs_inode_item, nblocks, 64);
+BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64);
BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64);
BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32);
BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32);
BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64);
BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32);
-/* struct btrfs_extent_item */
-BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32);
-
/* struct btrfs_dev_extent */
BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent,
chunk_tree, 64);
BTRFS_SETGET_FUNCS(ref_root, struct btrfs_extent_ref, root, 64);
BTRFS_SETGET_FUNCS(ref_generation, struct btrfs_extent_ref, generation, 64);
BTRFS_SETGET_FUNCS(ref_objectid, struct btrfs_extent_ref, objectid, 64);
-BTRFS_SETGET_FUNCS(ref_offset, struct btrfs_extent_ref, offset, 64);
+BTRFS_SETGET_FUNCS(ref_num_refs, struct btrfs_extent_ref, num_refs, 32);
BTRFS_SETGET_STACK_FUNCS(stack_ref_root, struct btrfs_extent_ref, root, 64);
BTRFS_SETGET_STACK_FUNCS(stack_ref_generation, struct btrfs_extent_ref,
generation, 64);
BTRFS_SETGET_STACK_FUNCS(stack_ref_objectid, struct btrfs_extent_ref,
objectid, 64);
-BTRFS_SETGET_STACK_FUNCS(stack_ref_offset, struct btrfs_extent_ref, offset, 64);
+BTRFS_SETGET_STACK_FUNCS(stack_ref_num_refs, struct btrfs_extent_ref,
+ num_refs, 32);
+/* struct btrfs_extent_item */
+BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32);
BTRFS_SETGET_STACK_FUNCS(stack_extent_refs, struct btrfs_extent_item,
refs, 32);
((unsigned long)(btrfs_leaf_data(leaf) + \
btrfs_item_offset_nr(leaf, slot)))
-static inline struct dentry *fdentry(struct file *file) {
-#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
- return file->f_dentry;
-#else
+static inline struct dentry *fdentry(struct file *file)
+{
return file->f_path.dentry;
-#endif
}
/* extent-tree.c */
-int btrfs_lookup_extent(struct btrfs_root *root, struct btrfs_path *path,
- u64 start, u64 len);
+int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len);
+int btrfs_lookup_extent_ref(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u64 bytenr,
+ u64 num_bytes, u32 *refs);
int btrfs_update_pinned_extents(struct btrfs_root *root,
u64 bytenr, u64 num, int pin);
int btrfs_drop_leaf_ref(struct btrfs_trans_handle *trans,
int data, int owner);
struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
- u32 blocksize,
+ u32 blocksize, u64 parent,
u64 root_objectid,
u64 ref_generation,
- u64 first_objectid,
int level,
u64 hint,
u64 empty_size);
struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 bytenr, u32 blocksize);
-int btrfs_shrink_extent_tree(struct btrfs_root *root, u64 new_size);
-int btrfs_insert_extent_backref(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path, u64 bytenr,
- u64 root_objectid, u64 ref_generation,
- u64 owner, u64 owner_offset);
int btrfs_alloc_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
- u64 num_bytes, u64 min_bytes,
+ u64 num_bytes, u64 parent, u64 min_bytes,
u64 root_objectid, u64 ref_generation,
- u64 owner, u64 owner_offset,
- u64 empty_size, u64 hint_byte,
+ u64 owner, u64 empty_size, u64 hint_byte,
u64 search_end, struct btrfs_key *ins, u64 data);
int btrfs_alloc_reserved_extent(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
+ struct btrfs_root *root, u64 parent,
u64 root_objectid, u64 ref_generation,
- u64 owner, u64 owner_offset,
- struct btrfs_key *ins);
+ u64 owner, struct btrfs_key *ins);
int btrfs_alloc_logged_extent(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
+ struct btrfs_root *root, u64 parent,
u64 root_objectid, u64 ref_generation,
- u64 owner, u64 owner_offset,
- struct btrfs_key *ins);
+ u64 owner, struct btrfs_key *ins);
int btrfs_reserve_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 num_bytes, u64 min_alloc_size,
u64 search_end, struct btrfs_key *ins,
u64 data);
int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
- struct extent_buffer *buf, int cache_ref);
-int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
- *root, u64 bytenr, u64 num_bytes,
+ struct extent_buffer *orig_buf, struct extent_buffer *buf,
+ u32 *nr_extents);
+int btrfs_cache_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
+ struct extent_buffer *buf, u32 nr_extents);
+int btrfs_update_ref(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, struct extent_buffer *orig_buf,
+ struct extent_buffer *buf, int start_slot, int nr);
+int btrfs_free_extent(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ u64 bytenr, u64 num_bytes, u64 parent,
u64 root_objectid, u64 ref_generation,
- u64 owner_objectid, u64 owner_offset, int pin);
+ u64 owner_objectid, int pin);
int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len);
int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct extent_io_tree *unpin);
int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- u64 bytenr, u64 num_bytes,
- u64 root_objectid, u64 ref_generation,
- u64 owner, u64 owner_offset);
+ struct btrfs_root *root,
+ u64 bytenr, u64 num_bytes, u64 parent,
+ u64 root_objectid, u64 ref_generation,
+ u64 owner_objectid);
+int btrfs_update_extent_ref(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u64 bytenr,
+ u64 orig_parent, u64 parent,
+ u64 root_objectid, u64 ref_generation,
+ u64 owner_objectid);
int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
int btrfs_free_block_groups(struct btrfs_fs_info *info);
struct btrfs_root *root, u64 bytes_used,
u64 type, u64 chunk_objectid, u64 chunk_offset,
u64 size);
+int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u64 group_start);
+int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start);
+int btrfs_free_reloc_root(struct btrfs_root *root);
+int btrfs_drop_dead_reloc_roots(struct btrfs_root *root);
+int btrfs_add_reloc_mapping(struct btrfs_root *root, u64 orig_bytenr,
+ u64 num_bytes, u64 new_bytenr);
+int btrfs_get_reloc_mapping(struct btrfs_root *root, u64 orig_bytenr,
+ u64 num_bytes, u64 *new_bytenr);
+void btrfs_free_reloc_mappings(struct btrfs_root *root);
+int btrfs_reloc_tree_cache_ref(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct extent_buffer *buf, u64 orig_start);
+int btrfs_add_dead_reloc_root(struct btrfs_root *root);
+int btrfs_cleanup_reloc_trees(struct btrfs_root *root);
/* ctree.c */
int btrfs_previous_item(struct btrfs_root *root,
struct btrfs_path *path, u64 min_objectid,
int type);
-
+int btrfs_merge_path(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct btrfs_key *node_keys,
+ u64 *nodes, int lowest_level);
+int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, struct btrfs_path *path,
+ struct btrfs_key *new_key);
struct extent_buffer *btrfs_root_node(struct btrfs_root *root);
struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root);
int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path,
void btrfs_init_path(struct btrfs_path *p);
int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct btrfs_path *path, int slot, int nr);
-
+int btrfs_del_leaf(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct btrfs_path *path, u64 bytenr);
static inline int btrfs_del_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path)
int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end);
int btrfs_writepages(struct address_space *mapping,
struct writeback_control *wbc);
-int btrfs_create_subvol_root(struct btrfs_root *new_root,
+int btrfs_create_subvol_root(struct btrfs_root *new_root, struct dentry *dentry,
struct btrfs_trans_handle *trans, u64 new_dirid,
struct btrfs_block_group_cache *block_group);
int btrfs_merge_bio_hook(struct page *page, unsigned long offset,
size_t size, struct bio *bio);
-static inline void dec_i_blocks(struct inode *inode, u64 dec)
-{
- dec = dec >> 9;
- if (dec <= inode->i_blocks)
- inode->i_blocks -= dec;
- else
- inode->i_blocks = 0;
-}
-
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_init_cachep(void);
void btrfs_destroy_cachep(void);
long btrfs_ioctl_trans_end(struct file *file);
+struct inode *btrfs_ilookup(struct super_block *s, u64 objectid,
+ struct btrfs_root *root, int wait);
struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid,
struct btrfs_root *root);
-struct inode *btrfs_ilookup(struct super_block *s, u64 objectid,
- u64 root_objectid);
struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
struct btrfs_root *root, int *is_new);
int btrfs_commit_write(struct file *file, struct page *page,
int btrfs_update_inode(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct inode *inode);
+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);
/* ioctl.c */
long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
/* file.c */
int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync);
-int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end);
+int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end,
+ int skip_pinned);
int btrfs_check_file(struct btrfs_root *root, struct inode *inode);
extern struct file_operations btrfs_file_operations;
int btrfs_drop_extents(struct btrfs_trans_handle *trans,
int btrfs_check_acl(struct inode *inode, int mask);
int btrfs_init_acl(struct inode *inode, struct inode *dir);
int btrfs_acl_chmod(struct inode *inode);
+
+/* free-space-cache.c */
+int btrfs_add_free_space(struct btrfs_block_group_cache *block_group,
+ u64 bytenr, u64 size);
+int btrfs_remove_free_space(struct btrfs_block_group_cache *block_group,
+ u64 bytenr, u64 size);
+void btrfs_remove_free_space_cache(struct btrfs_block_group_cache
+ *block_group);
+struct btrfs_free_space *btrfs_find_free_space(struct btrfs_block_group_cache
+ *block_group, u64 offset,
+ u64 bytes);
+void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group,
+ u64 bytes);
+u64 btrfs_block_group_free_space(struct btrfs_block_group_cache *block_group);
#endif
git.openpandora.org / pandora-kernel.git / blobdiff