#ifndef __BTRFS__
#define __BTRFS__
+#include <linux/mm.h>
+#include <linux/highmem.h>
#include <linux/fs.h>
#include <linux/workqueue.h>
#include <linux/completion.h>
+#include <asm/kmap_types.h>
#include "bit-radix.h"
#include "extent_map.h"
struct btrfs_header {
u8 csum[BTRFS_CSUM_SIZE];
u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */
- __le64 blocknr; /* which block this node is supposed to live in */
+ __le64 bytenr; /* which block this node is supposed to live in */
__le64 generation;
__le64 owner;
__le32 nritems;
u8 csum[BTRFS_CSUM_SIZE];
/* the first 3 fields must match struct btrfs_header */
u8 fsid[16]; /* FS specific uuid */
- __le64 blocknr; /* this block number */
+ __le64 bytenr; /* this block number */
__le64 magic;
__le64 generation;
__le64 root;
- __le64 total_blocks;
- __le64 blocks_used;
+ __le64 total_bytes;
+ __le64 bytes_used;
__le64 root_dir_objectid;
__le32 sectorsize;
__le32 nodesize;
__le32 leafsize;
+ u8 root_level;
} __attribute__ ((__packed__));
/*
struct btrfs_root_item {
struct btrfs_inode_item inode;
__le64 root_dirid;
- __le64 blocknr;
- __le64 block_limit;
- __le64 blocks_used;
+ __le64 bytenr;
+ __le64 byte_limit;
+ __le64 bytes_used;
__le32 flags;
__le32 refs;
struct btrfs_disk_key drop_progress;
u8 drop_level;
+ u8 level;
} __attribute__ ((__packed__));
#define BTRFS_FILE_EXTENT_REG 0
* disk space consumed by the extent, checksum blocks are included
* in these numbers
*/
- __le64 disk_blocknr;
- __le64 disk_num_blocks;
+ __le64 disk_bytenr;
+ __le64 disk_num_bytes;
/*
* the logical offset in file blocks (no csums)
* this extent record is for. This allows a file extent to point
/*
* the logical number of file blocks (no csums included)
*/
- __le64 num_blocks;
+ __le64 num_bytes;
} __attribute__ ((__packed__));
struct btrfs_csum_item {
} __attribute__ ((__packed__));
/* tag for the radix tree of block groups in ram */
-#define BTRFS_BLOCK_GROUP_DIRTY 0
-#define BTRFS_BLOCK_GROUP_AVAIL 1
#define BTRFS_BLOCK_GROUP_SIZE (256 * 1024 * 1024)
struct btrfs_block_group_cache {
struct btrfs_key key;
struct btrfs_block_group_item item;
- struct radix_tree_root *radix;
- u64 first_free;
- u64 last_alloc;
- u64 pinned;
- u64 last_prealloc;
int data;
int cached;
};
struct btrfs_root *extent_root;
struct btrfs_root *tree_root;
struct radix_tree_root fs_roots_radix;
- struct radix_tree_root pending_del_radix;
- struct radix_tree_root pinned_radix;
- struct radix_tree_root block_group_radix;
- struct radix_tree_root block_group_data_radix;
- struct radix_tree_root extent_map_radix;
- struct radix_tree_root extent_ins_radix;
+
+ struct extent_map_tree free_space_cache;
+ struct extent_map_tree block_group_cache;
+ struct extent_map_tree pinned_extents;
+ struct extent_map_tree pending_del;
+ struct extent_map_tree extent_ins;
+
u64 generation;
u64 last_trans_committed;
struct btrfs_transaction *running_transaction;
struct extent_buffer *sb_buffer;
struct super_block *sb;
struct inode *btree_inode;
+ spinlock_t hash_lock;
struct mutex trans_mutex;
struct mutex fs_mutex;
struct list_head trans_list;
+ struct list_head hashers;
struct list_head dead_roots;
struct delayed_work trans_work;
struct kobject super_kobj;
offsetof(type, member), \
sizeof(((type *)0)->member)))
+#ifndef BTRFS_SETGET_FUNCS
#define BTRFS_SETGET_FUNCS(name, type, member, bits) \
-static inline u##bits btrfs_##name(struct extent_buffer *eb, \
- type *s) \
-{ \
- __le##bits res; \
- read_eb_member(eb, s, type, member, &res); \
- return le##bits##_to_cpu(res); \
-} \
-static inline void btrfs_set_##name(struct extent_buffer *eb, \
- type *s, u##bits val) \
-{ \
- val = cpu_to_le##bits(val); \
- write_eb_member(eb, s, type, member, &val); \
-}
+u##bits btrfs_##name(struct extent_buffer *eb, type *s); \
+void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val);
+#endif
#define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \
static inline u##bits btrfs_##name(struct extent_buffer *eb) \
{ \
- __le##bits res; \
- read_eb_member(eb, NULL, type, member, &res); \
- return le##bits##_to_cpu(res); \
+ char *kaddr = kmap_atomic(eb->first_page, KM_USER0); \
+ unsigned long offset = offsetof(type, member); \
+ u##bits res; \
+ __le##bits *tmp = (__le##bits *)(kaddr + offset); \
+ res = le##bits##_to_cpu(*tmp); \
+ kunmap_atomic(kaddr, KM_USER0); \
+ return res; \
} \
static inline void btrfs_set_##name(struct extent_buffer *eb, \
u##bits val) \
{ \
- val = cpu_to_le##bits(val); \
- write_eb_member(eb, NULL, type, member, &val); \
+ char *kaddr = kmap_atomic(eb->first_page, KM_USER0); \
+ unsigned long offset = offsetof(type, member); \
+ __le##bits *tmp = (__le##bits *)(kaddr + offset); \
+ *tmp = cpu_to_le##bits(val); \
+ kunmap_atomic(kaddr, KM_USER0); \
}
#define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
/* struct btrfs_extent_item */
BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32);
-BTRFS_SETGET_FUNCS(extent_owner, struct btrfs_extent_item, owner, 32);
+BTRFS_SETGET_FUNCS(extent_owner, struct btrfs_extent_item, owner, 64);
BTRFS_SETGET_STACK_FUNCS(stack_extent_refs, struct btrfs_extent_item,
refs, 32);
BTRFS_SETGET_STACK_FUNCS(stack_extent_owner, struct btrfs_extent_item,
- owner, 32);
+ owner, 64);
/* struct btrfs_node */
BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64);
btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val);
}
-static unsigned long btrfs_node_key_ptr_offset(int nr)
+static inline unsigned long btrfs_node_key_ptr_offset(int nr)
{
return offsetof(struct btrfs_node, ptrs) +
sizeof(struct btrfs_key_ptr) * nr;
}
-static void btrfs_node_key(struct extent_buffer *eb,
+static inline void btrfs_node_key(struct extent_buffer *eb,
struct btrfs_disk_key *disk_key, int nr)
{
unsigned long ptr;
}
/* struct btrfs_header */
-BTRFS_SETGET_HEADER_FUNCS(header_blocknr, struct btrfs_header, blocknr, 64);
+BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64);
BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header,
generation, 64);
BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64);
/* struct btrfs_root_item */
BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32);
-BTRFS_SETGET_FUNCS(disk_root_blocknr, struct btrfs_root_item, blocknr, 64);
+BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64);
+BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8);
-BTRFS_SETGET_STACK_FUNCS(root_blocknr, struct btrfs_root_item, blocknr, 64);
+BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64);
+BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8);
BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64);
BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32);
BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 32);
-BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, blocks_used, 64);
-BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, block_limit, 64);
+BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64);
+BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64);
/* struct btrfs_super_block */
-BTRFS_SETGET_STACK_FUNCS(super_blocknr, struct btrfs_super_block, blocknr, 64);
+BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64);
BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block,
generation, 64);
BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64);
-BTRFS_SETGET_STACK_FUNCS(super_total_blocks, struct btrfs_super_block,
- total_blocks, 64);
-BTRFS_SETGET_STACK_FUNCS(super_blocks_used, struct btrfs_super_block,
- blocks_used, 64);
+BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block,
+ root_level, 8);
+BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block,
+ total_bytes, 64);
+BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block,
+ bytes_used, 64);
BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block,
sectorsize, 32);
BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block,
btrfs_file_extent_item *e)
{
unsigned long offset = (unsigned long)e;
- offset += offsetof(struct btrfs_file_extent_item, disk_blocknr);
+ offset += offsetof(struct btrfs_file_extent_item, disk_bytenr);
return offset;
}
static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize)
{
- return offsetof(struct btrfs_file_extent_item, disk_blocknr) + datasize;
+ return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize;
}
static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb,
struct btrfs_item *e)
{
unsigned long offset;
- offset = offsetof(struct btrfs_file_extent_item, disk_blocknr);
+ offset = offsetof(struct btrfs_file_extent_item, disk_bytenr);
return btrfs_item_size(eb, e) - offset;
}
-BTRFS_SETGET_FUNCS(file_extent_disk_blocknr, struct btrfs_file_extent_item,
- disk_blocknr, 64);
+BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item,
+ disk_bytenr, 64);
BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item,
generation, 64);
-BTRFS_SETGET_FUNCS(file_extent_disk_num_blocks, struct btrfs_file_extent_item,
- disk_num_blocks, 64);
+BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item,
+ disk_num_bytes, 64);
BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item,
offset, 64);
-BTRFS_SETGET_FUNCS(file_extent_num_blocks, struct btrfs_file_extent_item,
- num_blocks, 64);
+BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item,
+ num_bytes, 64);
static inline struct btrfs_root *btrfs_sb(struct super_block *sb)
{
return 0;
}
+static inline u32 btrfs_level_size(struct btrfs_root *root, int level) {
+ if (level == 0)
+ return root->leafsize;
+ return root->nodesize;
+}
+
/* helper function to cast into the data area of the leaf. */
#define btrfs_item_ptr(leaf, slot, type) \
((type *)(btrfs_leaf_data(leaf) + \
/* extent-tree.c */
int btrfs_extent_post_op(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
-int btrfs_copy_pinned(struct btrfs_root *root, struct radix_tree_root *copy);
+int btrfs_copy_pinned(struct btrfs_root *root, struct extent_map_tree *copy);
struct btrfs_block_group_cache *btrfs_lookup_block_group(struct
btrfs_fs_info *info,
- u64 blocknr);
+ u64 bytenr);
struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root,
struct btrfs_block_group_cache
*hint, u64 search_start,
int btrfs_inc_root_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, u64 hint,
- u64 empty_size);
+ struct btrfs_root *root, u32 size,
+ u64 hint, u64 empty_size);
int btrfs_alloc_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 owner,
- u64 num_blocks, u64 empty_size, u64 search_start,
+ u64 num_bytes, u64 empty_size, u64 search_start,
u64 search_end, struct btrfs_key *ins, int data);
int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct extent_buffer *buf);
int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
- *root, u64 blocknr, u64 num_blocks, int pin);
+ *root, u64 bytenr, u64 num_bytes, int pin);
int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
- struct radix_tree_root *unpin_radix);
+ struct extent_map_tree *unpin);
int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
- u64 blocknr, u64 num_blocks);
+ u64 bytenr, u64 num_bytes);
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);
ins_len, int cow);
int btrfs_realloc_node(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct extent_buffer *parent,
- int cache_only, u64 *last_ret);
+ int start_slot, int cache_only, u64 *last_ret,
+ struct btrfs_key *progress);
void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p);
struct btrfs_path *btrfs_alloc_path(void);
void btrfs_free_path(struct btrfs_path *p);
int btrfs_insert_file_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 objectid, u64 pos, u64 offset,
- u64 disk_num_blocks,
- u64 num_blocks);
+ u64 disk_num_bytes,
+ u64 num_bytes);
int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path, u64 objectid,
- u64 blocknr, int mod);
+ u64 bytenr, int mod);
int btrfs_csum_file_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
+ struct inode *inode,
u64 objectid, u64 offset,
char *data, size_t len);
struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans,
extern struct file_operations btrfs_file_operations;
int btrfs_drop_extents(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct inode *inode,
- u64 start, u64 end, u64 *hint_block);
+ u64 start, u64 end, u64 inline_end, u64 *hint_block);
/* tree-defrag.c */
int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
struct btrfs_root *root, int cache_only);
projects / linux-2.6-block.git / blobdiff