* Boston, MA 021110-1307, USA.
*/
-#ifndef __BTRFS__
-#define __BTRFS__
+#ifndef __BTRFS_CTREE__
+#define __BTRFS_CTREE__
#include <linux/version.h>
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/workqueue.h>
#include <linux/completion.h>
+#include <linux/backing-dev.h>
#include <asm/kmap_types.h>
#include "bit-radix.h"
+#include "extent_io.h"
#include "extent_map.h"
struct btrfs_trans_handle;
extern struct kmem_cache *btrfs_bit_radix_cachep;
extern struct kmem_cache *btrfs_path_cachep;
-#define BTRFS_MAGIC "_B2RfS_M"
+#define BTRFS_MAGIC "_B5RfS_M"
#define BTRFS_MAX_LEVEL 8
+
+/* holds pointers to all of the tree roots */
#define BTRFS_ROOT_TREE_OBJECTID 1ULL
+
+/* stores information about which extents are in use, and reference counts */
#define BTRFS_EXTENT_TREE_OBJECTID 2ULL
-#define BTRFS_FS_TREE_OBJECTID 3ULL
-#define BTRFS_ROOT_TREE_DIR_OBJECTID 4ULL
+
+/*
+ * chunk tree stores translations from logical -> physical block numbering
+ * the super block points to the chunk tree
+ */
+#define BTRFS_CHUNK_TREE_OBJECTID 3ULL
+
+/*
+ * stores information about which areas of a given device are in use.
+ * one per device. The tree of tree roots points to the device tree
+ */
+#define BTRFS_DEV_TREE_OBJECTID 4ULL
+
+/* one per subvolume, storing files and directories */
+#define BTRFS_FS_TREE_OBJECTID 5ULL
+
+/* directory objectid inside the root tree */
+#define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL
+
+/*
+ * All files have objectids higher than this.
+ */
#define BTRFS_FIRST_FREE_OBJECTID 256ULL
+
+/*
+ * the device items go into the chunk tree. The key is in the form
+ * [ 1 BTRFS_DEV_ITEM_KEY device_id ]
+ */
+#define BTRFS_DEV_ITEMS_OBJECTID 1ULL
+
/*
* we can actually store much bigger names, but lets not confuse the rest
* of linux
u64 offset;
} __attribute__ ((__packed__));
+struct btrfs_mapping_tree {
+ struct extent_map_tree map_tree;
+};
+
+#define BTRFS_DEV_UUID_SIZE 16
+struct btrfs_dev_item {
+ /* the internal btrfs device id */
+ __le64 devid;
+
+ /* size of the device */
+ __le64 total_bytes;
+
+ /* bytes used */
+ __le64 bytes_used;
+
+ /* optimal io alignment for this device */
+ __le32 io_align;
+
+ /* optimal io width for this device */
+ __le32 io_width;
+
+ /* minimal io size for this device */
+ __le32 sector_size;
+
+ /* type and info about this device */
+ __le64 type;
+
+ /* btrfs generated uuid for this device */
+ u8 uuid[BTRFS_DEV_UUID_SIZE];
+} __attribute__ ((__packed__));
+
+struct btrfs_stripe {
+ __le64 devid;
+ __le64 offset;
+} __attribute__ ((__packed__));
+
+struct btrfs_chunk {
+ __le64 owner;
+ __le64 stripe_len;
+ __le64 type;
+
+ /* optimal io alignment for this chunk */
+ __le32 io_align;
+
+ /* optimal io width for this chunk */
+ __le32 io_width;
+
+ /* minimal io size for this chunk */
+ __le32 sector_size;
+
+ /* 2^16 stripes is quite a lot, a second limit is the size of a single
+ * item in the btree
+ */
+ __le16 num_stripes;
+ struct btrfs_stripe stripe;
+ /* additional stripes go here */
+} __attribute__ ((__packed__));
+
+static inline unsigned long btrfs_chunk_item_size(int num_stripes)
+{
+ BUG_ON(num_stripes == 0);
+ return sizeof(struct btrfs_chunk) +
+ sizeof(struct btrfs_stripe) * (num_stripes - 1);
+}
+
#define BTRFS_FSID_SIZE 16
/*
* every tree block (leaf or node) starts with this header.
sizeof(struct btrfs_item) - \
sizeof(struct btrfs_file_extent_item))
+
+/*
+ * this is a very generous portion of the super block, giving us
+ * room to translate 14 chunks with 3 stripes each.
+ */
+#define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048
+
/*
* the super block basically lists the main trees of the FS
* it currently lacks any block count etc etc
__le64 magic;
__le64 generation;
__le64 root;
+ __le64 chunk_root;
__le64 total_bytes;
__le64 bytes_used;
__le64 root_dir_objectid;
+ __le64 num_devices;
__le32 sectorsize;
__le32 nodesize;
__le32 leafsize;
__le32 stripesize;
+ __le32 sys_chunk_array_size;
u8 root_level;
+ u8 chunk_root_level;
+ struct btrfs_dev_item dev_item;
+ u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE];
} __attribute__ ((__packed__));
/*
__le64 offset;
} __attribute__ ((__packed__));
+/* dev extents record free space on individual devices. The owner
+ * field points back to the chunk allocation mapping tree that allocated
+ * the extent
+ */
+struct btrfs_dev_extent {
+ __le64 owner;
+ __le64 length;
+} __attribute__ ((__packed__));
+
+
struct btrfs_inode_ref {
__le16 name_len;
/* name goes here */
} __attribute__ ((__packed__));
-struct btrfs_inode_timespec {
+struct btrfs_timespec {
__le64 sec;
__le32 nsec;
} __attribute__ ((__packed__));
__le32 uid;
__le32 gid;
__le32 mode;
- __le32 rdev;
+ __le64 rdev;
__le16 flags;
__le16 compat_flags;
- struct btrfs_inode_timespec atime;
- struct btrfs_inode_timespec ctime;
- struct btrfs_inode_timespec mtime;
- struct btrfs_inode_timespec otime;
+ struct btrfs_timespec atime;
+ struct btrfs_timespec ctime;
+ struct btrfs_timespec mtime;
+ struct btrfs_timespec otime;
} __attribute__ ((__packed__));
struct btrfs_dir_item {
u8 csum;
} __attribute__ ((__packed__));
-/* tag for the radix tree of block groups in ram */
-#define BTRFS_BLOCK_GROUP_SIZE (256 * 1024 * 1024)
+/* different types of block groups (and chunks) */
+#define BTRFS_BLOCK_GROUP_DATA (1 << 0)
+#define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1)
+#define BTRFS_BLOCK_GROUP_METADATA (1 << 2)
+#define BTRFS_BLOCK_GROUP_RAID0 (1 << 3)
-#define BTRFS_BLOCK_GROUP_DATA 1
-#define BTRFS_BLOCK_GROUP_MIXED 2
-
struct btrfs_block_group_item {
__le64 used;
- u8 flags;
+ __le64 chunk_tree;
+ __le64 chunk_objectid;
+ __le64 flags;
} __attribute__ ((__packed__));
+struct btrfs_space_info {
+ u64 flags;
+ u64 total_bytes;
+ u64 bytes_used;
+ u64 bytes_pinned;
+ int full;
+ struct list_head list;
+};
+
struct btrfs_block_group_cache {
struct btrfs_key key;
struct btrfs_block_group_item item;
- int data;
- int cached;
+ struct btrfs_space_info *space_info;
u64 pinned;
+ u64 flags;
+ int cached;
};
+
+struct btrfs_device;
+struct btrfs_fs_devices;
struct btrfs_fs_info {
u8 fsid[BTRFS_FSID_SIZE];
struct btrfs_root *extent_root;
struct btrfs_root *tree_root;
+ struct btrfs_root *chunk_root;
+ struct btrfs_root *dev_root;
struct radix_tree_root fs_roots_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;
+ struct extent_io_tree free_space_cache;
+ struct extent_io_tree block_group_cache;
+ struct extent_io_tree pinned_extents;
+ struct extent_io_tree pending_del;
+ struct extent_io_tree extent_ins;
+
+ /* logical->physical extent mapping */
+ struct btrfs_mapping_tree mapping_tree;
u64 generation;
u64 last_trans_committed;
unsigned long mount_opt;
u64 max_extent;
+ u64 max_inline;
+ u64 alloc_start;
struct btrfs_transaction *running_transaction;
struct btrfs_super_block super_copy;
struct extent_buffer *sb_buffer;
+ struct block_device *__bdev;
struct super_block *sb;
struct inode *btree_inode;
+ struct backing_dev_info bdi;
spinlock_t hash_lock;
struct mutex trans_mutex;
struct mutex fs_mutex;
struct completion kobj_unregister;
int do_barriers;
int closing;
+ unsigned long throttles;
u64 total_pinned;
+ struct list_head dirty_cowonly_roots;
+
+ struct btrfs_fs_devices *fs_devices;
+ struct list_head space_info;
spinlock_t delalloc_lock;
+ spinlock_t new_trans_lock;
u64 delalloc_bytes;
+ u64 last_alloc;
+ u64 last_data_alloc;
+ int extra_data_alloc_bits;
+ int extra_alloc_bits;
};
+
/*
* in ram representation of the tree. extent_root is used for all allocations
* and for the extent tree extent_root root.
struct inode *inode;
struct kobject root_kobj;
struct completion kobj_unregister;
- struct rw_semaphore snap_sem;
u64 objectid;
u64 last_trans;
u64 highest_inode;
u64 last_inode_alloc;
int ref_cows;
+ int track_dirty;
struct btrfs_key defrag_progress;
int defrag_running;
int defrag_level;
char *name;
+ int in_sysfs;
+
+ /* the dirty list is only used by non-reference counted roots */
+ struct list_head dirty_list;
};
/*
+
* inode items have the data typically returned from stat and store other
* info about object characteristics. There is one for every file and dir in
* the FS
*/
#define BTRFS_BLOCK_GROUP_ITEM_KEY 50
+#define BTRFS_DEV_EXTENT_KEY 75
+#define BTRFS_DEV_ITEM_KEY 76
+#define BTRFS_CHUNK_ITEM_KEY 77
+
/*
* string items are for debugging. They just store a short string of
* data in the FS
*/
#define BTRFS_STRING_ITEM_KEY 253
-#define BTRFS_MOUNT_NODATASUM 0x1
-#define BTRFS_MOUNT_NODATACOW 0x2
+#define BTRFS_MOUNT_NODATASUM (1 << 0)
+#define BTRFS_MOUNT_NODATACOW (1 << 1)
+#define BTRFS_MOUNT_NOBARRIER (1 << 2)
+#define BTRFS_MOUNT_SSD (1 << 3)
#define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt)
#define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt)
#define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \
BTRFS_MOUNT_##opt)
-
+/*
+ * Inode flags
+ */
+#define BTRFS_INODE_NODATASUM (1 << 0)
+#define BTRFS_INODE_NODATACOW (1 << 1)
+#define BTRFS_INODE_READONLY (1 << 2)
+#define btrfs_clear_flag(inode, flag) (BTRFS_I(inode)->flags &= \
+ ~BTRFS_INODE_##flag)
+#define btrfs_set_flag(inode, flag) (BTRFS_I(inode)->flags |= \
+ BTRFS_INODE_##flag)
+#define btrfs_test_flag(inode, flag) (BTRFS_I(inode)->flags & \
+ BTRFS_INODE_##flag)
/* some macros to generate set/get funcs for the struct fields. This
* assumes there is a lefoo_to_cpu for every type, so lets make a simple
* one for u8:
#define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \
static inline u##bits btrfs_##name(struct extent_buffer *eb) \
{ \
- 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); \
+ type *p = kmap_atomic(eb->first_page, KM_USER0); \
+ 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) \
{ \
- 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); \
+ type *p = kmap_atomic(eb->first_page, KM_USER0); \
+ p->member = cpu_to_le##bits(val); \
+ kunmap_atomic(p, KM_USER0); \
}
#define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
s->member = cpu_to_le##bits(val); \
}
+BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64);
+BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64);
+BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64);
+BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32);
+BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32);
+BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32);
+BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64);
+
+BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64);
+BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item,
+ total_bytes, 64);
+BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item,
+ bytes_used, 64);
+BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item,
+ io_align, 32);
+BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item,
+ io_width, 32);
+BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item,
+ sector_size, 32);
+BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64);
+
+static inline char *btrfs_device_uuid(struct btrfs_dev_item *d)
+{
+ return (char *)d + offsetof(struct btrfs_dev_item, uuid);
+}
+
+BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64);
+BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64);
+BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32);
+BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32);
+BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32);
+BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64);
+BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16);
+BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64);
+BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64);
+
+BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64);
+BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk,
+ stripe_len, 64);
+BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk,
+ io_align, 32);
+BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk,
+ io_width, 32);
+BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk,
+ sector_size, 32);
+BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64);
+BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk,
+ num_stripes, 16);
+BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64);
+BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64);
+
+static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c,
+ int nr)
+{
+ unsigned long offset = (unsigned long)c;
+ offset += offsetof(struct btrfs_chunk, stripe);
+ offset += nr * sizeof(struct btrfs_stripe);
+ return (struct btrfs_stripe *)offset;
+}
+
+static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb,
+ struct btrfs_chunk *c, int nr)
+{
+ return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr));
+}
+
+static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb,
+ struct btrfs_chunk *c, int nr,
+ u64 val)
+{
+ btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val);
+}
+
+static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb,
+ struct btrfs_chunk *c, int nr)
+{
+ return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr));
+}
+
+static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb,
+ struct btrfs_chunk *c, int nr,
+ u64 val)
+{
+ btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val);
+}
+
/* struct btrfs_block_group_item */
BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item,
used, 64);
BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item,
used, 64);
+BTRFS_SETGET_STACK_FUNCS(block_group_chunk_tree, struct btrfs_block_group_item,
+ chunk_tree, 64);
+BTRFS_SETGET_FUNCS(disk_block_group_chunk_tree, struct btrfs_block_group_item,
+ chunk_tree, 64);
+BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid,
+ struct btrfs_block_group_item, chunk_objectid, 64);
+BTRFS_SETGET_FUNCS(disk_block_group_chunk_objecitd,
+ struct btrfs_block_group_item, chunk_objectid, 64);
+BTRFS_SETGET_FUNCS(disk_block_group_flags,
+ struct btrfs_block_group_item, flags, 64);
+BTRFS_SETGET_STACK_FUNCS(block_group_flags,
+ struct btrfs_block_group_item, flags, 64);
/* struct btrfs_inode_ref */
BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16);
BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32);
BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32);
BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32);
-BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 32);
+BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64);
BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 16);
BTRFS_SETGET_FUNCS(inode_compat_flags, struct btrfs_inode_item,
compat_flags, 16);
-static inline struct btrfs_inode_timespec *
+static inline struct btrfs_timespec *
btrfs_inode_atime(struct btrfs_inode_item *inode_item)
{
unsigned long ptr = (unsigned long)inode_item;
ptr += offsetof(struct btrfs_inode_item, atime);
- return (struct btrfs_inode_timespec *)ptr;
+ return (struct btrfs_timespec *)ptr;
}
-static inline struct btrfs_inode_timespec *
+static inline struct btrfs_timespec *
btrfs_inode_mtime(struct btrfs_inode_item *inode_item)
{
unsigned long ptr = (unsigned long)inode_item;
ptr += offsetof(struct btrfs_inode_item, mtime);
- return (struct btrfs_inode_timespec *)ptr;
+ return (struct btrfs_timespec *)ptr;
}
-static inline struct btrfs_inode_timespec *
+static inline struct btrfs_timespec *
btrfs_inode_ctime(struct btrfs_inode_item *inode_item)
{
unsigned long ptr = (unsigned long)inode_item;
ptr += offsetof(struct btrfs_inode_item, ctime);
- return (struct btrfs_inode_timespec *)ptr;
+ return (struct btrfs_timespec *)ptr;
}
-static inline struct btrfs_inode_timespec *
+static inline struct btrfs_timespec *
btrfs_inode_otime(struct btrfs_inode_item *inode_item)
{
unsigned long ptr = (unsigned long)inode_item;
ptr += offsetof(struct btrfs_inode_item, otime);
- return (struct btrfs_inode_timespec *)ptr;
+ return (struct btrfs_timespec *)ptr;
}
-BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_inode_timespec, sec, 64);
-BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_inode_timespec, nsec, 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_owner, struct btrfs_dev_extent, owner, 64);
+BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64);
+
/* struct btrfs_extent_ref */
BTRFS_SETGET_FUNCS(ref_root, struct btrfs_extent_ref, root, 64);
BTRFS_SETGET_FUNCS(ref_generation, struct btrfs_extent_ref, generation, 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_sys_array_size,
+ struct btrfs_super_block, sys_chunk_array_size, 32);
BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block,
root_level, 8);
+BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block,
+ chunk_root, 64);
+BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block,
+ chunk_root_level, 64);
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,
stripesize, 32);
BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block,
root_dir_objectid, 64);
+BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block,
+ num_devices, 64);
static inline unsigned long btrfs_leaf_data(struct extent_buffer *l)
{
u64 first_extent);
int btrfs_extent_post_op(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
-int btrfs_copy_pinned(struct btrfs_root *root, struct extent_map_tree *copy);
+int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy);
struct btrfs_block_group_cache *btrfs_lookup_block_group(struct
btrfs_fs_info *info,
u64 bytenr);
int level,
u64 hint,
u64 empty_size);
+int btrfs_grow_extent_tree(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u64 new_size);
+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 owner_objectid, u64 owner_offset, int pin);
int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
- struct extent_map_tree *unpin);
+ struct extent_io_tree *unpin);
int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 bytenr, u64 num_bytes,
struct btrfs_root *root);
int btrfs_free_block_groups(struct btrfs_fs_info *info);
int btrfs_read_block_groups(struct btrfs_root *root);
+int btrfs_make_block_group(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u64 bytes_used,
+ u64 type, u64 chunk_tree, u64 chunk_objectid,
+ u64 size);
/* ctree.c */
+int btrfs_previous_item(struct btrfs_root *root,
+ struct btrfs_path *path, u64 min_objectid,
+ int type);
int btrfs_cow_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct extent_buffer *buf,
struct extent_buffer *parent, int parent_slot,
struct btrfs_path *btrfs_alloc_path(void);
void btrfs_free_path(struct btrfs_path *p);
void btrfs_init_path(struct btrfs_path *p);
-int btrfs_del_item(struct btrfs_trans_handle *trans, struct btrfs_root *root,
- struct btrfs_path *path);
+int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
+ struct btrfs_path *path, int slot, int nr);
+
+static inline int btrfs_del_item(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct btrfs_path *path)
+{
+ return btrfs_del_items(trans, root, path, path->slots[0], 1);
+}
+
int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_key *key, void *data, u32 data_size);
-int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, struct btrfs_root
- *root, struct btrfs_path *path, struct btrfs_key
- *cpu_key, u32 data_size);
+int btrfs_insert_empty_items(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct btrfs_path *path,
+ struct btrfs_key *cpu_key, u32 *data_size, int nr);
+
+static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct btrfs_path *path,
+ struct btrfs_key *key,
+ u32 data_size)
+{
+ return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1);
+}
+
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);
struct btrfs_root *root,
struct btrfs_path *path, u64 objectid,
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);
+int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, struct inode *inode,
+ struct bio *bio);
struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
struct btrfs_root *root, struct btrfs_path *path,
u64 isize);
/* inode.c */
+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_check_free_space(struct btrfs_root *root, u64 num_required,
int for_del);
int btrfs_page_mkwrite(struct vm_area_struct *vma, struct page *page);
int btrfs_readpage(struct file *file, struct page *page);
void btrfs_delete_inode(struct inode *inode);
+void btrfs_put_inode(struct inode *inode);
void btrfs_read_locked_inode(struct inode *inode);
int btrfs_write_inode(struct inode *inode, int wait);
void btrfs_dirty_inode(struct inode *inode);
long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
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);
int btrfs_commit_write(struct file *file, struct page *page,
unsigned from, unsigned to);
struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page,
struct inode *inode);
/* file.c */
int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end);
+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,
struct btrfs_root *root, struct inode *inode,
ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
int btrfs_delete_xattrs(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct inode *inode);
+/* super.c */
+u64 btrfs_parse_size(char *str);
#endif
projects / linux-2.6-omap-h63xx.git / blobdiff