* 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/highmem.h>
#include <linux/fs.h>
-#include <linux/buffer_head.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;
struct btrfs_transaction;
extern struct kmem_cache *btrfs_bit_radix_cachep;
extern struct kmem_cache *btrfs_path_cachep;
-#define BTRFS_MAGIC "_BtRfS_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
-#define BTRFS_FIRST_FREE_OBJECTID 5ULL
+
+/*
+ * 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
+#define BTRFS_FIRST_CHUNK_TREE_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
#define BTRFS_CSUM_SIZE 32
/* four bytes for CRC32 */
#define BTRFS_CRC32_SIZE 4
-#define BTRFS_EMPTY_DIR_SIZE 6
+#define BTRFS_EMPTY_DIR_SIZE 0
#define BTRFS_FT_UNKNOWN 0
#define BTRFS_FT_REG_FILE 1
#define BTRFS_FT_FIFO 5
#define BTRFS_FT_SOCK 6
#define BTRFS_FT_SYMLINK 7
-#define BTRFS_FT_MAX 8
+#define BTRFS_FT_XATTR 8
+#define BTRFS_FT_MAX 9
/*
* the key defines the order in the tree, and so it also defines (optimal)
*/
struct btrfs_disk_key {
__le64 objectid;
- __le32 flags;
+ u8 type;
__le64 offset;
} __attribute__ ((__packed__));
struct btrfs_key {
u64 objectid;
- u32 flags;
+ u8 type;
u64 offset;
} __attribute__ ((__packed__));
+struct btrfs_mapping_tree {
+ struct extent_map_tree map_tree;
+};
+
+#define BTRFS_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;
+
+ /* grouping information for allocation decisions */
+ __le32 dev_group;
+
+ /* seek speed 0-100 where 100 is fastest */
+ u8 seek_speed;
+
+ /* bandwidth 0-100 where 100 is fastest */
+ u8 bandwidth;
+
+ /* btrfs generated uuid for this device */
+ u8 uuid[BTRFS_UUID_SIZE];
+} __attribute__ ((__packed__));
+
+struct btrfs_stripe {
+ __le64 devid;
+ __le64 offset;
+ u8 dev_uuid[BTRFS_UUID_SIZE];
+} __attribute__ ((__packed__));
+
+struct btrfs_chunk {
+ /* size of this chunk in bytes */
+ __le64 length;
+
+ /* objectid of the root referencing this 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;
+
+ /* sub stripes only matter for raid10 */
+ __le16 sub_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
+#define BTRFS_HEADER_FLAG_WRITTEN (1 << 0)
+
/*
* every tree block (leaf or node) starts with this header.
*/
struct btrfs_header {
+ /* these first four must match the super block */
u8 csum[BTRFS_CSUM_SIZE];
- u8 fsid[16]; /* FS specific uuid */
- __le64 blocknr; /* which block this node is supposed to live in */
+ u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */
+ __le64 bytenr; /* which block this node is supposed to live in */
+ __le64 flags;
+
+ /* allowed to be different from the super from here on down */
+ u8 chunk_tree_uuid[BTRFS_UUID_SIZE];
__le64 generation;
__le64 owner;
- __le16 nritems;
- __le16 flags;
+ __le32 nritems;
u8 level;
} __attribute__ ((__packed__));
-#define BTRFS_MAX_LEVEL 8
-#define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->blocksize - \
+#define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \
sizeof(struct btrfs_header)) / \
- (sizeof(struct btrfs_disk_key) + sizeof(u64)))
+ sizeof(struct btrfs_key_ptr))
#define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header))
-#define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->blocksize))
+#define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize))
#define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \
sizeof(struct btrfs_item) - \
sizeof(struct btrfs_file_extent_item))
-struct buffer_head;
+
+/*
+ * 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
+#define BTRFS_LABEL_SIZE 256
+
/*
* the super block basically lists the main trees of the FS
* it currently lacks any block count etc etc
*/
struct btrfs_super_block {
u8 csum[BTRFS_CSUM_SIZE];
- /* the first 3 fields must match struct btrfs_header */
+ /* the first 4 fields must match struct btrfs_header */
u8 fsid[16]; /* FS specific uuid */
- __le64 blocknr; /* this block number */
+ __le64 bytenr; /* this block number */
+ __le64 flags;
+
+ /* allowed to be different from the btrfs_header from here own down */
__le64 magic;
__le64 generation;
__le64 root;
- __le64 total_blocks;
- __le64 blocks_used;
+ __le64 chunk_root;
+ __le64 total_bytes;
+ __le64 bytes_used;
__le64 root_dir_objectid;
- __le32 blocksize;
+ __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;
+ char label[BTRFS_LABEL_SIZE];
+ u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE];
} __attribute__ ((__packed__));
/*
struct btrfs_item {
struct btrfs_disk_key key;
__le32 offset;
- __le16 size;
+ __le32 size;
} __attribute__ ((__packed__));
/*
struct btrfs_key_ptr {
struct btrfs_disk_key key;
__le64 blockptr;
+ __le64 generation;
} __attribute__ ((__packed__));
struct btrfs_node {
* used while walking the tree.
*/
struct btrfs_path {
- struct buffer_head *nodes[BTRFS_MAX_LEVEL];
+ struct extent_buffer *nodes[BTRFS_MAX_LEVEL];
int slots[BTRFS_MAX_LEVEL];
int reada;
int lowest_level;
*/
struct btrfs_extent_item {
__le32 refs;
- __le64 owner;
} __attribute__ ((__packed__));
-struct btrfs_inode_timespec {
+struct btrfs_extent_ref {
+ __le64 root;
+ __le64 generation;
+ __le64 objectid;
+ __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. The chunk tree uuid field is a way to double check the owner
+ */
+struct btrfs_dev_extent {
+ __le64 chunk_tree;
+ __le64 chunk_objectid;
+ __le64 chunk_offset;
+ __le64 length;
+ u8 chunk_tree_uuid[BTRFS_UUID_SIZE];
+} __attribute__ ((__packed__));
+
+struct btrfs_inode_ref {
+ __le16 name_len;
+ /* name goes here */
+} __attribute__ ((__packed__));
+
+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 {
struct btrfs_disk_key location;
- __le16 flags;
+ __le16 data_len;
__le16 name_len;
u8 type;
} __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 {
u8 csum;
} __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)
+/* 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_RAID1 (1 << 4)
+#define BTRFS_BLOCK_GROUP_DUP (1 << 5)
+#define BTRFS_BLOCK_GROUP_RAID10 (1 << 6)
-#define BTRFS_BLOCK_GROUP_DATA 1
struct btrfs_block_group_item {
__le64 used;
- u8 flags;
+ __le64 chunk_objectid;
+ __le64 flags;
} __attribute__ ((__packed__));
+struct btrfs_space_info {
+ u64 flags;
+ u64 total_bytes;
+ u64 bytes_used;
+ u64 bytes_pinned;
+ int full;
+ int force_alloc;
+ struct list_head list;
+};
+
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;
+ struct btrfs_space_info *space_info;
u64 pinned;
- u64 last_prealloc;
- int data;
+ u64 flags;
int cached;
+ int ro;
};
+struct btrfs_device;
+struct btrfs_fs_devices;
struct btrfs_fs_info {
+ u8 fsid[BTRFS_FSID_SIZE];
+ u8 chunk_tree_uuid[BTRFS_UUID_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 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;
- u64 extent_tree_insert[BTRFS_MAX_LEVEL * 6];
- int extent_tree_insert_nr;
- u64 extent_tree_prealloc[BTRFS_MAX_LEVEL * 6];
- int extent_tree_prealloc_nr;
+ 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 *disk_super;
struct btrfs_super_block super_copy;
- struct buffer_head *sb_buffer;
+ struct btrfs_super_block super_for_commit;
+ 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 list_head trans_list;
+ struct list_head hashers;
struct list_head dead_roots;
+ struct list_head end_io_work_list;
+ struct list_head async_submit_work_list;
+ struct work_struct end_io_work;
+ struct work_struct async_submit_work;
+ spinlock_t end_io_work_lock;
+ spinlock_t async_submit_work_lock;
+ atomic_t nr_async_submits;
+
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
+ struct work_struct trans_work;
+#else
struct delayed_work trans_work;
+#endif
+ struct kobject super_kobj;
+ 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;
+
+ u64 avail_data_alloc_bits;
+ u64 avail_metadata_alloc_bits;
+ u64 avail_system_alloc_bits;
+ u64 data_alloc_profile;
+ u64 metadata_alloc_profile;
+ u64 system_alloc_profile;
+
+ void *bdev_holder;
};
/*
* and for the extent tree extent_root root.
*/
struct btrfs_root {
- struct buffer_head *node;
- struct buffer_head *commit_root;
+ struct extent_buffer *node;
+ struct extent_buffer *commit_root;
struct btrfs_root_item root_item;
struct btrfs_key root_key;
struct btrfs_fs_info *fs_info;
struct inode *inode;
+ struct kobject root_kobj;
+ struct completion kobj_unregister;
u64 objectid;
u64 last_trans;
- u32 blocksize;
+
+ /* data allocations are done in sectorsize units */
+ u32 sectorsize;
+
+ /* node allocations are done in nodesize units */
+ u32 nodesize;
+
+ /* leaf allocations are done in leafsize units */
+ u32 leafsize;
+
+ u32 stripesize;
+
u32 type;
u64 highest_inode;
u64 last_inode_alloc;
int ref_cows;
+ int track_dirty;
struct btrfs_key defrag_progress;
+ struct btrfs_key defrag_max;
int defrag_running;
int defrag_level;
-};
+ char *name;
+ int in_sysfs;
-/* the lower bits in the key flags defines the item type */
-#define BTRFS_KEY_TYPE_MAX 256
-#define BTRFS_KEY_TYPE_SHIFT 24
-#define BTRFS_KEY_TYPE_MASK (((u32)BTRFS_KEY_TYPE_MAX - 1) << \
- BTRFS_KEY_TYPE_SHIFT)
+ /* 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_INODE_ITEM_KEY 1
-
+#define BTRFS_INODE_REF_KEY 2
+#define BTRFS_XATTR_ITEM_KEY 8
/* reserve 2-15 close to the inode for later flexibility */
/*
* are used, and how many references there are to each block
*/
#define BTRFS_EXTENT_ITEM_KEY 33
+#define BTRFS_EXTENT_REF_KEY 34
/*
* block groups give us hints into the extent allocation trees. Which
* blocks are free etc etc
*/
-#define BTRFS_BLOCK_GROUP_ITEM_KEY 34
+#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
*/
#define BTRFS_STRING_ITEM_KEY 253
+#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_MOUNT_DEGRADED (1 << 4)
-static inline u64 btrfs_block_group_used(struct btrfs_block_group_item *bi)
-{
- return le64_to_cpu(bi->used);
-}
-
-static inline void btrfs_set_block_group_used(struct
- btrfs_block_group_item *bi,
- u64 val)
-{
- bi->used = cpu_to_le64(val);
-}
-
-static inline u64 btrfs_inode_generation(struct btrfs_inode_item *i)
-{
- return le64_to_cpu(i->generation);
-}
-
-static inline void btrfs_set_inode_generation(struct btrfs_inode_item *i,
- u64 val)
-{
- i->generation = cpu_to_le64(val);
-}
-
-static inline u64 btrfs_inode_size(struct btrfs_inode_item *i)
-{
- return le64_to_cpu(i->size);
-}
+#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 le8_to_cpu(v) (v)
+#define cpu_to_le8(v) (v)
+#define __le8 u8
+
+#define read_eb_member(eb, ptr, type, member, result) ( \
+ read_extent_buffer(eb, (char *)(result), \
+ ((unsigned long)(ptr)) + \
+ offsetof(type, member), \
+ sizeof(((type *)0)->member)))
+
+#define write_eb_member(eb, ptr, type, member, result) ( \
+ write_extent_buffer(eb, (char *)(result), \
+ ((unsigned long)(ptr)) + \
+ offsetof(type, member), \
+ sizeof(((type *)0)->member)))
+
+#ifndef BTRFS_SETGET_FUNCS
+#define BTRFS_SETGET_FUNCS(name, type, member, bits) \
+u##bits btrfs_##name(struct extent_buffer *eb, type *s); \
+void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val);
+#endif
-static inline void btrfs_set_inode_size(struct btrfs_inode_item *i, u64 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); \
+ 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); \
+ p->member = cpu_to_le##bits(val); \
+ kunmap_atomic(p, KM_USER0); \
+}
+
+#define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
+static inline u##bits btrfs_##name(type *s) \
+{ \
+ return le##bits##_to_cpu(s->member); \
+} \
+static inline void btrfs_set_##name(type *s, u##bits val) \
+{ \
+ 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_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32);
+BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8);
+BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8);
+
+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);
+BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item,
+ dev_group, 32);
+BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item,
+ seek_speed, 8);
+BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item,
+ bandwidth, 8);
+
+static inline char *btrfs_device_uuid(struct btrfs_dev_item *d)
+{
+ return (char *)d + offsetof(struct btrfs_dev_item, uuid);
+}
+
+BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64);
+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(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16);
+BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64);
+BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64);
+
+static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s)
+{
+ return (char *)s + offsetof(struct btrfs_stripe, dev_uuid);
+}
+
+BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 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_chunk_sub_stripes, struct btrfs_chunk,
+ sub_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 char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr)
+{
+ return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr));
+}
+
+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)
{
- i->size = cpu_to_le64(val);
+ btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val);
}
-static inline u64 btrfs_inode_nblocks(struct btrfs_inode_item *i)
+static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb,
+ struct btrfs_chunk *c, int nr)
{
- return le64_to_cpu(i->nblocks);
+ return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr));
}
-static inline void btrfs_set_inode_nblocks(struct btrfs_inode_item *i, u64 val)
+static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb,
+ struct btrfs_chunk *c, int nr,
+ u64 val)
{
- i->nblocks = cpu_to_le64(val);
+ btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val);
}
-static inline u64 btrfs_inode_block_group(struct btrfs_inode_item *i)
-{
- return le64_to_cpu(i->block_group);
-}
+/* 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_objectid,
+ struct btrfs_block_group_item, chunk_objectid, 64);
-static inline void btrfs_set_inode_block_group(struct btrfs_inode_item *i,
- u64 val)
-{
- i->block_group = cpu_to_le64(val);
-}
+BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid,
+ 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);
-static inline u32 btrfs_inode_nlink(struct btrfs_inode_item *i)
-{
- return le32_to_cpu(i->nlink);
-}
+/* struct btrfs_inode_ref */
+BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16);
-static inline void btrfs_set_inode_nlink(struct btrfs_inode_item *i, u32 val)
-{
- i->nlink = cpu_to_le32(val);
-}
+/* struct btrfs_inode_item */
+BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 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_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(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, 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 u32 btrfs_inode_uid(struct btrfs_inode_item *i)
+static inline struct btrfs_timespec *
+btrfs_inode_atime(struct btrfs_inode_item *inode_item)
{
- return le32_to_cpu(i->uid);
+ unsigned long ptr = (unsigned long)inode_item;
+ ptr += offsetof(struct btrfs_inode_item, atime);
+ return (struct btrfs_timespec *)ptr;
}
-static inline void btrfs_set_inode_uid(struct btrfs_inode_item *i, u32 val)
+static inline struct btrfs_timespec *
+btrfs_inode_mtime(struct btrfs_inode_item *inode_item)
{
- i->uid = cpu_to_le32(val);
+ unsigned long ptr = (unsigned long)inode_item;
+ ptr += offsetof(struct btrfs_inode_item, mtime);
+ return (struct btrfs_timespec *)ptr;
}
-static inline u32 btrfs_inode_gid(struct btrfs_inode_item *i)
+static inline struct btrfs_timespec *
+btrfs_inode_ctime(struct btrfs_inode_item *inode_item)
{
- return le32_to_cpu(i->gid);
+ unsigned long ptr = (unsigned long)inode_item;
+ ptr += offsetof(struct btrfs_inode_item, ctime);
+ return (struct btrfs_timespec *)ptr;
}
-static inline void btrfs_set_inode_gid(struct btrfs_inode_item *i, u32 val)
+static inline struct btrfs_timespec *
+btrfs_inode_otime(struct btrfs_inode_item *inode_item)
{
- i->gid = cpu_to_le32(val);
+ unsigned long ptr = (unsigned long)inode_item;
+ ptr += offsetof(struct btrfs_inode_item, otime);
+ return (struct btrfs_timespec *)ptr;
}
-static inline u32 btrfs_inode_mode(struct btrfs_inode_item *i)
-{
- return le32_to_cpu(i->mode);
-}
+BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64);
+BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32);
-static inline void btrfs_set_inode_mode(struct btrfs_inode_item *i, u32 val)
-{
- i->mode = cpu_to_le32(val);
-}
+/* struct btrfs_extent_item */
+BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32);
-static inline u32 btrfs_inode_rdev(struct btrfs_inode_item *i)
-{
- return le32_to_cpu(i->rdev);
-}
+/* struct btrfs_dev_extent */
+BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent,
+ chunk_tree, 64);
+BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent,
+ chunk_objectid, 64);
+BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent,
+ chunk_offset, 64);
+BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64);
-static inline void btrfs_set_inode_rdev(struct btrfs_inode_item *i, u32 val)
+static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev)
{
- i->rdev = cpu_to_le32(val);
+ unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid);
+ return (u8 *)((unsigned long)dev + ptr);
}
-static inline u16 btrfs_inode_flags(struct btrfs_inode_item *i)
-{
- return le16_to_cpu(i->flags);
-}
+/* 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_FUNCS(ref_objectid, struct btrfs_extent_ref, objectid, 64);
+BTRFS_SETGET_FUNCS(ref_offset, struct btrfs_extent_ref, offset, 64);
-static inline void btrfs_set_inode_flags(struct btrfs_inode_item *i, u16 val)
-{
- i->flags = cpu_to_le16(val);
-}
+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);
-static inline u16 btrfs_inode_compat_flags(struct btrfs_inode_item *i)
-{
- return le16_to_cpu(i->compat_flags);
-}
+BTRFS_SETGET_STACK_FUNCS(stack_extent_refs, struct btrfs_extent_item,
+ refs, 32);
-static inline void btrfs_set_inode_compat_flags(struct btrfs_inode_item *i,
- u16 val)
-{
- i->compat_flags = cpu_to_le16(val);
-}
+/* struct btrfs_node */
+BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64);
+BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64);
-static inline u64 btrfs_timespec_sec(struct btrfs_inode_timespec *ts)
+static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr)
{
- return le64_to_cpu(ts->sec);
+ unsigned long ptr;
+ ptr = offsetof(struct btrfs_node, ptrs) +
+ sizeof(struct btrfs_key_ptr) * nr;
+ return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr);
}
-static inline void btrfs_set_timespec_sec(struct btrfs_inode_timespec *ts,
- u64 val)
+static inline void btrfs_set_node_blockptr(struct extent_buffer *eb,
+ int nr, u64 val)
{
- ts->sec = cpu_to_le64(val);
+ unsigned long ptr;
+ ptr = offsetof(struct btrfs_node, ptrs) +
+ sizeof(struct btrfs_key_ptr) * nr;
+ btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val);
}
-static inline u32 btrfs_timespec_nsec(struct btrfs_inode_timespec *ts)
+static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr)
{
- return le32_to_cpu(ts->nsec);
+ unsigned long ptr;
+ ptr = offsetof(struct btrfs_node, ptrs) +
+ sizeof(struct btrfs_key_ptr) * nr;
+ return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr);
}
-static inline void btrfs_set_timespec_nsec(struct btrfs_inode_timespec *ts,
- u32 val)
+static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb,
+ int nr, u64 val)
{
- ts->nsec = cpu_to_le32(val);
+ unsigned long ptr;
+ ptr = offsetof(struct btrfs_node, ptrs) +
+ sizeof(struct btrfs_key_ptr) * nr;
+ btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val);
}
-static inline u32 btrfs_extent_refs(struct btrfs_extent_item *ei)
+static inline unsigned long btrfs_node_key_ptr_offset(int nr)
{
- return le32_to_cpu(ei->refs);
+ return offsetof(struct btrfs_node, ptrs) +
+ sizeof(struct btrfs_key_ptr) * nr;
}
-static inline void btrfs_set_extent_refs(struct btrfs_extent_item *ei, u32 val)
-{
- ei->refs = cpu_to_le32(val);
-}
+void btrfs_node_key(struct extent_buffer *eb,
+ struct btrfs_disk_key *disk_key, int nr);
-static inline u64 btrfs_extent_owner(struct btrfs_extent_item *ei)
+static inline void btrfs_set_node_key(struct extent_buffer *eb,
+ struct btrfs_disk_key *disk_key, int nr)
{
- return le64_to_cpu(ei->owner);
+ unsigned long ptr;
+ ptr = btrfs_node_key_ptr_offset(nr);
+ write_eb_member(eb, (struct btrfs_key_ptr *)ptr,
+ struct btrfs_key_ptr, key, disk_key);
}
-static inline void btrfs_set_extent_owner(struct btrfs_extent_item *ei, u64 val)
-{
- ei->owner = cpu_to_le64(val);
-}
+/* struct btrfs_item */
+BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32);
+BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32);
-static inline u64 btrfs_node_blockptr(struct btrfs_node *n, int nr)
+static inline unsigned long btrfs_item_nr_offset(int nr)
{
- return le64_to_cpu(n->ptrs[nr].blockptr);
+ return offsetof(struct btrfs_leaf, items) +
+ sizeof(struct btrfs_item) * nr;
}
-
-static inline void btrfs_set_node_blockptr(struct btrfs_node *n, int nr,
- u64 val)
+static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb,
+ int nr)
{
- n->ptrs[nr].blockptr = cpu_to_le64(val);
+ return (struct btrfs_item *)btrfs_item_nr_offset(nr);
}
-static inline u32 btrfs_item_offset(struct btrfs_item *item)
+static inline u32 btrfs_item_end(struct extent_buffer *eb,
+ struct btrfs_item *item)
{
- return le32_to_cpu(item->offset);
+ return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item);
}
-static inline void btrfs_set_item_offset(struct btrfs_item *item, u32 val)
+static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr)
{
- item->offset = cpu_to_le32(val);
+ return btrfs_item_end(eb, btrfs_item_nr(eb, nr));
}
-static inline u32 btrfs_item_end(struct btrfs_item *item)
+static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr)
{
- return le32_to_cpu(item->offset) + le16_to_cpu(item->size);
+ return btrfs_item_offset(eb, btrfs_item_nr(eb, nr));
}
-static inline u16 btrfs_item_size(struct btrfs_item *item)
+static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr)
{
- return le16_to_cpu(item->size);
+ return btrfs_item_size(eb, btrfs_item_nr(eb, nr));
}
-static inline void btrfs_set_item_size(struct btrfs_item *item, u16 val)
+static inline void btrfs_item_key(struct extent_buffer *eb,
+ struct btrfs_disk_key *disk_key, int nr)
{
- item->size = cpu_to_le16(val);
+ struct btrfs_item *item = btrfs_item_nr(eb, nr);
+ read_eb_member(eb, item, struct btrfs_item, key, disk_key);
}
-static inline u16 btrfs_dir_flags(struct btrfs_dir_item *d)
+static inline void btrfs_set_item_key(struct extent_buffer *eb,
+ struct btrfs_disk_key *disk_key, int nr)
{
- return le16_to_cpu(d->flags);
+ struct btrfs_item *item = btrfs_item_nr(eb, nr);
+ write_eb_member(eb, item, struct btrfs_item, key, disk_key);
}
-static inline void btrfs_set_dir_flags(struct btrfs_dir_item *d, u16 val)
-{
- d->flags = cpu_to_le16(val);
-}
+/* struct btrfs_dir_item */
+BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16);
+BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8);
+BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16);
-static inline u8 btrfs_dir_type(struct btrfs_dir_item *d)
+static inline void btrfs_dir_item_key(struct extent_buffer *eb,
+ struct btrfs_dir_item *item,
+ struct btrfs_disk_key *key)
{
- return d->type;
+ read_eb_member(eb, item, struct btrfs_dir_item, location, key);
}
-static inline void btrfs_set_dir_type(struct btrfs_dir_item *d, u8 val)
+static inline void btrfs_set_dir_item_key(struct extent_buffer *eb,
+ struct btrfs_dir_item *item,
+ struct btrfs_disk_key *key)
{
- d->type = val;
+ write_eb_member(eb, item, struct btrfs_dir_item, location, key);
}
-static inline u16 btrfs_dir_name_len(struct btrfs_dir_item *d)
-{
- return le16_to_cpu(d->name_len);
-}
-
-static inline void btrfs_set_dir_name_len(struct btrfs_dir_item *d, u16 val)
-{
- d->name_len = cpu_to_le16(val);
-}
+/* struct btrfs_disk_key */
+BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key,
+ objectid, 64);
+BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64);
+BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8);
static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu,
struct btrfs_disk_key *disk)
{
cpu->offset = le64_to_cpu(disk->offset);
- cpu->flags = le32_to_cpu(disk->flags);
+ cpu->type = disk->type;
cpu->objectid = le64_to_cpu(disk->objectid);
}
struct btrfs_key *cpu)
{
disk->offset = cpu_to_le64(cpu->offset);
- disk->flags = cpu_to_le32(cpu->flags);
+ disk->type = cpu->type;
disk->objectid = cpu_to_le64(cpu->objectid);
}
-static inline u64 btrfs_disk_key_objectid(struct btrfs_disk_key *disk)
-{
- return le64_to_cpu(disk->objectid);
-}
-
-static inline void btrfs_set_disk_key_objectid(struct btrfs_disk_key *disk,
- u64 val)
-{
- disk->objectid = cpu_to_le64(val);
-}
-
-static inline u64 btrfs_disk_key_offset(struct btrfs_disk_key *disk)
-{
- return le64_to_cpu(disk->offset);
-}
-
-static inline void btrfs_set_disk_key_offset(struct btrfs_disk_key *disk,
- u64 val)
-{
- disk->offset = cpu_to_le64(val);
-}
-
-static inline u32 btrfs_disk_key_flags(struct btrfs_disk_key *disk)
-{
- return le32_to_cpu(disk->flags);
-}
-
-static inline void btrfs_set_disk_key_flags(struct btrfs_disk_key *disk,
- u32 val)
-{
- disk->flags = cpu_to_le32(val);
-}
-
-static inline u32 btrfs_disk_key_type(struct btrfs_disk_key *key)
-{
- return le32_to_cpu(key->flags) >> BTRFS_KEY_TYPE_SHIFT;
-}
-
-static inline void btrfs_set_disk_key_type(struct btrfs_disk_key *key,
- u32 val)
-{
- u32 flags = btrfs_disk_key_flags(key);
- BUG_ON(val >= BTRFS_KEY_TYPE_MAX);
- val = val << BTRFS_KEY_TYPE_SHIFT;
- flags = (flags & ~BTRFS_KEY_TYPE_MASK) | val;
- btrfs_set_disk_key_flags(key, flags);
-}
-
-static inline u32 btrfs_key_type(struct btrfs_key *key)
-{
- return key->flags >> BTRFS_KEY_TYPE_SHIFT;
-}
-
-static inline void btrfs_set_key_type(struct btrfs_key *key, u32 val)
-{
- BUG_ON(val >= BTRFS_KEY_TYPE_MAX);
- val = val << BTRFS_KEY_TYPE_SHIFT;
- key->flags = (key->flags & ~(BTRFS_KEY_TYPE_MASK)) | val;
-}
-
-static inline u64 btrfs_header_blocknr(struct btrfs_header *h)
-{
- return le64_to_cpu(h->blocknr);
-}
-
-static inline void btrfs_set_header_blocknr(struct btrfs_header *h, u64 blocknr)
-{
- h->blocknr = cpu_to_le64(blocknr);
-}
-
-static inline u64 btrfs_header_generation(struct btrfs_header *h)
-{
- return le64_to_cpu(h->generation);
-}
-
-static inline void btrfs_set_header_generation(struct btrfs_header *h,
- u64 val)
-{
- h->generation = cpu_to_le64(val);
-}
-
-static inline u64 btrfs_header_owner(struct btrfs_header *h)
-{
- return le64_to_cpu(h->owner);
-}
-
-static inline void btrfs_set_header_owner(struct btrfs_header *h,
- u64 val)
-{
- h->owner = cpu_to_le64(val);
-}
-
-static inline u16 btrfs_header_nritems(struct btrfs_header *h)
-{
- return le16_to_cpu(h->nritems);
-}
-
-static inline void btrfs_set_header_nritems(struct btrfs_header *h, u16 val)
-{
- h->nritems = cpu_to_le16(val);
-}
-
-static inline u16 btrfs_header_flags(struct btrfs_header *h)
-{
- return le16_to_cpu(h->flags);
-}
-
-static inline void btrfs_set_header_flags(struct btrfs_header *h, u16 val)
-{
- h->flags = cpu_to_le16(val);
-}
-
-static inline int btrfs_header_level(struct btrfs_header *h)
-{
- return h->level;
-}
-
-static inline void btrfs_set_header_level(struct btrfs_header *h, int level)
-{
- BUG_ON(level > BTRFS_MAX_LEVEL);
- h->level = level;
-}
-
-static inline int btrfs_is_leaf(struct btrfs_node *n)
-{
- return (btrfs_header_level(&n->header) == 0);
-}
-
-static inline u64 btrfs_root_blocknr(struct btrfs_root_item *item)
-{
- return le64_to_cpu(item->blocknr);
-}
-
-static inline void btrfs_set_root_blocknr(struct btrfs_root_item *item, u64 val)
+static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb,
+ struct btrfs_key *key, int nr)
{
- item->blocknr = cpu_to_le64(val);
+ struct btrfs_disk_key disk_key;
+ btrfs_node_key(eb, &disk_key, nr);
+ btrfs_disk_key_to_cpu(key, &disk_key);
}
-static inline u64 btrfs_root_dirid(struct btrfs_root_item *item)
+static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb,
+ struct btrfs_key *key, int nr)
{
- return le64_to_cpu(item->root_dirid);
+ struct btrfs_disk_key disk_key;
+ btrfs_item_key(eb, &disk_key, nr);
+ btrfs_disk_key_to_cpu(key, &disk_key);
}
-static inline void btrfs_set_root_dirid(struct btrfs_root_item *item, u64 val)
+static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb,
+ struct btrfs_dir_item *item,
+ struct btrfs_key *key)
{
- item->root_dirid = cpu_to_le64(val);
+ struct btrfs_disk_key disk_key;
+ btrfs_dir_item_key(eb, item, &disk_key);
+ btrfs_disk_key_to_cpu(key, &disk_key);
}
-static inline u32 btrfs_root_refs(struct btrfs_root_item *item)
-{
- return le32_to_cpu(item->refs);
-}
-static inline void btrfs_set_root_refs(struct btrfs_root_item *item, u32 val)
+static inline u8 btrfs_key_type(struct btrfs_key *key)
{
- item->refs = cpu_to_le32(val);
+ return key->type;
}
-static inline u32 btrfs_root_flags(struct btrfs_root_item *item)
+static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val)
{
- return le32_to_cpu(item->flags);
+ key->type = val;
}
-static inline void btrfs_set_root_flags(struct btrfs_root_item *item, u32 val)
-{
- item->flags = cpu_to_le32(val);
-}
+/* struct btrfs_header */
+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);
+BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32);
+BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64);
+BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8);
-static inline u64 btrfs_super_blocknr(struct btrfs_super_block *s)
+static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag)
{
- return le64_to_cpu(s->blocknr);
+ return (btrfs_header_flags(eb) & flag) == flag;
}
-static inline void btrfs_set_super_blocknr(struct btrfs_super_block *s, u64 val)
+static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag)
{
- s->blocknr = cpu_to_le64(val);
+ u64 flags = btrfs_header_flags(eb);
+ btrfs_set_header_flags(eb, flags | flag);
+ return (flags & flag) == flag;
}
-static inline u64 btrfs_super_generation(struct btrfs_super_block *s)
+static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag)
{
- return le64_to_cpu(s->generation);
+ u64 flags = btrfs_header_flags(eb);
+ btrfs_set_header_flags(eb, flags & ~flag);
+ return (flags & flag) == flag;
}
-static inline void btrfs_set_super_generation(struct btrfs_super_block *s,
- u64 val)
+static inline u8 *btrfs_header_fsid(struct extent_buffer *eb)
{
- s->generation = cpu_to_le64(val);
+ unsigned long ptr = offsetof(struct btrfs_header, fsid);
+ return (u8 *)ptr;
}
-static inline u64 btrfs_super_root(struct btrfs_super_block *s)
+static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb)
{
- return le64_to_cpu(s->root);
+ unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid);
+ return (u8 *)ptr;
}
-static inline void btrfs_set_super_root(struct btrfs_super_block *s, u64 val)
+static inline u8 *btrfs_super_fsid(struct extent_buffer *eb)
{
- s->root = cpu_to_le64(val);
+ unsigned long ptr = offsetof(struct btrfs_super_block, fsid);
+ return (u8 *)ptr;
}
-static inline u64 btrfs_super_total_blocks(struct btrfs_super_block *s)
+static inline u8 *btrfs_header_csum(struct extent_buffer *eb)
{
- return le64_to_cpu(s->total_blocks);
+ unsigned long ptr = offsetof(struct btrfs_header, csum);
+ return (u8 *)ptr;
}
-static inline void btrfs_set_super_total_blocks(struct btrfs_super_block *s,
- u64 val)
+static inline struct btrfs_node *btrfs_buffer_node(struct extent_buffer *eb)
{
- s->total_blocks = cpu_to_le64(val);
+ return NULL;
}
-static inline u64 btrfs_super_blocks_used(struct btrfs_super_block *s)
+static inline struct btrfs_leaf *btrfs_buffer_leaf(struct extent_buffer *eb)
{
- return le64_to_cpu(s->blocks_used);
+ return NULL;
}
-static inline void btrfs_set_super_blocks_used(struct btrfs_super_block *s,
- u64 val)
+static inline struct btrfs_header *btrfs_buffer_header(struct extent_buffer *eb)
{
- s->blocks_used = cpu_to_le64(val);
+ return NULL;
}
-static inline u32 btrfs_super_blocksize(struct btrfs_super_block *s)
+static inline int btrfs_is_leaf(struct extent_buffer *eb)
{
- return le32_to_cpu(s->blocksize);
+ return (btrfs_header_level(eb) == 0);
}
-static inline void btrfs_set_super_blocksize(struct btrfs_super_block *s,
- u32 val)
-{
- s->blocksize = cpu_to_le32(val);
-}
+/* struct btrfs_root_item */
+BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32);
+BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64);
+BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8);
-static inline u64 btrfs_super_root_dir(struct btrfs_super_block *s)
-{
- return le64_to_cpu(s->root_dir_objectid);
-}
+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, bytes_used, 64);
+BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64);
-static inline void btrfs_set_super_root_dir(struct btrfs_super_block *s, u64
- val)
-{
- s->root_dir_objectid = cpu_to_le64(val);
-}
+/* struct btrfs_super_block */
+BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64);
+BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 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,
+ 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,
+ nodesize, 32);
+BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block,
+ leafsize, 32);
+BTRFS_SETGET_STACK_FUNCS(super_stripesize, 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 u8 *btrfs_leaf_data(struct btrfs_leaf *l)
+static inline unsigned long btrfs_leaf_data(struct extent_buffer *l)
{
- return (u8 *)l->items;
+ return offsetof(struct btrfs_leaf, items);
}
-static inline int btrfs_file_extent_type(struct btrfs_file_extent_item *e)
-{
- return e->type;
-}
-static inline void btrfs_set_file_extent_type(struct btrfs_file_extent_item *e,
- u8 val)
-{
- e->type = val;
-}
+/* struct btrfs_file_extent_item */
+BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8);
-static inline char *btrfs_file_extent_inline_start(struct
+static inline unsigned long btrfs_file_extent_inline_start(struct
btrfs_file_extent_item *e)
{
- return (char *)(&e->disk_blocknr);
+ unsigned long offset = (unsigned long)e;
+ offset += offsetof(struct btrfs_file_extent_item, disk_bytenr);
+ return offset;
}
static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize)
{
- return (unsigned long)(&((struct
- btrfs_file_extent_item *)NULL)->disk_blocknr) + datasize;
-}
-
-static inline u32 btrfs_file_extent_inline_len(struct btrfs_item *e)
-{
- struct btrfs_file_extent_item *fe = NULL;
- return btrfs_item_size(e) - (unsigned long)(&fe->disk_blocknr);
-}
-
-static inline u64 btrfs_file_extent_disk_blocknr(struct btrfs_file_extent_item
- *e)
-{
- return le64_to_cpu(e->disk_blocknr);
-}
-
-static inline void btrfs_set_file_extent_disk_blocknr(struct
- btrfs_file_extent_item
- *e, u64 val)
-{
- e->disk_blocknr = cpu_to_le64(val);
-}
-
-static inline u64 btrfs_file_extent_generation(struct btrfs_file_extent_item *e)
-{
- return le64_to_cpu(e->generation);
-}
-
-static inline void btrfs_set_file_extent_generation(struct
- btrfs_file_extent_item *e,
- u64 val)
-{
- e->generation = cpu_to_le64(val);
-}
-
-static inline u64 btrfs_file_extent_disk_num_blocks(struct
- btrfs_file_extent_item *e)
-{
- return le64_to_cpu(e->disk_num_blocks);
-}
-
-static inline void btrfs_set_file_extent_disk_num_blocks(struct
- btrfs_file_extent_item
- *e, u64 val)
-{
- e->disk_num_blocks = cpu_to_le64(val);
-}
-
-static inline u64 btrfs_file_extent_offset(struct btrfs_file_extent_item *e)
-{
- return le64_to_cpu(e->offset);
-}
-
-static inline void btrfs_set_file_extent_offset(struct btrfs_file_extent_item
- *e, u64 val)
-{
- e->offset = cpu_to_le64(val);
+ return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize;
}
-static inline u64 btrfs_file_extent_num_blocks(struct btrfs_file_extent_item
- *e)
+static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb,
+ struct btrfs_item *e)
{
- return le64_to_cpu(e->num_blocks);
+ unsigned long offset;
+ offset = offsetof(struct btrfs_file_extent_item, disk_bytenr);
+ return btrfs_item_size(eb, e) - offset;
}
-static inline void btrfs_set_file_extent_num_blocks(struct
- btrfs_file_extent_item *e,
- u64 val)
-{
- e->num_blocks = cpu_to_le64(val);
-}
+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_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_bytes, struct btrfs_file_extent_item,
+ num_bytes, 64);
static inline struct btrfs_root *btrfs_sb(struct super_block *sb)
{
return sb->s_fs_info;
}
-static inline void btrfs_check_bounds(void *vptr, size_t len,
- void *vcontainer, size_t container_len)
+static inline int btrfs_set_root_name(struct btrfs_root *root,
+ const char *name, int len)
{
- char *ptr = vptr;
- char *container = vcontainer;
- WARN_ON(ptr < container);
- WARN_ON(ptr + len > container + container_len);
-}
+ /* if we already have a name just free it */
+ if (root->name)
+ kfree(root->name);
-static inline void btrfs_memcpy(struct btrfs_root *root,
- void *dst_block,
- void *dst, const void *src, size_t nr)
-{
- btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize);
- memcpy(dst, src, nr);
+ root->name = kmalloc(len+1, GFP_KERNEL);
+ if (!root->name)
+ return -ENOMEM;
+
+ memcpy(root->name, name, len);
+ root->name[len] ='\0';
+
+ return 0;
}
-static inline void btrfs_memmove(struct btrfs_root *root,
- void *dst_block,
- void *dst, void *src, size_t nr)
-{
- btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize);
- memmove(dst, src, nr);
+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) + \
- btrfs_item_offset((leaf)->items + (slot))))
+ btrfs_item_offset_nr(leaf, slot)))
+
+#define btrfs_item_ptr_offset(leaf, slot) \
+ ((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
+ return file->f_path.dentry;
+#endif
+}
/* extent-tree.c */
-int btrfs_copy_pinned(struct btrfs_root *root, struct radix_tree_root *copy);
+u32 btrfs_count_snapshots_in_path(struct btrfs_root *root,
+ struct btrfs_path *count_path,
+ u64 expected_owner, 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_io_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 data, int owner);
int btrfs_inc_root_ref(struct btrfs_trans_handle *trans,
- struct btrfs_root *root);
-struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, u64 hint,
- u64 empty_size);
+ struct btrfs_root *root, u64 owner_objectid);
+struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u32 size,
+ u64 root_objectid,
+ u64 hint, u64 empty_size);
+struct extent_buffer *__btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ u32 blocksize,
+ u64 root_objectid,
+ u64 ref_generation,
+ u64 first_objectid,
+ 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 root_objectid, u64 ref_generation,
+ u64 owner, u64 owner_offset);
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 search_end, struct btrfs_key *ins, int data);
+ struct btrfs_root *root,
+ u64 num_bytes, u64 min_bytes,
+ u64 root_objectid, u64 ref_generation,
+ u64 owner, u64 owner_offset,
+ u64 empty_size, u64 hint_byte,
+ u64 search_end, struct btrfs_key *ins, u64 data);
int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
- struct buffer_head *buf);
+ 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,
+ u64 root_objectid, u64 ref_generation,
+ u64 owner_objectid, u64 owner_offset, int pin);
int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
- struct radix_tree_root *unpin_radix);
+ struct extent_io_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,
+ u64 root_objectid, u64 ref_generation,
+ u64 owner, u64 owner_offset);
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);
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_objectid, u64 chunk_offset,
+ u64 size);
/* ctree.c */
-int btrfs_cow_block(struct btrfs_trans_handle *trans, struct btrfs_root
- *root, struct buffer_head *buf, struct buffer_head
- *parent, int parent_slot, struct buffer_head
- **cow_ret);
+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 extent_buffer **cow_ret);
+int btrfs_copy_root(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct extent_buffer *buf,
+ struct extent_buffer **cow_ret, u64 new_root_objectid);
int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_path *path, u32 data_size);
int btrfs_truncate_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
- u32 new_size);
+ u32 new_size, int from_end);
int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_key *key, struct btrfs_path *p, int
ins_len, int cow);
int btrfs_realloc_node(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, struct buffer_head *parent,
- int cache_only);
+ struct btrfs_root *root, struct extent_buffer *parent,
+ 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);
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_leaf_free_space(struct btrfs_root *root, struct btrfs_leaf *leaf);
+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_trans_handle *trans, struct btrfs_root
*root);
/* root-item.c */
*item);
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);
+int btrfs_search_root(struct btrfs_root *root, u64 search_start,
+ u64 *found_objectid);
+int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid,
+ struct btrfs_root *latest_root);
/* dir-item.c */
int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root
*root, const char *name, int name_len, u64 dir,
struct btrfs_root *root,
struct btrfs_path *path,
struct btrfs_dir_item *di);
+int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, const char *name,
+ u16 name_len, const void *data, u16 data_len,
+ u64 dir);
+struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct btrfs_path *path, u64 dir,
+ const char *name, u16 name_len,
+ int mod);
/* inode-map.c */
int btrfs_find_free_objectid(struct btrfs_trans_handle *trans,
struct btrfs_root *fs_root,
int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid);
/* inode-item.c */
-int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root
- *root, u64 objectid, struct btrfs_inode_item
- *inode_item);
+int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ const char *name, int name_len,
+ u64 inode_objectid, u64 ref_objectid);
+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);
+int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct btrfs_path *path, u64 objectid);
int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_path *path,
struct btrfs_key *location, int mod);
/* file-item.c */
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 objectid, u64 pos, u64 disk_offset,
+ u64 disk_num_bytes,
+ u64 num_bytes, u64 offset);
int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path, u64 objectid,
- u64 blocknr, int mod);
-int btrfs_csum_file_block(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- u64 objectid, u64 offset,
- char *data, size_t len);
+ u64 bytenr, int mod);
+int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, struct inode *inode,
+ struct bio *bio, char *sums);
+int btrfs_csum_one_bio(struct btrfs_root *root,
+ struct bio *bio, char **sums_ret);
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 */
+void btrfs_invalidate_dcache_root(struct btrfs_root *root, char *name,
+ int namelen);
+
+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);
void btrfs_destroy_inode(struct inode *inode);
int btrfs_init_cachep(void);
void btrfs_destroy_cachep(void);
-int btrfs_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg);
-long btrfs_compat_ioctl(struct file *file, unsigned int cmd,
- unsigned long arg);
+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);
-int btrfs_get_block(struct inode *inode, sector_t iblock,
- struct buffer_head *result, int create);
+struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page,
+ size_t page_offset, u64 start, u64 end,
+ int create);
+int btrfs_update_inode(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ 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,
- u64 start, u64 end, u64 *hint_block);
+ u64 start, u64 end, u64 inline_limit, u64 *hint_block);
/* tree-defrag.c */
int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
struct btrfs_root *root, int cache_only);
+
+/* sysfs.c */
+int btrfs_init_sysfs(void);
+void btrfs_exit_sysfs(void);
+int btrfs_sysfs_add_super(struct btrfs_fs_info *fs);
+int btrfs_sysfs_add_root(struct btrfs_root *root);
+void btrfs_sysfs_del_root(struct btrfs_root *root);
+void btrfs_sysfs_del_super(struct btrfs_fs_info *root);
+
+/* xattr.c */
+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);
+int btrfs_parse_options(char *options, struct btrfs_root *root,
+ char **subvol_name);
#endif
projects / linux-2.6-block.git / blobdiff