#include <linux/backing-dev.h>
#include <linux/wait.h>
#include <asm/kmap_types.h>
-#include "bit-radix.h"
#include "extent_io.h"
#include "extent_map.h"
#include "async-thread.h"
extern struct kmem_cache *btrfs_path_cachep;
struct btrfs_ordered_sum;
-#define BTRFS_MAGIC "_B9RfS_M"
+#define BTRFS_MAGIC "_BDRfS_M"
#define BTRFS_ACL_NOT_CACHED ((void *)-1)
#define BTRFS_TREE_LOG_OBJECTID -6ULL
#define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL
+/* for space balancing */
+#define BTRFS_TREE_RELOC_OBJECTID -8ULL
+#define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL
+
/* dummy objectid represents multiple objectids */
#define BTRFS_MULTIPLE_OBJECTIDS -255ULL
__le32 leafsize;
__le32 stripesize;
__le32 sys_chunk_array_size;
+ __le64 chunk_root_generation;
u8 root_level;
u8 chunk_root_level;
u8 log_root_level;
__le64 root;
__le64 generation;
__le64 objectid;
- __le64 offset;
__le32 num_refs;
} __attribute__ ((__packed__));
__le32 nsec;
} __attribute__ ((__packed__));
-/*
- * there is no padding here on purpose. If you want to extent the inode,
- * make a new item type
- */
+typedef enum {
+ BTRFS_COMPRESS_NONE = 0,
+ BTRFS_COMPRESS_ZLIB = 1,
+ BTRFS_COMPRESS_LAST = 2,
+} btrfs_compression_type;
+
+/* we don't understand any encryption methods right now */
+typedef enum {
+ BTRFS_ENCRYPTION_NONE = 0,
+ BTRFS_ENCRYPTION_LAST = 1,
+} btrfs_encryption_type;
+
struct btrfs_inode_item {
/* nfs style generation number */
__le64 generation;
/* transid that last touched this inode */
__le64 transid;
__le64 size;
- __le64 nblocks;
+ __le64 nbytes;
__le64 block_group;
__le32 nlink;
__le32 uid;
__le64 rdev;
__le16 flags;
__le16 compat_flags;
+
struct btrfs_timespec atime;
struct btrfs_timespec ctime;
struct btrfs_timespec mtime;
struct btrfs_root_item {
struct btrfs_inode_item inode;
+ __le64 generation;
__le64 root_dirid;
__le64 bytenr;
__le64 byte_limit;
__le64 bytes_used;
+ __le64 last_snapshot;
__le32 flags;
__le32 refs;
struct btrfs_disk_key drop_progress;
u8 level;
} __attribute__ ((__packed__));
-#define BTRFS_FILE_EXTENT_REG 0
-#define BTRFS_FILE_EXTENT_INLINE 1
+#define BTRFS_FILE_EXTENT_INLINE 0
+#define BTRFS_FILE_EXTENT_REG 1
+#define BTRFS_FILE_EXTENT_PREALLOC 2
struct btrfs_file_extent_item {
+ /*
+ * transaction id that created this extent
+ */
__le64 generation;
+ /*
+ * max number of bytes to hold this extent in ram
+ * when we split a compressed extent we can't know how big
+ * each of the resulting pieces will be. So, this is
+ * an upper limit on the size of the extent in ram instead of
+ * an exact limit.
+ */
+ __le64 ram_bytes;
+
+ /*
+ * 32 bits for the various ways we might encode the data,
+ * including compression and encryption. If any of these
+ * are set to something a given disk format doesn't understand
+ * it is treated like an incompat flag for reading and writing,
+ * but not for stat.
+ */
+ u8 compression;
+ u8 encryption;
+ __le16 other_encoding; /* spare for later use */
+
+ /* are we inline data or a real extent? */
u8 type;
+
/*
* disk space consumed by the extent, checksum blocks are included
* in these numbers
*/
__le64 offset;
/*
- * the logical number of file blocks (no csums included)
+ * the logical number of file blocks (no csums included). This
+ * always reflects the size uncompressed and without encoding.
*/
__le64 num_bytes;
+
} __attribute__ ((__packed__));
struct btrfs_csum_item {
/* for block groups in our same type */
struct list_head block_groups;
spinlock_t lock;
+ struct rw_semaphore groups_sem;
};
struct btrfs_free_space {
struct btrfs_key key;
struct btrfs_block_group_item item;
spinlock_t lock;
+ struct mutex alloc_mutex;
u64 pinned;
u64 reserved;
u64 flags;
struct list_head list;
};
+struct btrfs_leaf_ref_tree {
+ struct rb_root root;
+ struct list_head list;
+ spinlock_t lock;
+};
+
struct btrfs_device;
struct btrfs_fs_devices;
struct btrfs_fs_info {
struct btrfs_transaction *running_transaction;
wait_queue_head_t transaction_throttle;
wait_queue_head_t transaction_wait;
- wait_queue_head_t async_submit_wait;
+ wait_queue_head_t async_submit_wait;
wait_queue_head_t tree_log_wait;
struct btrfs_super_block super_copy;
struct mutex tree_log_mutex;
struct mutex transaction_kthread_mutex;
struct mutex cleaner_mutex;
- struct mutex alloc_mutex;
+ struct mutex extent_ins_mutex;
+ struct mutex pinned_mutex;
struct mutex chunk_mutex;
struct mutex drop_mutex;
struct mutex volume_mutex;
+ struct mutex tree_reloc_mutex;
struct list_head trans_list;
struct list_head hashers;
struct list_head dead_roots;
atomic_t nr_async_submits;
+ atomic_t async_submit_draining;
atomic_t nr_async_bios;
+ atomic_t async_delalloc_pages;
atomic_t tree_log_writers;
atomic_t tree_log_commit;
unsigned long tree_log_batch;
* two
*/
struct btrfs_workers workers;
+ struct btrfs_workers delalloc_workers;
struct btrfs_workers endio_workers;
struct btrfs_workers endio_write_workers;
struct btrfs_workers submit_workers;
struct task_struct *cleaner_kthread;
int thread_pool_size;
+ /* tree relocation relocated fields */
+ struct list_head dead_reloc_roots;
+ struct btrfs_leaf_ref_tree reloc_ref_tree;
+ struct btrfs_leaf_ref_tree shared_ref_tree;
+
struct kobject super_kobj;
struct completion kobj_unregister;
int do_barriers;
u64 delalloc_bytes;
u64 last_alloc;
u64 last_data_alloc;
- u64 last_log_alloc;
spinlock_t ref_cache_lock;
u64 total_ref_cache_size;
void *bdev_holder;
};
-struct btrfs_leaf_ref_tree {
- struct rb_root root;
- struct btrfs_leaf_ref *last;
- struct list_head list;
- spinlock_t lock;
-};
-
/*
* in ram representation of the tree. extent_root is used for all allocations
* and for the extent tree extent_root root.
struct btrfs_leaf_ref_tree ref_tree_struct;
struct btrfs_dirty_root *dirty_root;
struct btrfs_root *log_root;
+ struct btrfs_root *reloc_root;
struct btrfs_root_item root_item;
struct btrfs_key root_key;
#define BTRFS_MOUNT_NOBARRIER (1 << 2)
#define BTRFS_MOUNT_SSD (1 << 3)
#define BTRFS_MOUNT_DEGRADED (1 << 4)
+#define BTRFS_MOUNT_COMPRESS (1 << 5)
#define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt)
#define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt)
#define BTRFS_INODE_NODATASUM (1 << 0)
#define BTRFS_INODE_NODATACOW (1 << 1)
#define BTRFS_INODE_READONLY (1 << 2)
+#define BTRFS_INODE_NOCOMPRESS (1 << 3)
+#define BTRFS_INODE_PREALLOC (1 << 4)
#define btrfs_clear_flag(inode, flag) (BTRFS_I(inode)->flags &= \
~BTRFS_INODE_##flag)
#define btrfs_set_flag(inode, flag) (BTRFS_I(inode)->flags |= \
BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64);
BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64);
BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64);
-BTRFS_SETGET_FUNCS(inode_nblocks, struct btrfs_inode_item, nblocks, 64);
+BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64);
BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64);
BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32);
BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32);
BTRFS_SETGET_FUNCS(ref_root, struct btrfs_extent_ref, root, 64);
BTRFS_SETGET_FUNCS(ref_generation, struct btrfs_extent_ref, generation, 64);
BTRFS_SETGET_FUNCS(ref_objectid, struct btrfs_extent_ref, objectid, 64);
-BTRFS_SETGET_FUNCS(ref_offset, struct btrfs_extent_ref, offset, 64);
BTRFS_SETGET_FUNCS(ref_num_refs, struct btrfs_extent_ref, num_refs, 32);
BTRFS_SETGET_STACK_FUNCS(stack_ref_root, struct btrfs_extent_ref, root, 64);
generation, 64);
BTRFS_SETGET_STACK_FUNCS(stack_ref_objectid, struct btrfs_extent_ref,
objectid, 64);
-BTRFS_SETGET_STACK_FUNCS(stack_ref_offset, struct btrfs_extent_ref,
- offset, 64);
BTRFS_SETGET_STACK_FUNCS(stack_ref_num_refs, struct btrfs_extent_ref,
num_refs, 32);
}
/* struct btrfs_root_item */
+BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item,
+ generation, 64);
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);
+BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item,
+ generation, 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_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);
+BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item,
+ last_snapshot, 64);
/* struct btrfs_super_block */
BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 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_chunk_root_generation,
+ struct btrfs_super_block, chunk_root_generation, 64);
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,
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_bytenr);
- return btrfs_item_size(eb, e) - offset;
-}
-
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,
offset, 64);
BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item,
num_bytes, 64);
+BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item,
+ ram_bytes, 64);
+BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item,
+ compression, 8);
+BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item,
+ encryption, 8);
+BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item,
+ other_encoding, 16);
+
+/* this returns the number of file bytes represented by the inline item.
+ * If an item is compressed, this is the uncompressed size
+ */
+static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb,
+ struct btrfs_file_extent_item *e)
+{
+ return btrfs_file_extent_ram_bytes(eb, e);
+}
+
+/*
+ * this returns the number of bytes used by the item on disk, minus the
+ * size of any extent headers. If a file is compressed on disk, this is
+ * the compressed size
+ */
+static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb,
+ struct btrfs_item *e)
+{
+ unsigned long offset;
+ offset = offsetof(struct btrfs_file_extent_item, disk_bytenr);
+ return btrfs_item_size(eb, e) - offset;
+}
static inline struct btrfs_root *btrfs_sb(struct super_block *sb)
{
/* extent-tree.c */
int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len);
+int btrfs_lookup_extent_ref(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u64 bytenr,
+ u64 num_bytes, u32 *refs);
int btrfs_update_pinned_extents(struct btrfs_root *root,
u64 bytenr, u64 num, int pin);
int btrfs_drop_leaf_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct extent_buffer *leaf);
-int btrfs_cross_ref_exists(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_key *key, u64 bytenr);
+int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u64 bytenr);
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 extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 bytenr, u32 blocksize);
-int btrfs_shrink_extent_tree(struct btrfs_root *root, u64 new_size);
-int btrfs_insert_extent_backref(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path,
- u64 bytenr, u64 parent,
- u64 root_objectid, u64 ref_generation,
- u64 owner, u64 owner_offset);
int btrfs_alloc_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 num_bytes, u64 parent, u64 min_bytes,
u64 root_objectid, u64 ref_generation,
- u64 owner, u64 owner_offset,
- u64 empty_size, u64 hint_byte,
+ u64 owner, u64 empty_size, u64 hint_byte,
u64 search_end, struct btrfs_key *ins, u64 data);
int btrfs_alloc_reserved_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 parent,
u64 root_objectid, u64 ref_generation,
- u64 owner, u64 owner_offset,
- struct btrfs_key *ins);
+ u64 owner, struct btrfs_key *ins);
int btrfs_alloc_logged_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 parent,
u64 root_objectid, u64 ref_generation,
- u64 owner, u64 owner_offset,
- struct btrfs_key *ins);
+ u64 owner, struct btrfs_key *ins);
int btrfs_reserve_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 num_bytes, u64 min_alloc_size,
struct btrfs_root *root,
u64 bytenr, u64 num_bytes, u64 parent,
u64 root_objectid, u64 ref_generation,
- u64 owner_objectid, u64 owner_offset, int pin);
+ u64 owner_objectid, int pin);
int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len);
int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_root *root,
u64 bytenr, u64 num_bytes, u64 parent,
u64 root_objectid, u64 ref_generation,
- u64 owner, u64 owner_offset);
+ u64 owner_objectid);
int btrfs_update_extent_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 bytenr,
u64 orig_parent, u64 parent,
u64 root_objectid, u64 ref_generation,
- u64 owner, u64 owner_offset);
+ u64 owner_objectid);
int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
int btrfs_free_block_groups(struct btrfs_fs_info *info);
struct btrfs_root *root, u64 bytes_used,
u64 type, u64 chunk_objectid, u64 chunk_offset,
u64 size);
+int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u64 group_start);
+int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start);
+int btrfs_free_reloc_root(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root);
+int btrfs_drop_dead_reloc_roots(struct btrfs_root *root);
+int btrfs_reloc_tree_cache_ref(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct extent_buffer *buf, u64 orig_start);
+int btrfs_add_dead_reloc_root(struct btrfs_root *root);
+int btrfs_cleanup_reloc_trees(struct btrfs_root *root);
/* ctree.c */
int btrfs_previous_item(struct btrfs_root *root,
struct btrfs_path *path, u64 min_objectid,
int type);
+int btrfs_merge_path(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct btrfs_key *node_keys,
+ u64 *nodes, int lowest_level);
int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_key *new_key);
void btrfs_init_path(struct btrfs_path *p);
int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct btrfs_path *path, int slot, int nr);
-
+int btrfs_del_leaf(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct btrfs_path *path, u64 bytenr);
static inline int btrfs_del_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path)
int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf);
int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root
*root);
+int btrfs_drop_subtree(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct extent_buffer *node,
+ struct extent_buffer *parent);
/* root-item.c */
int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct btrfs_key *key);
int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode,
struct bio *bio);
int btrfs_insert_file_extent(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- u64 objectid, u64 pos, u64 disk_offset,
- u64 disk_num_bytes,
- u64 num_bytes, u64 offset);
+ struct btrfs_root *root,
+ u64 objectid, u64 pos,
+ u64 disk_offset, u64 disk_num_bytes,
+ u64 num_bytes, u64 offset, u64 ram_bytes,
+ u8 compression, u8 encryption, u16 other_encoding);
int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path, u64 objectid,
struct btrfs_ordered_sum *sums);
int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
struct bio *bio);
+int btrfs_csum_file_bytes(struct btrfs_root *root, struct inode *inode,
+ u64 start, unsigned long len);
struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end);
int btrfs_writepages(struct address_space *mapping,
struct writeback_control *wbc);
-int btrfs_create_subvol_root(struct btrfs_root *new_root,
+int btrfs_create_subvol_root(struct btrfs_root *new_root, struct dentry *dentry,
struct btrfs_trans_handle *trans, u64 new_dirid,
struct btrfs_block_group_cache *block_group);
int 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;
-}
+ size_t size, struct bio *bio, unsigned long bio_flags);
unsigned long btrfs_force_ra(struct address_space *mapping,
struct file_ra_state *ra, struct file *file,
int btrfs_init_cachep(void);
void btrfs_destroy_cachep(void);
long btrfs_ioctl_trans_end(struct file *file);
+struct inode *btrfs_ilookup(struct super_block *s, u64 objectid,
+ struct btrfs_root *root, int wait);
struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid,
struct btrfs_root *root);
struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
int btrfs_update_inode(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct inode *inode);
+int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode);
+int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode);
+void btrfs_orphan_cleanup(struct btrfs_root *root);
+int btrfs_cont_expand(struct inode *inode, loff_t size);
/* ioctl.c */
long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
/* file.c */
int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync);
-int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end);
+int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end,
+ int skip_pinned);
int btrfs_check_file(struct btrfs_root *root, struct inode *inode);
extern struct file_operations btrfs_file_operations;
int btrfs_drop_extents(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct inode *inode,
u64 start, u64 end, u64 inline_limit, u64 *hint_block);
+int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct inode *inode, u64 start, u64 end);
int btrfs_release_file(struct inode *inode, struct file *file);
/* tree-defrag.c */
/* free-space-cache.c */
int btrfs_add_free_space(struct btrfs_block_group_cache *block_group,
u64 bytenr, u64 size);
+int btrfs_add_free_space_lock(struct btrfs_block_group_cache *block_group,
+ u64 offset, u64 bytes);
int btrfs_remove_free_space(struct btrfs_block_group_cache *block_group,
u64 bytenr, u64 size);
+int btrfs_remove_free_space_lock(struct btrfs_block_group_cache *block_group,
+ u64 offset, u64 bytes);
void btrfs_remove_free_space_cache(struct btrfs_block_group_cache
*block_group);
struct btrfs_free_space *btrfs_find_free_space(struct btrfs_block_group_cache
projects / linux-2.6-block.git / blobdiff