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-rw-r--r--fs/btrfs/ctree.h77
1 files changed, 46 insertions, 31 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index eee060f8811..82491ba8fa4 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -43,11 +43,7 @@ struct btrfs_ordered_sum;
#define BTRFS_ACL_NOT_CACHED ((void *)-1)
-#ifdef CONFIG_LOCKDEP
-# define BTRFS_MAX_LEVEL 7
-#else
-# define BTRFS_MAX_LEVEL 8
-#endif
+#define BTRFS_MAX_LEVEL 8
/* holds pointers to all of the tree roots */
#define BTRFS_ROOT_TREE_OBJECTID 1ULL
@@ -454,17 +450,11 @@ struct btrfs_timespec {
__le32 nsec;
} __attribute__ ((__packed__));
-typedef enum {
+enum btrfs_compression_type {
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 */
@@ -606,13 +596,27 @@ struct btrfs_block_group_item {
struct btrfs_space_info {
u64 flags;
- u64 total_bytes;
- u64 bytes_used;
- u64 bytes_pinned;
- u64 bytes_reserved;
- u64 bytes_readonly;
- int full;
- int force_alloc;
+
+ u64 total_bytes; /* total bytes in the space */
+ u64 bytes_used; /* total bytes used on disk */
+ u64 bytes_pinned; /* total bytes pinned, will be freed when the
+ transaction finishes */
+ u64 bytes_reserved; /* total bytes the allocator has reserved for
+ current allocations */
+ u64 bytes_readonly; /* total bytes that are read only */
+
+ /* delalloc accounting */
+ u64 bytes_delalloc; /* number of bytes reserved for allocation,
+ this space is not necessarily reserved yet
+ by the allocator */
+ u64 bytes_may_use; /* number of bytes that may be used for
+ delalloc */
+
+ int full; /* indicates that we cannot allocate any more
+ chunks for this space */
+ int force_alloc; /* set if we need to force a chunk alloc for
+ this space */
+
struct list_head list;
/* for block groups in our same type */
@@ -701,9 +705,7 @@ 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 tree_log_wait;
struct btrfs_super_block super_copy;
struct btrfs_super_block super_for_commit;
@@ -711,7 +713,6 @@ struct btrfs_fs_info {
struct super_block *sb;
struct inode *btree_inode;
struct backing_dev_info bdi;
- spinlock_t hash_lock;
struct mutex trans_mutex;
struct mutex tree_log_mutex;
struct mutex transaction_kthread_mutex;
@@ -730,10 +731,6 @@ struct btrfs_fs_info {
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;
- u64 tree_log_transid;
/*
* this is used by the balancing code to wait for all the pending
@@ -833,7 +830,14 @@ struct btrfs_root {
struct kobject root_kobj;
struct completion kobj_unregister;
struct mutex objectid_mutex;
+
struct mutex log_mutex;
+ wait_queue_head_t log_writer_wait;
+ wait_queue_head_t log_commit_wait[2];
+ atomic_t log_writers;
+ atomic_t log_commit[2];
+ unsigned long log_transid;
+ unsigned long log_batch;
u64 objectid;
u64 last_trans;
@@ -1721,7 +1725,8 @@ struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
u64 empty_size);
struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
- u64 bytenr, u32 blocksize);
+ u64 bytenr, u32 blocksize,
+ int level);
int btrfs_alloc_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 num_bytes, u64 parent, u64 min_bytes,
@@ -1791,6 +1796,16 @@ int btrfs_add_dead_reloc_root(struct btrfs_root *root);
int btrfs_cleanup_reloc_trees(struct btrfs_root *root);
int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len);
u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags);
+void btrfs_set_inode_space_info(struct btrfs_root *root, struct inode *ionde);
+int btrfs_check_metadata_free_space(struct btrfs_root *root);
+int btrfs_check_data_free_space(struct btrfs_root *root, struct inode *inode,
+ u64 bytes);
+void btrfs_free_reserved_data_space(struct btrfs_root *root,
+ struct inode *inode, u64 bytes);
+void btrfs_delalloc_reserve_space(struct btrfs_root *root, struct inode *inode,
+ u64 bytes);
+void btrfs_delalloc_free_space(struct btrfs_root *root, struct inode *inode,
+ u64 bytes);
/* ctree.c */
int btrfs_previous_item(struct btrfs_root *root,
struct btrfs_path *path, u64 min_objectid,
@@ -1840,7 +1855,9 @@ int btrfs_realloc_node(struct btrfs_trans_handle *trans,
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);
+void btrfs_set_path_blocking(struct btrfs_path *p);
+void btrfs_unlock_up_safe(struct btrfs_path *p, int level);
+
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,
@@ -2034,8 +2051,6 @@ int btrfs_merge_bio_hook(struct page *page, unsigned long offset,
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);