Btrfs: tree logging unlink/rename fixes

[pandora-kernel.git] / fs / btrfs / ctree.h

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 82491ba..2737fac 100644 (file)
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -401,15 +401,16 @@ struct btrfs_path {
        int locks[BTRFS_MAX_LEVEL];
        int reada;
        /* keep some upper locks as we walk down */
-       int keep_locks;
-       int skip_locking;
        int lowest_level;
 
        /*
         * set by btrfs_split_item, tells search_slot to keep all locks
         * and to force calls to keep space in the nodes
         */
-       int search_for_split;
+       unsigned int search_for_split:1;
+       unsigned int keep_locks:1;
+       unsigned int skip_locking:1;
+       unsigned int leave_spinning:1;
 };
 
 /*
@@ -688,15 +689,18 @@ struct btrfs_fs_info {
        struct rb_root block_group_cache_tree;
 
        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;
-       u64 last_trans_new_blockgroup;
+
+       /*
+        * this is updated to the current trans every time a full commit
+        * is required instead of the faster short fsync log commits
+        */
+       u64 last_trans_log_full_commit;
        u64 open_ioctl_trans;
        unsigned long mount_opt;
        u64 max_extent;
@@ -717,12 +721,12 @@ struct btrfs_fs_info {
        struct mutex tree_log_mutex;
        struct mutex transaction_kthread_mutex;
        struct mutex cleaner_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;
@@ -781,10 +785,22 @@ struct btrfs_fs_info {
        atomic_t throttle_gen;
 
        u64 total_pinned;
+
+       /* protected by the delalloc lock, used to keep from writing
+        * metadata until there is a nice batch
+        */
+       u64 dirty_metadata_bytes;
        struct list_head dirty_cowonly_roots;
 
        struct btrfs_fs_devices *fs_devices;
+
+       /*
+        * the space_info list is almost entirely read only.  It only changes
+        * when we add a new raid type to the FS, and that happens
+        * very rarely.  RCU is used to protect it.
+        */
        struct list_head space_info;
+
        spinlock_t delalloc_lock;
        spinlock_t new_trans_lock;
        u64 delalloc_bytes;
@@ -1697,18 +1713,15 @@ static inline struct dentry *fdentry(struct file *file)
 }
 
 /* extent-tree.c */
+int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
+                          struct btrfs_root *root, unsigned long count);
 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_exist(struct btrfs_trans_handle *trans,
                          struct btrfs_root *root, u64 objectid, 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 btrfs_block_group_cache *btrfs_lookup_block_group(
                                                 struct btrfs_fs_info *info,
@@ -1770,7 +1783,7 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
                         u64 root_objectid, u64 ref_generation,
                         u64 owner_objectid);
 int btrfs_update_extent_ref(struct btrfs_trans_handle *trans,
-                           struct btrfs_root *root, u64 bytenr,
+                           struct btrfs_root *root, u64 bytenr, u64 num_bytes,
                            u64 orig_parent, u64 parent,
                            u64 root_objectid, u64 ref_generation,
                            u64 owner_objectid);
@@ -1797,6 +1810,8 @@ 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);
+void btrfs_clear_space_info_full(struct btrfs_fs_info *info);
+
 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);
@@ -1829,7 +1844,7 @@ int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key,
 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, u64 prealloc_dest);
+                   struct extent_buffer **cow_ret);
 int btrfs_copy_root(struct btrfs_trans_handle *trans,
                      struct btrfs_root *root,
                      struct extent_buffer *buf,