1 files changed, 23 insertions, 4 deletions

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 98a873838717..837435ce84ca 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -481,7 +481,7 @@ struct btrfs_shared_data_ref {
 
 struct btrfs_extent_inline_ref {
         u8 type;
-        u64 offset;
+        __le64 offset;
 } __attribute__ ((__packed__));
 
 /* old style backrefs item */
@@ -689,6 +689,7 @@ struct btrfs_space_info {
         struct list_head block_groups;
         spinlock_t lock;
         struct rw_semaphore groups_sem;
+        atomic_t caching_threads;
 };
 
 /*
@@ -707,6 +708,9 @@ struct btrfs_free_cluster {
         /* first extent starting offset */
         u64 window_start;
 
+        /* if this cluster simply points at a bitmap in the block group */
+        bool points_to_bitmap;
+
         struct btrfs_block_group_cache *block_group;
         /*
          * when a cluster is allocated from a block group, we put the
@@ -716,24 +720,37 @@ struct btrfs_free_cluster {
         struct list_head block_group_list;
 };
 
+enum btrfs_caching_type {
+        BTRFS_CACHE_NO          = 0,
+        BTRFS_CACHE_STARTED     = 1,
+        BTRFS_CACHE_FINISHED    = 2,
+};
+
 struct btrfs_block_group_cache {
         struct btrfs_key key;
         struct btrfs_block_group_item item;
+        struct btrfs_fs_info *fs_info;
         spinlock_t lock;
-        struct mutex cache_mutex;
         u64 pinned;
         u64 reserved;
         u64 flags;
-        int cached;
+        u64 sectorsize;
+        int extents_thresh;
+        int free_extents;
+        int total_bitmaps;
         int ro;
         int dirty;
 
+        /* cache tracking stuff */
+        wait_queue_head_t caching_q;
+        int cached;
+
         struct btrfs_space_info *space_info;
 
         /* free space cache stuff */
         spinlock_t tree_lock;
-        struct rb_root free_space_bytes;
         struct rb_root free_space_offset;
+        u64 free_space;
 
         /* block group cache stuff */
         struct rb_node cache_node;
@@ -808,6 +825,7 @@ struct btrfs_fs_info {
         struct mutex drop_mutex;
         struct mutex volume_mutex;
         struct mutex tree_reloc_mutex;
+        struct rw_semaphore extent_commit_sem;
 
         /*
          * this protects the ordered operations list only while we are
@@ -1988,6 +2006,7 @@ 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);
+void btrfs_free_pinned_extents(struct btrfs_fs_info *info);
 /* ctree.c */
 int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key,
                      int level, int *slot);