Btrfs: allow us to overcommit our enospc reservations

[linux-2.6-block.git] / fs / btrfs / ctree.h

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 47dea7118e0ecaab2d55aeb72314abb50670de28..1eafccb162eeaa6b2cb50ae74e66153e1cf137ef 100644 (file)
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -893,6 +893,10 @@ struct btrfs_fs_info {
        spinlock_t block_group_cache_lock;
        struct rb_root block_group_cache_tree;
 
+       /* keep track of unallocated space */
+       spinlock_t free_chunk_lock;
+       u64 free_chunk_space;
+
        struct extent_io_tree freed_extents[2];
        struct extent_io_tree *pinned_extents;