Btrfs: reserve space for block groups
This changes our delayed refs calculations to include the space needed
to write back dirty block groups.
Signed-off-by: Chris Mason <clm@fb.com>
diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h
index 96b189b..4cb0ae2 100644
--- a/fs/btrfs/transaction.h
+++ b/fs/btrfs/transaction.h
@@ -64,6 +64,7 @@
struct list_head pending_ordered;
struct list_head switch_commits;
struct list_head dirty_bgs;
+ u64 num_dirty_bgs;
spinlock_t dirty_bgs_lock;
struct btrfs_delayed_ref_root delayed_refs;
int aborted;