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-rw-r--r--fs/btrfs/transaction.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h
index dd7c3eea08ad..364cfbb4c5c5 100644
--- a/fs/btrfs/transaction.h
+++ b/fs/btrfs/transaction.h
@@ -96,6 +96,13 @@ struct btrfs_transaction {
spinlock_t releasing_ebs_lock;
struct list_head releasing_ebs;
+
+ /*
+ * The number of bytes currently reserved, by all transaction handles
+ * attached to this transaction, for metadata extents of the chunk tree.
+ */
+ atomic64_t chunk_bytes_reserved;
+ wait_queue_head_t chunk_reserve_wait;
};
#define __TRANS_FREEZABLE (1U << 0)