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-rw-r--r--fs/btrfs/tree-defrag.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/btrfs/tree-defrag.c b/fs/btrfs/tree-defrag.c
index b3bb5bbad76e..6f57d0889b1e 100644
--- a/fs/btrfs/tree-defrag.c
+++ b/fs/btrfs/tree-defrag.c
@@ -23,6 +23,10 @@
#include "transaction.h"
#include "locking.h"
+/* defrag all the leaves in a given btree. If cache_only == 1, don't read things
+ * from disk, otherwise read all the leaves and try to get key order to
+ * better reflect disk order
+ */
int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
struct btrfs_root *root, int cache_only)
{