Add support for defragging files via btrfsctl -d. Avoid OOM on extent tree
defrag.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/tree-defrag.c b/fs/btrfs/tree-defrag.c
index 35fd20d..4205971 100644
--- a/fs/btrfs/tree-defrag.c
+++ b/fs/btrfs/tree-defrag.c
@@ -113,6 +113,8 @@
}
WARN_ON(*level < 0);
WARN_ON(*level >= BTRFS_MAX_LEVEL);
+ clear_buffer_defrag(path->nodes[*level]);
+ clear_buffer_defrag_done(path->nodes[*level]);
btrfs_block_release(root, path->nodes[*level]);
path->nodes[*level] = NULL;
*level += 1;
@@ -143,6 +145,7 @@
return 0;
} else {
clear_buffer_defrag(path->nodes[*level]);
+ clear_buffer_defrag_done(path->nodes[*level]);
btrfs_block_release(root, path->nodes[*level]);
path->nodes[*level] = NULL;
*level = i + 1;