btrfs-progs: clear root dirty when we update the root

We don't currently use the bit to track whether or not the root is
dirty, but when we sync ctree.c it uses this bit to determine if we
should add the root to the dirty list.  Clear this bit when we update
the root so that the dirty tracking works properly when we sync ctree.c.

Signed-off-by: Josef Bacik <[email protected]>
Signed-off-by: David Sterba <[email protected]>

Author: josefbacik

kernel-shared/transaction.c

@@ -15,6 +15,7 @@
  */
 
 #include "kerncompat.h"
+#include "kernel-lib/bitops.h"
 #include "kernel-shared/disk-io.h"
 #include "kernel-shared/transaction.h"
 #include "kernel-shared/delayed-ref.h"
@@ -119,6 +120,7 @@ int commit_tree_roots(struct btrfs_trans_handle *trans,
 		next = fs_info->dirty_cowonly_roots.next;
 		list_del_init(next);
 		root = list_entry(next, struct btrfs_root, dirty_list);
+		clear_bit(BTRFS_ROOT_DIRTY, &root->state);
 		ret = update_cowonly_root(trans, root);
 		free_extent_buffer(root->commit_root);
 		root->commit_root = NULL;