Commit 1e5063d0 authored by Mark Fasheh's avatar Mark Fasheh
Browse files

btrfs: Don't BUG_ON alloc_path errors in replay_one_buffer() 



The two ->process_func call sites in tree-log.c which were ignoring a return
code have also been updated to gracefully exit as well.

Signed-off-by: default avatarMark Fasheh <mfasheh@suse.com>
parent d8926bb3

fs/btrfs/tree-log.c

+9 −3
Original line number Diff line number Diff line
@@ -1617,7 +1617,8 @@ static int replay_one_buffer(struct btrfs_root *log, struct extent_buffer *eb, 
		return 0;



	path = btrfs_alloc_path();

	BUG_ON(!path);

	if (!path)

		return -ENOMEM;



	nritems = btrfs_header_nritems(eb);

	for (i = 0; i < nritems; i++) {
@@ -1723,7 +1724,9 @@ static noinline int walk_down_log_tree(struct btrfs_trans_handle *trans, 
			return -ENOMEM;



		if (*level == 1) {

			wc->process_func(root, next, wc, ptr_gen);

			ret = wc->process_func(root, next, wc, ptr_gen);

			if (ret)

				return ret;



			path->slots[*level]++;

			if (wc->free) {
@@ -1788,8 +1791,11 @@ static noinline int walk_up_log_tree(struct btrfs_trans_handle *trans, 
				parent = path->nodes[*level + 1];



			root_owner = btrfs_header_owner(parent);

			wc->process_func(root, path->nodes[*level], wc,

			ret = wc->process_func(root, path->nodes[*level], wc,

				 btrfs_header_generation(path->nodes[*level]));

			if (ret)

				return ret;



			if (wc->free) {

				struct extent_buffer *next;