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Commit 1372f8e6 authored by Chris Mason's avatar Chris Mason
Browse files

Properly call btrfs_search_slot while shrinking 



The shrinking code used btrfs_next_leaf to find the next item, but
this does not cow the blocks it touches.  This fix calls search_slot after
finding the next item to do appropriate cow and balancing.

Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent 25524883

fs/btrfs/extent-tree.c

+9 −1
Original line number Diff line number Diff line
@@ -2434,7 +2434,15 @@ int btrfs_shrink_extent_tree(struct btrfs_root *root, u64 new_size) 
				break;

			}

			leaf = path->nodes[0];

			nritems = btrfs_header_nritems(leaf);

			btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);



			/*

			 * btrfs_next_leaf doesn't cow buffers, we have to

			 * do the search again

			 */

			memcpy(&key, &found_key, sizeof(key));

			btrfs_release_path(root, path);

			continue;

		}



		btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);