@@ -9196,6 +9196,63 @@ out:
return err;
}
+/*
+ * Check if a dev extent item is referred correctly by its chunk
+ */
+static int check_dev_extent_item(struct btrfs_fs_info *fs_info,
+ struct extent_buffer *eb, int slot)
+{
+ struct btrfs_root *chunk_root = fs_info->chunk_root;
+ struct btrfs_dev_extent *ptr;
+ struct btrfs_path path;
+ struct btrfs_key key;
+ struct btrfs_key found_key;
+ struct btrfs_chunk *chunk;
+ struct extent_buffer *l;
+ int num_stripes;
+ u64 length;
+ int i;
+ int found_chunk = 0;
+ int ret;
+
+ btrfs_item_key_to_cpu(eb, &found_key, slot);
+ ptr = btrfs_item_ptr(eb, slot, struct btrfs_dev_extent);
+ length = btrfs_dev_extent_length(eb, ptr);
+
+ key.objectid = btrfs_dev_extent_chunk_objectid(eb, ptr);
+ key.type = BTRFS_CHUNK_ITEM_KEY;
+ key.offset = btrfs_dev_extent_chunk_offset(eb, ptr);
+
+ btrfs_init_path(&path);
+ ret = btrfs_search_slot(NULL, chunk_root, &key, &path, 0, 0);
+ if (ret)
+ goto out;
+
+ l = path.nodes[0];
+ chunk = btrfs_item_ptr(l, path.slots[0], struct btrfs_chunk);
+ if (btrfs_chunk_length(l, chunk) != length)
+ goto out;
+
+ num_stripes = btrfs_chunk_num_stripes(l, chunk);
+ for (i = 0; i < num_stripes; i++) {
+ u64 devid = btrfs_stripe_devid_nr(l, chunk, i);
+ u64 offset = btrfs_stripe_offset_nr(l, chunk, i);
+
+ if (devid == found_key.objectid && offset == found_key.offset) {
+ found_chunk= 1;
+ break;
+ }
+ }
+out:
+ btrfs_release_path(&path);
+ if (!found_chunk) {
+ error("Device extent[%llu, %llu, %llu] didn't find the relative chunk",
+ found_key.objectid, found_key.offset, length);
+ return REFERENCER_MISSING;
+ }
+ return 0;
+}
+
static int btrfs_fsck_reinit_root(struct btrfs_trans_handle *trans,
struct btrfs_root *root, int overwrite)
{