btrfs-progs: move btrfs_extref_hash() to hash.h

[platform/upstream/btrfs-progs.git] / ctree.c

diff --git a/ctree.c b/ctree.c
index 6875bb4..d07ec7d 100644 (file)
--- a/ctree.c
+++ b/ctree.c
@@ -2580,7 +2580,9 @@ int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root
        unsigned long ptr;
 
        path = btrfs_alloc_path();
-       BUG_ON(!path);
+       if (!path)
+               return -ENOMEM;
+
        ret = btrfs_insert_empty_item(trans, root, path, cpu_key, data_size);
        if (!ret) {
                leaf = path->nodes[0];
@@ -2951,3 +2953,27 @@ int btrfs_previous_extent_item(struct btrfs_root *root,
        }
        return 1;
 }
+
+/*
+ * Search in extent tree to found next meta/data extent
+ * Caller needs to check for no-hole or skinny metadata features.
+ */
+int btrfs_next_extent_item(struct btrfs_root *root,
+                       struct btrfs_path *path, u64 max_objectid)
+{
+       struct btrfs_key found_key;
+       int ret;
+
+       while (1) {
+               ret = btrfs_next_item(root, path);
+               if (ret)
+                       return ret;
+               btrfs_item_key_to_cpu(path->nodes[0], &found_key,
+                                     path->slots[0]);
+               if (found_key.objectid > max_objectid)
+                       return 1;
+               if (found_key.type == BTRFS_EXTENT_ITEM_KEY ||
+                   found_key.type == BTRFS_METADATA_ITEM_KEY)
+               return 0;
+       }
+}