btrfs: expand btrfs_find_item if found_key is NULL

[uclinux-h8/linux.git] / fs / btrfs / disk-io.c

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 3096512..8d48660 100644 (file)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1630,6 +1630,8 @@ struct btrfs_root *btrfs_get_fs_root(struct btrfs_fs_info *fs_info,
                                     bool check_ref)
 {
        struct btrfs_root *root;
+       struct btrfs_path *path;
+       struct btrfs_key key;
        int ret;
 
        if (location->objectid == BTRFS_ROOT_TREE_OBJECTID)
@@ -1669,8 +1671,17 @@ again:
        if (ret)
                goto fail;
 
-       ret = btrfs_find_item(fs_info->tree_root, NULL, BTRFS_ORPHAN_OBJECTID,
-                       location->objectid, BTRFS_ORPHAN_ITEM_KEY, NULL);
+       path = btrfs_alloc_path();
+       if (!path) {
+               ret = -ENOMEM;
+               goto fail;
+       }
+       key.objectid = BTRFS_ORPHAN_OBJECTID;
+       key.type = BTRFS_ORPHAN_ITEM_KEY;
+       key.offset = location->objectid;
+
+       ret = btrfs_search_slot(NULL, fs_info->tree_root, &key, path, 0, 0);
+       btrfs_free_path(path);
        if (ret < 0)
                goto fail;
        if (ret == 0)
@@ -4121,12 +4132,6 @@ again:
                if (ret)
                        break;
 
-               /* opt_discard */
-               if (btrfs_test_opt(root, DISCARD))
-                       ret = btrfs_error_discard_extent(root, start,
-                                                        end + 1 - start,
-                                                        NULL);
-
                clear_extent_dirty(unpin, start, end, GFP_NOFS);
                btrfs_error_unpin_extent_range(root, start, end);
                cond_resched();