diff options
Diffstat (limited to 'kernel/fs/btrfs/root-tree.c')
| -rw-r--r-- | kernel/fs/btrfs/root-tree.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/kernel/fs/btrfs/root-tree.c b/kernel/fs/btrfs/root-tree.c index 360a728a6..2c849b08a 100644 --- a/kernel/fs/btrfs/root-tree.c +++ b/kernel/fs/btrfs/root-tree.c @@ -45,12 +45,13 @@ static void btrfs_read_root_item(struct extent_buffer *eb, int slot, if (!need_reset && btrfs_root_generation(item) != btrfs_root_generation_v2(item)) { if (btrfs_root_generation_v2(item) != 0) { - printk(KERN_WARNING "BTRFS: mismatching " + btrfs_warn(eb->fs_info, + "mismatching " "generation and generation_v2 " "found in root item. This root " "was probably mounted with an " "older kernel. Resetting all " - "new fields.\n"); + "new fields."); } need_reset = 1; } @@ -141,7 +142,7 @@ int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root int ret; int slot; unsigned long ptr; - int old_len; + u32 old_len; path = btrfs_alloc_path(); if (!path) @@ -283,7 +284,7 @@ int btrfs_find_orphan_roots(struct btrfs_root *tree_root) trans = btrfs_join_transaction(tree_root); if (IS_ERR(trans)) { err = PTR_ERR(trans); - btrfs_error(tree_root->fs_info, err, + btrfs_std_error(tree_root->fs_info, err, "Failed to start trans to delete " "orphan item"); break; @@ -292,7 +293,7 @@ int btrfs_find_orphan_roots(struct btrfs_root *tree_root) root_key.objectid); btrfs_end_transaction(trans, tree_root); if (err) { - btrfs_error(tree_root->fs_info, err, + btrfs_std_error(tree_root->fs_info, err, "Failed to delete root orphan " "item"); break; @@ -309,8 +310,16 @@ int btrfs_find_orphan_roots(struct btrfs_root *tree_root) set_bit(BTRFS_ROOT_ORPHAN_ITEM_INSERTED, &root->state); err = btrfs_insert_fs_root(root->fs_info, root); + /* + * The root might have been inserted already, as before we look + * for orphan roots, log replay might have happened, which + * triggers a transaction commit and qgroup accounting, which + * in turn reads and inserts fs roots while doing backref + * walking. + */ + if (err == -EEXIST) + err = 0; if (err) { - BUG_ON(err == -EEXIST); btrfs_free_fs_root(root); break; } |