Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs

Pull btrfs fixes from Chris Mason:
 "This is an assortment of crash fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: stop all workers before cleaning up roots
  Btrfs: fix use-after-free bug during umount
  Btrfs: init relocate extent_io_tree with a mapping
  btrfs: Drop inode if inode root is NULL
  Btrfs: don't delete fs_roots until after we cleanup the transaction

1 files changed, 5 insertions, 5 deletions

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index e7b3cb5286a5..b8b60b660c8f 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2859,8 +2859,8 @@ fail_qgroup:
         btrfs_free_qgroup_config(fs_info);
 fail_trans_kthread:
         kthread_stop(fs_info->transaction_kthread);
-        del_fs_roots(fs_info);
         btrfs_cleanup_transaction(fs_info->tree_root);
+        del_fs_roots(fs_info);
 fail_cleaner:
         kthread_stop(fs_info->cleaner_kthread);
 
@@ -3512,15 +3512,15 @@ int close_ctree(struct btrfs_root *root)
                        percpu_counter_sum(&fs_info->delalloc_bytes));
         }
 
-        free_root_pointers(fs_info, 1);
-
         btrfs_free_block_groups(fs_info);
 
+        btrfs_stop_all_workers(fs_info);
+
         del_fs_roots(fs_info);
 
-        iput(fs_info->btree_inode);
+        free_root_pointers(fs_info, 1);
 
-        btrfs_stop_all_workers(fs_info);
+        iput(fs_info->btree_inode);
 
 #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
         if (btrfs_test_opt(root, CHECK_INTEGRITY))