Btrfs: stop the readahead threads on failed mount

If we don't stop them, they linger around corrupting
memory by using pointers to freed things.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 40a62b98008700a7429c93b2b8ca116eb7a3cb8d..e532892431f46b1d6dbfbb8f0d846dcf6256f42b 100644 (file)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2444,6 +2444,7 @@ fail_tree_roots:
 
 fail_sb_buffer:
        btrfs_stop_workers(&fs_info->generic_worker);
+       btrfs_stop_workers(&fs_info->readahead_workers);
        btrfs_stop_workers(&fs_info->fixup_workers);
        btrfs_stop_workers(&fs_info->delalloc_workers);
        btrfs_stop_workers(&fs_info->workers);