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>
(cherry picked from commit 306c8b68c82dfe6b7c9e5b61985760ad5d089205)

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 6d97b3e8b5526ca5ef58eddf2fe7a4d24c069232..4c63b166b5d3074c37ffb630942f199aa14473a1 100644 (file)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2219,6 +2219,7 @@ fail_chunk_root:
        free_extent_buffer(chunk_root->commit_root);
 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);