jbd2-add-missing-tracepoint-for-reserved-handle

   1 jbd2: add missing tracepoint for reserved handle
   2
   3 From: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
   4
   5 This issue was found when I use ebpf to trace every jbd2
   6 handle's running info in dioread_nolock case.
   7
   8 Signed-off-by: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
   9 Signed-off-by: Theodore Ts'o <tytso@mit.edu>
  10 ---
  11  fs/jbd2/transaction.c | 3 +++
  12  1 file changed, 3 insertions(+)
  13
  14 diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
  15 index 990e7b5062e7..afc06daee5bb 100644
  16 --- a/fs/jbd2/transaction.c
  17 +++ b/fs/jbd2/transaction.c
  18 @@ -569,6 +569,9 @@ int jbd2_journal_start_reserved(handle_t *handle, unsigned int type,
  19         }
  20         handle->h_type = type;
  21         handle->h_line_no = line_no;
  22 +       trace_jbd2_handle_start(journal->j_fs_dev->bd_dev,
  23 +                               handle->h_transaction->t_tid, type,
  24 +                               line_no, handle->h_buffer_credits);
  25         return 0;
  26  }
  27  EXPORT_SYMBOL(jbd2_journal_start_reserved);