* [PATCH] jbd2: add missing tracepoint for reserved handle
@ 2019-08-15 13:44 Xiaoguang Wang
2019-08-25 3:12 ` Theodore Y. Ts'o
0 siblings, 1 reply; 2+ messages in thread
From: Xiaoguang Wang @ 2019-08-15 13:44 UTC (permalink / raw)
To: linux-ext4; +Cc: Xiaoguang Wang
This issue was found when I use ebpf to trace every jbd2
handle's running info in dioread_nolock case.
Signed-off-by: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
---
fs/jbd2/transaction.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index 990e7b5062e7..afc06daee5bb 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -569,6 +569,9 @@ int jbd2_journal_start_reserved(handle_t *handle, unsigned int type,
}
handle->h_type = type;
handle->h_line_no = line_no;
+ trace_jbd2_handle_start(journal->j_fs_dev->bd_dev,
+ handle->h_transaction->t_tid, type,
+ line_no, handle->h_buffer_credits);
return 0;
}
EXPORT_SYMBOL(jbd2_journal_start_reserved);
--
2.17.2
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2019-08-25 3:12 ` Theodore Y. Ts'o
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