diff options
| author | Julian Sun <sunjunchao@bytedance.com> | 2025-09-30 15:18:29 +0800 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-10-20 20:22:39 +0200 |
| commit | d6e6215907640801b1f407dc9e871b19ca5a3805 (patch) | |
| tree | 8395a9f976b2d27e8b52734f85a2fc130d298cd8 /include/linux | |
| parent | 1888635532fbbd6be4a4368621085c3a197279f8 (diff) | |
writeback: Add logging for slow writeback (exceeds sysctl_hung_task_timeout_secs)
When a writeback work lasts for sysctl_hung_task_timeout_secs, we want
to identify that there are tasks waiting for a long time-this helps us
pinpoint potential issues.
Additionally, recording the starting jiffies is useful when debugging a
crashed vmcore.
Signed-off-by: Julian Sun <sunjunchao@bytedance.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/backing-dev-defs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h index c8aa749790b1..610ef62b6a32 100644 --- a/include/linux/backing-dev-defs.h +++ b/include/linux/backing-dev-defs.h @@ -64,6 +64,7 @@ struct wb_completion { atomic_t cnt; wait_queue_head_t *waitq; unsigned long progress_stamp; /* The jiffies when slow progress is detected */ + unsigned long wait_start; /* The jiffies when waiting for the writeback work to finish */ }; #define __WB_COMPLETION_INIT(_waitq) \ |