Changelog:
v4 -> v5:
* indent the comment
After commit 839a8e86("writeback: replace custom worker pool implementation
with unbound workqueue"), there is no bdi forker thread any more. However,
WB_REASON_FORKER_THREAD is still used due to it is TPs userland visible
and we won't be exposing exactly the same information with just a different
name.
Reviewed-by: Tejun Heo <t...@kernel.org>
Signed-off-by: Wanpeng Li <liw...@linux.vnet.ibm.com>
---
include/linux/writeback.h | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index 8b5cec4..703a48a 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -47,6 +47,12 @@ enum wb_reason {
WB_REASON_LAPTOP_TIMER,
WB_REASON_FREE_MORE_MEM,
WB_REASON_FS_FREE_SPACE,
+ /*
+ * There is no bdi forker thread any more and works are done
+ * by emergency worker, however, this is TPs userland visible
+ * and we'll be exposing exactly the same information,
+ * so it has a mismatch name.
+ */
WB_REASON_FORKER_THREAD,
WB_REASON_MAX,
--
1.7.5.4
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