The patch titled
Subject: mm/page-writeback: use __this_cpu_inc() in account_page_dirtied()
has been added to the -mm tree. Its filename is
mm-page-writeback-use-__this_cpu_inc-in-account_page_dirtied.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-page-writeback-use-__this_cpu_inc-in-account_page_dirtied.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-page-writeback-use-__this_cpu_inc-in-account_page_dirtied.patch
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------------------------------------------------------
From: Chi Wu <wuchi.zero@xxxxxxxxx>
Subject: mm/page-writeback: use __this_cpu_inc() in account_page_dirtied()
As account_page_dirtied() was always protected by xa_lock_irqsave(), so
using __this_cpu_inc() is better.
Link: https://lkml.kernel.org/r/20210512144742.4764-1-wuchi.zero@xxxxxxxxx
Signed-off-by: Chi Wu <wuchi.zero@xxxxxxxxx>
Cc: Howard Cochran <hcochran@xxxxxxxxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: Miklos Szeredi <mszeredi@xxxxxxxxxx>
Cc: Sedat Dilek <sedat.dilek@xxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page-writeback.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/page-writeback.c~mm-page-writeback-use-__this_cpu_inc-in-account_page_dirtied
+++ a/mm/page-writeback.c
@@ -2445,7 +2445,7 @@ void account_page_dirtied(struct page *p
inc_wb_stat(wb, WB_DIRTIED);
task_io_account_write(PAGE_SIZE);
current->nr_dirtied++;
- this_cpu_inc(bdp_ratelimits);
+ __this_cpu_inc(bdp_ratelimits);
mem_cgroup_track_foreign_dirty(page, wb);
}
_
Patches currently in -mm which might be from wuchi.zero@xxxxxxxxx are
mm-page-writeback-fix-performance-when-bdis-share-of-ratio-is-0.patch
mm-page-writeback-update-the-comment-of-dirty-position-control.patch
mm-page-writeback-use-__this_cpu_inc-in-account_page_dirtied.patch
