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> Reviewed-by: Jan Kara <jack@xxxxxxx> Cc: Howard Cochran <hcochran@xxxxxxxxxxxxxxxx> 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); } _
