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Commit ee1be862 authored by Christoph Lameter's avatar Christoph Lameter Committed by Tejun Heo
Browse files

fs: Use this_cpu_inc_return in buffer.c 



__this_cpu_inc can create a single instruction with the same effect
as the _get_cpu_var(..)++ construct in buffer.c.

Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Acked-by: default avatarH. Peter Anvin <hpa@zytor.com>
Signed-off-by: default avatarChristoph Lameter <cl@linux.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent cfb82434

fs/buffer.c

+1 −1
Original line number Diff line number Diff line
@@ -3201,7 +3201,7 @@ static void recalc_bh_state(void) 
	int i;

	int tot = 0;



	if (__get_cpu_var(bh_accounting).ratelimit++ < 4096)

	if (__this_cpu_inc_return(bh_accounting.ratelimit) - 1 < 4096)

		return;

	__this_cpu_write(bh_accounting.ratelimit, 0);

	for_each_online_cpu(i)