[patch 056/156] mm/vmstat.c: use helper macro abs()

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From: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Subject: mm/vmstat.c: use helper macro abs()

Use helper macro abs() to simplify the "x > t || x < -t" cmp.

Link: https://lkml.kernel.org/r/20200905084008.15748-1-linmiaohe@xxxxxxxxxx
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 mm/vmstat.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/mm/vmstat.c~mm-vmstat-use-helper-macro-abs
+++ a/mm/vmstat.c
@@ -325,7 +325,7 @@ void __mod_zone_page_state(struct zone *
 
 	t = __this_cpu_read(pcp->stat_threshold);
 
-	if (unlikely(x > t || x < -t)) {
+	if (unlikely(abs(x) > t)) {
 		zone_page_state_add(x, zone, item);
 		x = 0;
 	}
@@ -350,7 +350,7 @@ void __mod_node_page_state(struct pglist
 
 	t = __this_cpu_read(pcp->stat_threshold);
 
-	if (unlikely(x > t || x < -t)) {
+	if (unlikely(abs(x) > t)) {
 		node_page_state_add(x, pgdat, item);
 		x = 0;
 	}
@@ -511,7 +511,7 @@ static inline void mod_zone_state(struct
 		o = this_cpu_read(*p);
 		n = delta + o;
 
-		if (n > t || n < -t) {
+		if (abs(n) > t) {
 			int os = overstep_mode * (t >> 1) ;
 
 			/* Overflow must be added to zone counters */
@@ -573,7 +573,7 @@ static inline void mod_node_state(struct
 		o = this_cpu_read(*p);
 		n = delta + o;
 
-		if (n > t || n < -t) {
+		if (abs(n) > t) {
 			int os = overstep_mode * (t >> 1) ;
 
 			/* Overflow must be added to node counters */
_



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