Commit 3a47e877 authored by Qi Zheng's avatar Qi Zheng Committed by Andrew Morton
Browse files

mm: vmstat: correct the comment above preempt_disable_nested() 

The comment explaining why these parts use preempt_disable_nested() is in
__mod_zone_page_state(), not in __mod_node_page_state(), so we should see
__mod_zone_page_state(). Just correct it.

Link: https://lkml.kernel.org/r/20251110084437.46701-1-qi.zheng@linux.dev


Signed-off-by: default avatarQi Zheng <zhengqi.arch@bytedance.com>
Acked-by: default avatarVlastimil Babka <vbabka@suse.cz>
Acked-by: default avatarHarry Yoo <harry.yoo@oracle.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 2ab7f1bb

mm/vmstat.c

+5 −5
Original line number Diff line number Diff line
@@ -392,7 +392,7 @@ void __mod_node_page_state(struct pglist_data *pgdat, enum node_stat_item item, 
		delta >>= PAGE_SHIFT;

	}



	/* See __mod_node_page_state */

	/* See __mod_zone_page_state() */

	preempt_disable_nested();



	x = delta + __this_cpu_read(*p);
@@ -438,7 +438,7 @@ void __inc_zone_state(struct zone *zone, enum zone_stat_item item) 
	s8 __percpu *p = pcp->vm_stat_diff + item;

	s8 v, t;



	/* See __mod_node_page_state */

	/* See __mod_zone_page_state() */

	preempt_disable_nested();



	v = __this_cpu_inc_return(*p);
@@ -461,7 +461,7 @@ void __inc_node_state(struct pglist_data *pgdat, enum node_stat_item item) 


	VM_WARN_ON_ONCE(vmstat_item_in_bytes(item));



	/* See __mod_node_page_state */

	/* See __mod_zone_page_state() */

	preempt_disable_nested();



	v = __this_cpu_inc_return(*p);
@@ -494,7 +494,7 @@ void __dec_zone_state(struct zone *zone, enum zone_stat_item item) 
	s8 __percpu *p = pcp->vm_stat_diff + item;

	s8 v, t;



	/* See __mod_node_page_state */

	/* See __mod_zone_page_state() */

	preempt_disable_nested();



	v = __this_cpu_dec_return(*p);
@@ -517,7 +517,7 @@ void __dec_node_state(struct pglist_data *pgdat, enum node_stat_item item) 


	VM_WARN_ON_ONCE(vmstat_item_in_bytes(item));



	/* See __mod_node_page_state */

	/* See __mod_zone_page_state() */

	preempt_disable_nested();



	v = __this_cpu_dec_return(*p);