From c41f012ade0b95b0a6e25c7150673e0554736165 Mon Sep 17 00:00:00 2001 From: Michal Hocko Date: Wed, 6 Sep 2017 16:23:36 -0700 Subject: mm: rename global_page_state to global_zone_page_state global_page_state is error prone as a recent bug report pointed out [1]. It only returns proper values for zone based counters as the enum it gets suggests. We already have global_node_page_state so let's rename global_page_state to global_zone_page_state to be more explicit here. All existing users seems to be correct: $ git grep "global_page_state(NR_" | sed 's@.*(\(NR_[A-Z_]*\)).*@\1@' | sort | uniq -c 2 NR_BOUNCE 2 NR_FREE_CMA_PAGES 11 NR_FREE_PAGES 1 NR_KERNEL_STACK_KB 1 NR_MLOCK 2 NR_PAGETABLE This patch shouldn't introduce any functional change. [1] http://lkml.kernel.org/r/201707260628.v6Q6SmaS030814@www262.sakura.ne.jp Link: http://lkml.kernel.org/r/20170801134256.5400-2-hannes@cmpxchg.org Signed-off-by: Michal Hocko Signed-off-by: Johannes Weiner Cc: Tetsuo Handa Cc: Josef Bacik Cc: Vladimir Davydov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/swap.h | 4 ++-- include/linux/vmstat.h | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) (limited to 'include') diff --git a/include/linux/swap.h b/include/linux/swap.h index 461cf107ad52..76f1632eea5a 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -263,8 +263,8 @@ extern unsigned long totalreserve_pages; extern unsigned long nr_free_buffer_pages(void); extern unsigned long nr_free_pagecache_pages(void); -/* Definition of global_page_state not available yet */ -#define nr_free_pages() global_page_state(NR_FREE_PAGES) +/* Definition of global_zone_page_state not available yet */ +#define nr_free_pages() global_zone_page_state(NR_FREE_PAGES) /* linux/mm/swap.c */ diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index b3d85f30d424..97e11ab573f0 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -123,7 +123,7 @@ static inline void node_page_state_add(long x, struct pglist_data *pgdat, atomic_long_add(x, &vm_node_stat[item]); } -static inline unsigned long global_page_state(enum zone_stat_item item) +static inline unsigned long global_zone_page_state(enum zone_stat_item item) { long x = atomic_long_read(&vm_zone_stat[item]); #ifdef CONFIG_SMP @@ -199,7 +199,7 @@ extern unsigned long sum_zone_node_page_state(int node, extern unsigned long node_page_state(struct pglist_data *pgdat, enum node_stat_item item); #else -#define sum_zone_node_page_state(node, item) global_page_state(item) +#define sum_zone_node_page_state(node, item) global_zone_page_state(item) #define node_page_state(node, item) global_node_page_state(item) #endif /* CONFIG_NUMA */ -- cgit