mm/vmstat: remove unused node and zone state helpers

Several helper functions for managing node and zone states have become
obsolete and no longer have any callers within the kernel.

  inc_node_state()
  inc_zone_state()
  dec_zone_state()

This commit removes the dead code.

Link: https://lkml.kernel.org/r/20251225210213.2553-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Joshua Hahn <joshua.hahnjy@gmail.com>
Acked-by: David Hildenbrand (Red Hat) <david@kernel.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
index 3398a345bda89e31a087a82ad2d6eb7c9f40cb5f..cf559e2ce1d499420a77796692911e6ff4137f00 100644 (file)
--- a/include/linux/vmstat.h
+++ b/include/linux/vmstat.h
@@ -286,10 +286,8 @@ void mod_node_page_state(struct pglist_data *, enum node_stat_item, long);
 void inc_node_page_state(struct page *, enum node_stat_item);
 void dec_node_page_state(struct page *, enum node_stat_item);
 
-extern void inc_node_state(struct pglist_data *, enum node_stat_item);
 extern void __inc_zone_state(struct zone *, enum zone_stat_item);
 extern void __inc_node_state(struct pglist_data *, enum node_stat_item);
-extern void dec_zone_state(struct zone *, enum zone_stat_item);
 extern void __dec_zone_state(struct zone *, enum zone_stat_item);
 extern void __dec_node_state(struct pglist_data *, enum node_stat_item);
 
@@ -394,10 +392,6 @@ static inline void __dec_node_page_state(struct page *page,
 #define dec_node_page_state __dec_node_page_state
 #define mod_node_page_state __mod_node_page_state
 
-#define inc_zone_state __inc_zone_state
-#define inc_node_state __inc_node_state
-#define dec_zone_state __dec_zone_state
-
 #define set_pgdat_percpu_threshold(pgdat, callback) { }
 
 static inline void refresh_zone_stat_thresholds(void) { }

diff --git a/mm/vmstat.c b/mm/vmstat.c
index bd2af431ff86287e6ac256104ed733f116f3fa6c..6ae8891c9693eb8de6debe3a5c486ebfc28dd58a 100644 (file)
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -672,11 +672,6 @@ void mod_node_page_state(struct pglist_data *pgdat, enum node_stat_item item,
 }
 EXPORT_SYMBOL(mod_node_page_state);
 
-void inc_node_state(struct pglist_data *pgdat, enum node_stat_item item)
-{
-       mod_node_state(pgdat, item, 1, 1);
-}
-
 void inc_node_page_state(struct page *page, enum node_stat_item item)
 {
        mod_node_state(page_pgdat(page), item, 1, 1);
@@ -725,16 +720,6 @@ void dec_zone_page_state(struct page *page, enum zone_stat_item item)
 }
 EXPORT_SYMBOL(dec_zone_page_state);
 
-void inc_node_state(struct pglist_data *pgdat, enum node_stat_item item)
-{
-       unsigned long flags;
-
-       local_irq_save(flags);
-       __inc_node_state(pgdat, item);
-       local_irq_restore(flags);
-}
-EXPORT_SYMBOL(inc_node_state);
-
 void mod_node_page_state(struct pglist_data *pgdat, enum node_stat_item item,
                                        long delta)
 {