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mm: rename global_page_state to global_zone_page_state

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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/[email protected]

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Michal Hocko <[email protected]>
Signed-off-by: Johannes Weiner <[email protected]>
Cc: Tetsuo Handa <[email protected]>
Cc: Josef Bacik <[email protected]>
Cc: Vladimir Davydov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Michal Hocko 2017-09-06 16:23:36 -07:00 • committed by Linus Torvalds
commit c41f012ade
9 changed files with 25 additions and 25 deletions
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10
fs/proc/meminfo.c
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@ -80,7 +80,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
show_val_kb(m, "Active(file): ", pages[LRU_ACTIVE_FILE]);
show_val_kb(m, "Inactive(file): ", pages[LRU_INACTIVE_FILE]);
show_val_kb(m, "Unevictable: ", pages[LRU_UNEVICTABLE]);
show_val_kb(m, "Mlocked: ", global_page_state(NR_MLOCK));
show_val_kb(m, "Mlocked: ", global_zone_page_state(NR_MLOCK));
#ifdef CONFIG_HIGHMEM
show_val_kb(m, "HighTotal: ", i.totalhigh);
@ -114,9 +114,9 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
show_val_kb(m, "SUnreclaim: ",
global_node_page_state(NR_SLAB_UNRECLAIMABLE));
seq_printf(m, "KernelStack: %8lu kB\n",
global_page_state(NR_KERNEL_STACK_KB));
global_zone_page_state(NR_KERNEL_STACK_KB));
show_val_kb(m, "PageTables: ",
global_page_state(NR_PAGETABLE));
global_zone_page_state(NR_PAGETABLE));
#ifdef CONFIG_QUICKLIST
show_val_kb(m, "Quicklists: ", quicklist_total_size());
#endif
@ -124,7 +124,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
show_val_kb(m, "NFS_Unstable: ",
global_node_page_state(NR_UNSTABLE_NFS));
show_val_kb(m, "Bounce: ",
global_page_state(NR_BOUNCE));
global_zone_page_state(NR_BOUNCE));
show_val_kb(m, "WritebackTmp: ",
global_node_page_state(NR_WRITEBACK_TEMP));
show_val_kb(m, "CommitLimit: ", vm_commit_limit());
@ -151,7 +151,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
#ifdef CONFIG_CMA
show_val_kb(m, "CmaTotal: ", totalcma_pages);
show_val_kb(m, "CmaFree: ",
global_page_state(NR_FREE_CMA_PAGES));
global_zone_page_state(NR_FREE_CMA_PAGES));
#endif
hugetlb_report_meminfo(m);