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mm: remove vm_total_pages

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The global variable "vm_total_pages" is a relic from older days.  There is
only a single user that reads the variable - build_all_zonelists() - and
the first thing it does is update it.

Use a local variable in build_all_zonelists() instead and remove the
global variable.

Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Minchan Kim <minchan@kernel.org>
Link: http://lkml.kernel.org/r/20200619132410.23859-2-david@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Hildenbrand 2020-08-06 23:25:27 -07:00 • committed by Linus Torvalds
parent f80b08fc44
commit 0a18e60788
5 changed files with 4 additions and 13 deletions
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2
mm/page_alloc.c
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@ -5912,6 +5912,8 @@ build_all_zonelists_init(void)
*/
void __ref build_all_zonelists(pg_data_t *pgdat)
{
unsigned long vm_total_pages;
if (system_state == SYSTEM_BOOTING) {
build_all_zonelists_init();
} else {