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authorBaoquan He <bhe@redhat.com>2020-06-04 01:58:55 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-04 06:09:44 +0300
commit26e7deadaae1755faf1f6d1a68988c4b8348df59 (patch)
tree735b0c627ffbff28bb0286198007548ec65de028 /mm/vmstat.c
parentf63661566fad43c0884ad879e6ff07c55ed890f4 (diff)
downloadlinux-26e7deadaae1755faf1f6d1a68988c4b8348df59.tar.xz
mm/vmstat.c: do not show lowmem reserve protection information of empty zone
Because the lowmem reserve protection of a zone can't tell anything if the zone is empty, except of adding one more line in /proc/zoneinfo. Let's remove it from that zone's showing. Signed-off-by: Baoquan He <bhe@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20200402140113.3696-4-bhe@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmstat.c')
-rw-r--r--mm/vmstat.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 5e241434cab2..068706a0a1a7 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1592,6 +1592,12 @@ static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat,
zone->present_pages,
zone_managed_pages(zone));
+ /* If unpopulated, no other information is useful */
+ if (!populated_zone(zone)) {
+ seq_putc(m, '\n');
+ return;
+ }
+
seq_printf(m,
"\n protection: (%ld",
zone->lowmem_reserve[0]);
@@ -1599,12 +1605,6 @@ static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat,
seq_printf(m, ", %ld", zone->lowmem_reserve[i]);
seq_putc(m, ')');
- /* If unpopulated, no other information is useful */
- if (!populated_zone(zone)) {
- seq_putc(m, '\n');
- return;
- }
-
for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++)
seq_printf(m, "\n %-12s %lu", zone_stat_name(i),
zone_page_state(zone, i));