diff options
| author |   Miaohe Lin <linmiaohe@huawei.com> | 2021-09-02 15:01:05 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-03 09:58:18 -0700 |
| commit | 64632fd3eb4611780a1190362f2119d8f2bb5465 (patch) | |
| tree | 02154b1176d4da1a7e818ed2dc4247c4d3c32c20 /mm | |
| parent | mm/vmstat: correct some wrong comments (diff) | |
| download | linux-dev-64632fd3eb4611780a1190362f2119d8f2bb5465.tar.xz linux-dev-64632fd3eb4611780a1190362f2119d8f2bb5465.zip | |
mm/vmstat: simplify the array size calculation
We can replace the array_num * sizeof(array[0]) with sizeof(array) to
simplify the code.
Link: https://lkml.kernel.org/r/20210715122911.15700-3-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/vmstat.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c index 5bd621eadc48..c4634dc83916 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1891,17 +1891,15 @@ static bool need_update(int cpu) /* * The fast way of checking if there are any vmstat diffs. */ - if (memchr_inv(pzstats->vm_stat_diff, 0, NR_VM_ZONE_STAT_ITEMS * - sizeof(pzstats->vm_stat_diff[0]))) + if (memchr_inv(pzstats->vm_stat_diff, 0, sizeof(pzstats->vm_stat_diff))) return true; if (last_pgdat == zone->zone_pgdat) continue; last_pgdat = zone->zone_pgdat; n = per_cpu_ptr(zone->zone_pgdat->per_cpu_nodestats, cpu); - if (memchr_inv(n->vm_node_stat_diff, 0, NR_VM_NODE_STAT_ITEMS * - sizeof(n->vm_node_stat_diff[0]))) - return true; + if (memchr_inv(n->vm_node_stat_diff, 0, sizeof(n->vm_node_stat_diff))) + return true; } return false; } |