summaryrefslogtreecommitdiff
path: root/mm
diff options
context:
space:
mode:
authorPaolo Bonzini <pbonzini@redhat.com>2022-03-08 05:02:21 -0500
committerPaolo Bonzini <pbonzini@redhat.com>2022-03-08 09:30:46 -0500
commit3000f2e2fc855664c28d3e6a47e0373737974eb4 (patch)
tree523804b14bc1657ea7755c27d087707a5fc3a360 /mm
parenta8749a35c39903120ec421ef2525acc8e0daa55c (diff)
mm: use vmalloc_array and vcalloc for array allocations
Instead of using array_size or just a multiply, use a function that takes care of both the multiplication and the overflow checks. Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'mm')
-rw-r--r--mm/percpu-stats.c2
-rw-r--r--mm/swap_cgroup.c4
2 files changed, 2 insertions, 4 deletions
diff --git a/mm/percpu-stats.c b/mm/percpu-stats.c
index c6bd092ff7a3..dd3590dfc23d 100644
--- a/mm/percpu-stats.c
+++ b/mm/percpu-stats.c
@@ -144,7 +144,7 @@ alloc_buffer:
spin_unlock_irq(&pcpu_lock);
/* there can be at most this many free and allocated fragments */
- buffer = vmalloc(array_size(sizeof(int), (2 * max_nr_alloc + 1)));
+ buffer = vmalloc_array(2 * max_nr_alloc + 1, sizeof(int));
if (!buffer)
return -ENOMEM;
diff --git a/mm/swap_cgroup.c b/mm/swap_cgroup.c
index 7f34343c075a..5a9442979a18 100644
--- a/mm/swap_cgroup.c
+++ b/mm/swap_cgroup.c
@@ -167,14 +167,12 @@ unsigned short lookup_swap_cgroup_id(swp_entry_t ent)
int swap_cgroup_swapon(int type, unsigned long max_pages)
{
void *array;
- unsigned long array_size;
unsigned long length;
struct swap_cgroup_ctrl *ctrl;
length = DIV_ROUND_UP(max_pages, SC_PER_PAGE);
- array_size = length * sizeof(void *);
- array = vzalloc(array_size);
+ array = vcalloc(length, sizeof(void *));
if (!array)
goto nomem;