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mm: use kcalloc() instead of kzalloc() to allocate array

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The advantage of kcalloc is, that will prevent integer overflows which
could result from the multiplication of number of elements and size and
it is also a bit nicer to read.

The semantic patch that makes this change is available in
https://lkml.org/lkml/2011/11/25/107

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Thomas Meyer 2012-05-29 15:06:21 -07:00 committed by Linus Torvalds
parent f623881872
commit 4d67d86053
1 changed files with 2 additions and 2 deletions
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4
mm/vmalloc.c
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@ -2375,8 +2375,8 @@ struct vm_struct **pcpu_get_vm_areas(const unsigned long *offsets,
return NULL;
}
vms = kzalloc(sizeof(vms[0]) * nr_vms, GFP_KERNEL);
vas = kzalloc(sizeof(vas[0]) * nr_vms, GFP_KERNEL);
vms = kcalloc(nr_vms, sizeof(vms[0]), GFP_KERNEL);
vas = kcalloc(nr_vms, sizeof(vas[0]), GFP_KERNEL);
if (!vas || !vms)
goto err_free2;