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

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;