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Eric Paris authored
flex_arrays are supposed to be a replacement for: kmalloc(num_elements * sizeof(element)) If kmalloc is given 0 num_elements or a 0 size element it will happily return ZERO_SIZE_PTR. Which looks like a valid allocation, but which will explode if something actually try to use it. The current flex_array code will return an equivalent result if num_elements is 0, but will fail to work if sizeof(element) is 0. This patch allows allocation to work even for 0 size elements. It will cause flex_arrays to explode though if they are used. Imitating the kmalloc behavior. Based-on-patch-by:
Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by:
Eric Paris <eparis@redhat.com> Acked-by:
Dave Hansen <dave@linux.vnet.ibm.com>
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