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SubjectRe: [PATCH 31/39] KVM: MMU: drop null test before destroy functions
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On 13/09/2015 14:15, Julia Lawall wrote:
> Remove unneeded NULL test.
>
> The semantic patch that makes this change is as follows:
> (http://coccinelle.lip6.fr/)
>
> // <smpl>
> @@ expression x; @@
> -if (x != NULL)
> \(kmem_cache_destroy\|mempool_destroy\|dma_pool_destroy\)(x);
> // </smpl>
>
> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
>
> ---
> arch/x86/kvm/mmu.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
> index 69088a1..fb0c1bd 100644
> --- a/arch/x86/kvm/mmu.c
> +++ b/arch/x86/kvm/mmu.c
> @@ -4883,10 +4883,8 @@ static struct shrinker mmu_shrinker = {
>
> static void mmu_destroy_caches(void)
> {
> - if (pte_list_desc_cache)
> - kmem_cache_destroy(pte_list_desc_cache);
> - if (mmu_page_header_cache)
> - kmem_cache_destroy(mmu_page_header_cache);
> + kmem_cache_destroy(pte_list_desc_cache);
> + kmem_cache_destroy(mmu_page_header_cache);
> }
>
> int kvm_mmu_module_init(void)
>

Acked-by: Paolo Bonzini <pbonzini@redhat.com>


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