linux-kernel - Re: [PATCH 1/3] mm: vmalloc: introduce array allocation functions

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Message-ID: <Yid1orgE/Yf56WSV@dhcp22.suse.cz>
Date:   Tue, 8 Mar 2022 16:26:26 +0100
From:   Michal Hocko <mhocko@...e.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        Michael Ellerman <mpe@...erman.id.au>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Dennis Zhou <dennis@...nel.org>, Tejun Heo <tj@...nel.org>,
        Christoph Lameter <cl@...ux.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Vladimir Davydov <vdavydov.dev@...il.com>, linux-mm@...ck.org,
        cgroups@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH 1/3] mm: vmalloc: introduce array allocation functions

On Tue 08-03-22 14:55:39, Paolo Bonzini wrote:
> On 3/8/22 14:47, Michal Hocko wrote:
> > Seems useful
> > Acked-by: Michal Hocko<mhocko@...e.com>
> > 
> > Is there any reason you haven't used __alloc_size(1, 2) annotation?
> 
> It's enough to have them in the header:
> 
> > > +extern void *__vmalloc_array(size_t n, size_t size, gfp_t flags) __alloc_size(1, 2);
> > > +extern void *vmalloc_array(size_t n, size_t size) __alloc_size(1, 2);
> > > +extern void *__vcalloc(size_t n, size_t size, gfp_t flags) __alloc_size(1, 2);
> > > +extern void *vcalloc(size_t n, size_t size) __alloc_size(1, 2);

My bad, I have expected __alloc_size before the function name and simply
haven't noticed it at the end.
-- 
Michal Hocko
SUSE Labs