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Groups > linux.kernel > #1740515
| From | Christopher Lameter <cl@linux.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 1/6] mm: add kmalloc_array_node and kcalloc_node |
| Date | 2017-09-27 11:00 +0200 |
| Message-ID | <uugmd-8tI-1@gated-at.bofh.it> (permalink) |
| References | <uufTc-8kl-13@gated-at.bofh.it> <uufTc-8kl-21@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Wed, 27 Sep 2017, Johannes Thumshirn wrote:
> +static inline void *kmalloc_array_node(size_t n, size_t size, gfp_t flags,
> + int node)
> +{
> + if (size != 0 && n > SIZE_MAX / size)
> + return NULL;
> + if (__builtin_constant_p(n) && __builtin_constant_p(size))
> + return kmalloc_node(n * size, flags, node);
Isnt the same check done by kmalloc_node already? The result of
multiplying two constants is a constant after all.
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[PATCH 0/6] Add kmalloc_array_node() and kcalloc_node() Johannes Thumshirn <jthumshirn@suse.de> - 2017-09-27 10:30 +0200
[PATCH 4/6] IB/rdmavt: use kmalloc_array_node Johannes Thumshirn <jthumshirn@suse.de> - 2017-09-27 10:30 +0200
Re: [PATCH 4/6] IB/rdmavt: use kmalloc_array_node Christopher Lameter <cl@linux.com> - 2017-09-27 11:10 +0200
[PATCH 1/6] mm: add kmalloc_array_node and kcalloc_node Johannes Thumshirn <jthumshirn@suse.de> - 2017-09-27 10:30 +0200
Re: [PATCH 1/6] mm: add kmalloc_array_node and kcalloc_node Michal Hocko <mhocko@kernel.org> - 2017-09-27 10:50 +0200
Re: [PATCH 1/6] mm: add kmalloc_array_node and kcalloc_node Christopher Lameter <cl@linux.com> - 2017-09-27 11:10 +0200
Re: [PATCH 1/6] mm: add kmalloc_array_node and kcalloc_node Michal Hocko <mhocko@kernel.org> - 2017-09-27 11:20 +0200
Re: [PATCH 1/6] mm: add kmalloc_array_node and kcalloc_node Christopher Lameter <cl@linux.com> - 2017-09-27 11:00 +0200
Re: [PATCH 1/6] mm: add kmalloc_array_node and kcalloc_node Vlastimil Babka <vbabka@suse.cz> - 2017-09-29 14:10 +0200
[PATCH 2/6] block: use kmalloc_array_node Johannes Thumshirn <jthumshirn@suse.de> - 2017-09-27 10:30 +0200
Re: [PATCH 2/6] block: use kmalloc_array_node Christopher Lameter <cl@linux.com> - 2017-09-27 11:00 +0200
[PATCH 3/6] IB/qib: use kmalloc_array_node Johannes Thumshirn <jthumshirn@suse.de> - 2017-09-27 10:30 +0200
Re: [PATCH 3/6] IB/qib: use kmalloc_array_node Christopher Lameter <cl@linux.com> - 2017-09-27 11:00 +0200
[PATCH 5/6] mm, mempool: use kmalloc_array_node Johannes Thumshirn <jthumshirn@suse.de> - 2017-09-27 10:30 +0200
Re: [PATCH 5/6] mm, mempool: use kmalloc_array_node Christopher Lameter <cl@linux.com> - 2017-09-27 11:10 +0200
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