Re: [PATCH 12/21] compat: avoid usage of kvzalloc() in rhashtable.c

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On 09/06/2017 05:05 PM, Johannes Berg wrote:
> On Tue, 2017-08-22 at 00:28 +0200, Hauke Mehrtens wrote:
>> This reverts commit 12e8fd6fd3802 ("lib/rhashtable.c: use kvzalloc()
>> in
>> bucket_table_alloc() when possible") from upstream kernel.
>> Kernel versions older that 4.12 do not have kvzalloc() try to avoid
>> the
>> usage of this.
> Can't we backport these? There was a patch from AceLan Kao to do so in
> a pretty simple fashion, but that should still be better than a patch?
> johannes


I think AceLan Kao's patch misses the implementation of kvmalloc_node().
We can implement this for node == NUMA_NO_NODE by using __vmalloc()
instead of __vmalloc_node_flags_caller() which should be fine.

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