linux-kernel - Re: [PATCH 1/4] mm/hmm: make full use of walk_page

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <973b7159-513f-0776-668d-8ba1adf87f1c@nvidia.com>
Date:   Thu, 12 Sep 2019 10:16:51 -0700
From:   Ralph Campbell <rcampbell@...dia.com>
To:     Christoph Hellwig <hch@....de>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <amd-gfx@...ts.freedesktop.org>, <dri-devel@...ts.freedesktop.org>,
        <nouveau@...ts.freedesktop.org>,
        Jérôme Glisse <jglisse@...hat.com>,
        Jason Gunthorpe <jgg@...lanox.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 1/4] mm/hmm: make full use of walk_page_range()


On 9/12/19 1:26 AM, Christoph Hellwig wrote:
>> +static int hmm_pfns_fill(unsigned long addr,
>> +			 unsigned long end,
>> +			 struct hmm_range *range,
>> +			 enum hmm_pfn_value_e value)
> 
> Nit: can we use the space a little more efficient, e.g.:
> 
> static int hmm_pfns_fill(unsigned long addr, unsigned long end,
> 		struct hmm_range *range, enum hmm_pfn_value_e value)
> 
>> +static int hmm_vma_walk_test(unsigned long start,
>> +			     unsigned long end,
>> +			     struct mm_walk *walk)
> 
> Same here.
> 
>> +	if (!(vma->vm_flags & VM_READ)) {
>> +		(void) hmm_pfns_fill(start, end, range, HMM_PFN_NONE);
> 
> There should be no need for the void cast here.
> 

OK. I'll post a v2 with the these changes.
Thanks for the reviews.