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From: David Hildenbrand <david@redhat.com>
To: Max Kellermann <max.kellermann@ionos.com>
Cc: Kiryl Shutsemau <kirill@shutemov.name>,
	akpm@linux-foundation.org, axelrasmussen@google.com,
	yuanchu@google.com, willy@infradead.org, hughd@google.com,
	mhocko@suse.com, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org, lorenzo.stoakes@oracle.com,
	Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org,
	surenb@google.com, vishal.moola@gmail.com
Subject: Re: [PATCH v2 01/12] mm/shmem: add `const` to lots of pointer parameters
Date: Mon, 1 Sep 2025 12:40:02 +0200	[thread overview]
Message-ID: <2325a092-c810-4ae2-bf71-0a2c6fe361eb@redhat.com> (raw)
In-Reply-To: <CAKPOu+8JwdcK4RJDt7amCj9-V0K8Xjmtt=HHWsrET=EEyPBthw@mail.gmail.com>

On 01.09.25 12:36, Max Kellermann wrote:
> On Mon, Sep 1, 2025 at 12:07 PM David Hildenbrand <david@redhat.com> wrote:
>>
>> On 01.09.25 12:00, Max Kellermann wrote:
>>> On Mon, Sep 1, 2025 at 11:53 AM David Hildenbrand <david@redhat.com> wrote:
>>>> I'm sorry, I have no time to argue about the basics of writing a patch
>>>> description. I even proposed a simple example of what we (multiple
>>>> reviewers) would expect as a bare minimum.
>>>
>>> But Lorenzo Stoakes and Mike Rappoport wanted much more than that.
>>
>> Sure, if it's not a simple "test" function as the one I commented on, it
>> might make sense to explain more why it is okay.
> 
> Lorenzo and Mike commented on the very same patch as you (i.e. 01/12).
> 
> I remember that you provided an example, and implementing that would
> have been easy - but it would not have been enough.

It would have been :)

See, Willy's patch made it clear that these are "test" functions. I 
incorporated that in my suggestion by using the term "test function".

For a "test" function (or a getter), it's trivial to see why we would 
want to have it const.

For other functions it's less clear, and might contradict to some plans 
we have (e.g., currently does not modify it but might in the future).

-- 
Cheers

David / dhildenb


  reply	other threads:[~2025-09-01 10:40 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-08-31  9:39 [PATCH v2 00/12] mm: add `const` to lots of pointer parameters Max Kellermann
2025-08-31  9:39 ` [PATCH v2 01/12] mm/shmem: " Max Kellermann
2025-09-01  7:33   ` Kiryl Shutsemau
2025-09-01  8:05     ` Max Kellermann
2025-09-01  8:20       ` David Hildenbrand
2025-09-01  8:26         ` Max Kellermann
2025-09-01  8:35           ` David Hildenbrand
2025-09-01  9:26             ` Max Kellermann
2025-09-01  9:32               ` Vlastimil Babka
2025-09-01  9:45                 ` Max Kellermann
2025-09-01  9:49                   ` David Hildenbrand
2025-09-01  9:41               ` David Hildenbrand
2025-09-01  9:48                 ` Max Kellermann
2025-09-01  9:52                   ` David Hildenbrand
2025-09-01 10:00                     ` Max Kellermann
2025-09-01 10:07                       ` David Hildenbrand
2025-09-01 10:36                         ` Max Kellermann
2025-09-01 10:40                           ` David Hildenbrand [this message]
2025-09-01  9:01       ` Mike Rapoport
2025-08-31  9:39 ` [PATCH v2 02/12] include/pagemap.h: " Max Kellermann
2025-08-31  9:39 ` [PATCH v2 03/12] include/mmzone.h: " Max Kellermann
2025-08-31  9:39 ` [PATCH v2 04/12] include/fs.h: add `const` to several " Max Kellermann
2025-08-31  9:39 ` [PATCH v2 05/12] mm/oom_kill: add `const` to pointer parameter Max Kellermann
2025-08-31  9:39 ` [PATCH v2 06/12] mm/util: add `const` to several pointer parameters Max Kellermann
2025-08-31  9:39 ` [PATCH v2 07/12] parisc/sys_parisc.c: add `const` to mmap_upper_limit() parameter Max Kellermann
2025-09-01  0:38   ` Matthew Wilcox
2025-09-01  6:06     ` Max Kellermann
2025-08-31  9:39 ` [PATCH v2 08/12] arch, mm/util: add const to arch_pick_mmap_layout() parameter Max Kellermann
2025-08-31 23:43   ` kernel test robot
2025-09-01  4:30     ` Max Kellermann
2025-08-31  9:39 ` [PATCH v2 09/12] include/mm_types.h: add `const` to several pointer parameters Max Kellermann
2025-08-31  9:39 ` [PATCH v2 10/12] include/mm_inline.h: add `const` to lots of " Max Kellermann
2025-08-31  9:39 ` [PATCH v2 11/12] include/mm.h: " Max Kellermann
2025-08-31  9:39 ` [PATCH v2 12/12] mm/highmem: " Max Kellermann

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