linux-kernel - Re: [PATCH v2 05/14] mm/ksm: use folio in stable_node

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Date: Fri, 22 Mar 2024 18:11:22 +0100
From: David Hildenbrand <david@...hat.com>
To: Matthew Wilcox <willy@...radead.org>, alexs@...nel.org
Cc: Andrea Arcangeli <aarcange@...hat.com>,
 Izik Eidus <izik.eidus@...ellosystems.com>,
 Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
 linux-kernel@...r.kernel.org, Hugh Dickins <hughd@...gle.com>,
 Chris Wright <chrisw@...s-sol.org>
Subject: Re: [PATCH v2 05/14] mm/ksm: use folio in stable_node_dup

On 22.03.24 16:57, Matthew Wilcox wrote:
> On Fri, Mar 22, 2024 at 04:36:52PM +0800, alexs@...nel.org wrote:
>> -static struct page *stable_node_dup(struct ksm_stable_node **_stable_node_dup,
>> -				    struct ksm_stable_node **_stable_node,
>> -				    struct rb_root *root,
>> -				    bool prune_stale_stable_nodes)
>> +static void *stable_node_dup(struct ksm_stable_node **_stable_node_dup,
>> +			     struct ksm_stable_node **_stable_node,
>> +			     struct rb_root *root,
>> +			     bool prune_stale_stable_nodes)
> 
> Do we really have to go through this void * stage?
> 
> Also, please stop reindenting the arguments.  I tend to just switch to
> two tabs, but lining them up with the opening bracket leads to extra
> churn.  Either leave them alone for the entire series or switch _once_.

I wish the coding style would at least recommend something -- I know, 
different subsystems/files have their own rules. Nowadays, I prefer 2 
tabs as well.

-- 
Cheers,

David / dhildenb