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Message-ID: <235b35c2-159c-48b1-a522-654f5ccc2faf@gmail.com>
Date: Thu, 11 Apr 2024 14:08:03 +0800
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Subject: Re: [PATCH v4 1/9] mm/ksm: add ksm_get_folio
To: David Hildenbrand <david@redhat.com>, alexs@kernel.org,
 Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org,
 linux-kernel@vger.kernel.org
Cc: Izik Eidus <izik.eidus@ravellosystems.com>,
 Matthew Wilcox <willy@infradead.org>, Andrea Arcangeli
 <aarcange@redhat.com>, Hugh Dickins <hughd@google.com>,
 Chris Wright <chrisw@sous-sol.org>
References: <20240409092826.1733637-1-alexs@kernel.org>
 <20240409092826.1733637-2-alexs@kernel.org>
 <81c1de48-1e31-449d-8f5a-9342634cea27@redhat.com>
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From: Alex Shi <seakeel@gmail.com>
In-Reply-To: <81c1de48-1e31-449d-8f5a-9342634cea27@redhat.com>
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On 4/10/24 4:34 PM, David Hildenbrand wrote:
> On 09.04.24 11:28, alexs@kernel.org wrote:
>> From: "Alex Shi (tencent)" <alexs@kernel.org>
>>
>> The ksm only contains single pages, so we could add a new func
>> ksm_get_folio for get_ksm_page to use folio instead of pages to save a
>> couple of compound_head calls.
>>
>> After all caller replaced, get_ksm_page will be removed.
>>
>> Signed-off-by: Alex Shi (tencent) <alexs@kernel.org>
>> To: Andrew Morton <akpm@linux-foundation.org>
>> Cc: Izik Eidus <izik.eidus@ravellosystems.com>
>> Cc: Matthew Wilcox <willy@infradead.org>
>> Cc: Andrea Arcangeli <aarcange@redhat.com>
>> Cc: Hugh Dickins <hughd@google.com>
>> Cc: Chris Wright <chrisw@sous-sol.org>
>> Reviewed-by: David Hildenbrand <david@redhat.com>
>> ---
>>   mm/ksm.c | 40 ++++++++++++++++++++++++----------------
>>   1 file changed, 24 insertions(+), 16 deletions(-)
>>
>> diff --git a/mm/ksm.c b/mm/ksm.c
>> index 8c001819cf10..ac080235b002 100644
>> --- a/mm/ksm.c
>> +++ b/mm/ksm.c
>> @@ -915,10 +915,10 @@ enum get_ksm_page_flags {
>>    * a page to put something that might look like our key in page->mapping.
>>    * is on its way to being freed; but it is an anomaly to bear in mind.
>>    */
>> -static struct page *get_ksm_page(struct ksm_stable_node *stable_node,
>> +static struct folio *ksm_get_folio(struct ksm_stable_node *stable_node,
> 
> Just realized that you should adjust the function name in the comment above this function in this patch.
> 

Right, will resend with your suggestion.