linux-kernel - Re: [PATCH] mm: shmem: fallback to page size splice if large folio has poisoned subpages

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Message-ID: <01423085-1622-41ed-a882-64291f3e97ab@linux.alibaba.com>
Date: Fri, 25 Oct 2024 11:41:28 +0800
From: Baolin Wang <baolin.wang@...ux.alibaba.com>
To: Matthew Wilcox <willy@...radead.org>
Cc: akpm@...ux-foundation.org, hughd@...gle.com, david@...hat.com,
 wangkefeng.wang@...wei.com, shy828301@...il.com, dhowells@...hat.com,
 linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: shmem: fallback to page size splice if large folio
 has poisoned subpages



On 2024/10/25 11:31, Matthew Wilcox wrote:
> On Fri, Oct 25, 2024 at 11:26:39AM +0800, Baolin Wang wrote:
>> The tmpfs has already supported the PMD-sized large folios, and splice()
>> can not read any subpages if the large folio has a poisoned subpage,
>> which is not good as we discussed in previous mail[1].
> 
> folios do not have subpages.  folios have pages.  do not use the term
> "subpage" anywhere.  ever.

OK. This is my previous habit of naming it. Will change 'subpages' to 
'pages' for folios.