From: Wei Yang <richard.weiyang@gmail.com>
To: peterz@infradead.org, akpm@linux-foundation.org, vbabka@suse.cz,
willy@infradead.org, will@kernel.org, linyunsheng@huawei.com,
richard.weiyang@gmail.com, aarcange@redhat.com,
feng.tang@intel.com, ebiederm@xmission.com
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH] mm: remove offset check on page->compound_head and folio->lru
Date: Thu, 6 Jan 2022 23:52:54 +0000 [thread overview]
Message-ID: <20220106235254.19190-1-richard.weiyang@gmail.com> (raw)
FOLIO_MATCH() is used to make sure struct page and folio has identical
layout for the first several words.
The comparison of offset between page->compound_head and folio->lru is
more like an internal check in struct page.
This patch just removes it.
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
---
include/linux/mm_types.h | 1 -
1 file changed, 1 deletion(-)
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 0a2de709fe40..087d6768bc78 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -289,7 +289,6 @@ static_assert(sizeof(struct page) == sizeof(struct folio));
FOLIO_MATCH(flags, flags);
FOLIO_MATCH(lru, lru);
FOLIO_MATCH(mapping, mapping);
-FOLIO_MATCH(compound_head, lru);
FOLIO_MATCH(index, index);
FOLIO_MATCH(private, private);
FOLIO_MATCH(_mapcount, _mapcount);
--
2.33.1
next reply other threads:[~2022-01-06 23:53 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-06 23:52 Wei Yang [this message]
2022-01-07 3:59 ` [PATCH] mm: remove offset check on page->compound_head and folio->lru Matthew Wilcox
2022-01-07 13:40 ` Wei Yang
2022-01-07 22:11 ` Matthew Wilcox
2022-01-08 0:08 ` Andrew Morton
2022-01-08 0:49 ` Matthew Wilcox
2022-01-08 2:41 ` Andrew Morton
2022-01-08 8:13 ` Wei Yang
2022-01-23 1:38 ` Wei Yang
2022-01-24 10:30 ` Vlastimil Babka
2022-01-24 22:55 ` Wei Yang
2022-01-25 10:11 ` Vlastimil Babka
2022-01-27 1:10 ` Wei Yang
2022-01-27 15:42 ` Vlastimil Babka
2022-01-29 0:47 ` Wei Yang
2022-02-24 1:03 ` Wei Yang
2022-02-17 0:34 ` Wei Yang
2022-01-08 0:27 ` Wei Yang
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