[PATCH] mm: remove offset check on page->compound_head and folio->lru

Wei Yang
2022-01-06T23:53:26Z

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