diff options
| author | Wei Yang <richard.weiyang@gmail.com> | 2022-01-29 13:41:04 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-01-30 09:56:58 +0200 |
| commit | 536f4217ced62b671bd759f6b549621a5654a70f (patch) | |
| tree | a2c5daf27c3fe8c0d674518556c99bc7465fc07e | |
| parent | 61e28cf0543c7d8e6ef88c3c305f727c5a21ba5b (diff) | |
| download | lwn-536f4217ced62b671bd759f6b549621a5654a70f.tar.gz lwn-536f4217ced62b671bd759f6b549621a5654a70f.zip | |
mm: page->mapping folio->mapping should have the same offset
As with the other members of folio, the offset of page->mapping and
folio->mapping must be the same. The compile-time check was
inadvertently removed during development. Add it back.
[willy@infradead.org: changelog redo]
Link: https://lkml.kernel.org/r/20220104011734.21714-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/mm_types.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 9db36dc5d4cf..5140e5feb486 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -261,6 +261,7 @@ static_assert(sizeof(struct page) == sizeof(struct folio)); static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl)) 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); |