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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2021-06-29 04:41:19 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-29 19:53:53 +0200 |
| commit | 0f2317e34e2c7b97efd4600122115410795ebeea (patch) | |
| tree | a859330e4c960baf2fc0f3d8a2379870f8d59d8b /mm/page_alloc.c | |
| parent | mm/page_owner: constify dump_page_owner (diff) | |
| download | linux-0f2317e34e2c7b97efd4600122115410795ebeea.tar.xz linux-0f2317e34e2c7b97efd4600122115410795ebeea.zip | |
mm: make compound_head const-preserving
If you pass a const pointer to compound_head(), you get a const pointer
back; if you pass a mutable pointer, you get a mutable pointer back. Also
remove an unnecessary forward definition of struct page; we're about to
dereference page->compound_head, so it must already have been defined.
Link: https://lkml.kernel.org/r/20210416231531.2521383-5-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
0 files changed, 0 insertions, 0 deletions