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| author | Kiryl Shutsemau <kas@kernel.org> | 2026-02-27 19:42:40 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-04-05 13:53:07 -0700 |
| commit | f0369fb13619569ba8564ce8d4fc9d385bbee8a2 (patch) | |
| tree | 0d71e1801bf3a52cee4dda72411bded59b084fa1 /include | |
| parent | a2c77ec320a99581e8272868ccfa53a7d7a7b168 (diff) | |
| download | linux-f0369fb13619569ba8564ce8d4fc9d385bbee8a2.tar.gz linux-f0369fb13619569ba8564ce8d4fc9d385bbee8a2.zip | |
mm: change the interface of prep_compound_tail()
Instead of passing down the head page and tail page index, pass the tail
and head pages directly, as well as the order of the compound page.
This is a preparation for changing how the head position is encoded in the
tail page.
Link: https://lkml.kernel.org/r/20260227194302.274384-3-kas@kernel.org
Signed-off-by: Kiryl Shutsemau <kas@kernel.org>
Reviewed-by: Muchun Song <muchun.song@linux.dev>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Acked-by: David Hildenbrand (arm) <david@kernel.org>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Baoquan He <bhe@redhat.com>
Cc: Christoph Lameter <cl@gentwo.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Frank van der Linden <fvdl@google.com>
Cc: Harry Yoo <harry.yoo@oracle.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Usama Arif <usamaarif642@gmail.com>
Cc: WANG Xuerui <kernel@xen0n.name>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/page-flags.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 415e9f2ef616..7729a4a28b44 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -870,9 +870,10 @@ static inline bool folio_test_large(const struct folio *folio) return folio_test_head(folio); } -static __always_inline void set_compound_head(struct page *page, struct page *head) +static __always_inline void set_compound_head(struct page *tail, + const struct page *head, unsigned int order) { - WRITE_ONCE(page->compound_head, (unsigned long)head + 1); + WRITE_ONCE(tail->compound_head, (unsigned long)head + 1); } static __always_inline void clear_compound_head(struct page *page) |