diff options
| author | Kiryl Shutsemau <kas@kernel.org> | 2026-02-27 22:42:56 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-04-05 23:53:10 +0300 |
| commit | 8231e4c040fb0ddd37d66093281d197fd5000297 (patch) | |
| tree | c15f17d31efed16627554605300977d86296fd16 | |
| parent | fed8676ca2b0195647046dfc955f86f53ab837f0 (diff) | |
| download | linux-8231e4c040fb0ddd37d66093281d197fd5000297.tar.xz | |
mm/slab: use compound_head() in page_slab()
page_slab() contained an open-coded implementation of compound_head().
Replace the duplicated code with a direct call to compound_head().
Link: https://lkml.kernel.org/r/20260227194302.274384-19-kas@kernel.org
Signed-off-by: Kiryl Shutsemau <kas@kernel.org>
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: Muchun Song <muchun.song@linux.dev>
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>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | mm/slab.h | 14 |
1 files changed, 1 insertions, 13 deletions
diff --git a/mm/slab.h b/mm/slab.h index ccbdbed18c05..77242024e7d5 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -131,19 +131,7 @@ static_assert(IS_ALIGNED(offsetof(struct slab, freelist), sizeof(struct freelist */ static inline struct slab *page_slab(const struct page *page) { - unsigned long info; - - info = READ_ONCE(page->compound_info); - if (info & 1) { - /* See compound_head() */ - if (compound_info_has_mask()) { - unsigned long p = (unsigned long)page; - page = (struct page *)(p & info); - } else { - page = (struct page *)(info - 1); - } - } - + page = compound_head(page); if (data_race(page->page_type >> 24) != PGTY_slab) page = NULL; |