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| author | Kiryl Shutsemau <kas@kernel.org> | 2026-02-27 19:42:53 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-04-05 13:53:09 -0700 |
| commit | da3e2d1ca43de56a83a806237b6be7e91cf07052 (patch) | |
| tree | fb51f71ecf8527f950da51b242c7fcb591c33c3e /include | |
| parent | 01b1d0ffb6f7f37f466033cf167959946309ed3d (diff) | |
| download | linux-da3e2d1ca43de56a83a806237b6be7e91cf07052.tar.gz linux-da3e2d1ca43de56a83a806237b6be7e91cf07052.zip | |
mm/hugetlb: remove hugetlb_optimize_vmemmap_key static key
The hugetlb_optimize_vmemmap_key static key was used to guard fake head
detection in compound_head() and related functions. It allowed skipping
the fake head checks entirely when HVO was not in use.
With fake heads eliminated and the detection code removed, the static key
serves no purpose. Remove its definition and all increment/decrement
calls.
Link: https://lkml.kernel.org/r/20260227194302.274384-16-kas@kernel.org
Signed-off-by: Kiryl Shutsemau <kas@kernel.org>
Reviewed-by: Muchun Song <muchun.song@linux.dev>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
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: Vlastimil Babka <vbabka@suse.cz>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/page-flags.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index b8eef2181598..f361bd6c814c 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -221,8 +221,6 @@ static __always_inline bool compound_info_has_mask(void) return is_power_of_2(sizeof(struct page)); } -DECLARE_STATIC_KEY_FALSE(hugetlb_optimize_vmemmap_key); - static __always_inline unsigned long _compound_head(const struct page *page) { unsigned long info = READ_ONCE(page->compound_info); |