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authorPeter Collingbourne <pcc@google.com>2022-11-03 18:10:37 -0700
committerMarc Zyngier <maz@kernel.org>2022-11-29 09:26:07 +0000
commitef6458b1b6ca3fdb991ce4182e981a88d4c58c0f (patch)
treed52ed45ee1bde6bbe472830fb429d3917d6bb20e /mm/huge_memory.c
parent2dbf12ae132cc78048615cfa19c9be64baaf0ced (diff)
mm: Add PG_arch_3 page flag
As with PG_arch_2, this flag is only allowed on 64-bit architectures due to the shortage of bits available. It will be used by the arm64 MTE code in subsequent patches. Signed-off-by: Peter Collingbourne <pcc@google.com> Cc: Will Deacon <will@kernel.org> Cc: Marc Zyngier <maz@kernel.org> Cc: Steven Price <steven.price@arm.com> [catalin.marinas@arm.com: added flag preserving in __split_huge_page_tail()] Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Steven Price <steven.price@arm.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20221104011041.290951-5-pcc@google.com
Diffstat (limited to 'mm/huge_memory.c')
-rw-r--r--mm/huge_memory.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 76e7b973919c..dfe72ea23c5f 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -2446,6 +2446,7 @@ static void __split_huge_page_tail(struct page *head, int tail,
(1L << PG_unevictable) |
#ifdef CONFIG_ARCH_USES_PG_ARCH_X
(1L << PG_arch_2) |
+ (1L << PG_arch_3) |
#endif
(1L << PG_dirty) |
LRU_GEN_MASK | LRU_REFS_MASK));