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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 /fs/proc/page.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 'fs/proc/page.c')
-rw-r--r--fs/proc/page.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/proc/page.c b/fs/proc/page.c
index 882525c8e94c..6249c347809a 100644
--- a/fs/proc/page.c
+++ b/fs/proc/page.c
@@ -221,6 +221,7 @@ u64 stable_page_flags(struct page *page)
u |= kpf_copy_bit(k, KPF_ARCH, PG_arch_1);
#ifdef CONFIG_ARCH_USES_PG_ARCH_X
u |= kpf_copy_bit(k, KPF_ARCH_2, PG_arch_2);
+ u |= kpf_copy_bit(k, KPF_ARCH_3, PG_arch_3);
#endif
return u;