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Since callers only care about whether the young flag was set, returning bool makes the intention clearer. No functional changes intended. Ran mm selftests on Arm64 and x86 machines, and no issues were found. Note that I only CC'd the arch mailing lists to avoid disturbing too many people. [1] https://lore.kernel.org/all/d172d6bf-c60c-4cf5-9da9-f30de38cdfed@kernel.org/ Baolin Wang (6): mm: change to return bool for ptep_test_and_clear_young() mm: change to return bool for ptep_clear_flush_young()/clear_flush_young_ptes() mm: change to return bool for pmdp_test_and_clear_young() mm: change to return bool for pmdp_clear_flush_young() mm: change to return bool for pudp_test_and_clear_young() mm: change to return bool for the MMU notifier's young flag check arch/arm64/include/asm/pgtable.h | 29 ++++---- arch/arm64/mm/contpte.c | 8 +-- arch/microblaze/include/asm/pgtable.h | 2 +- arch/parisc/include/asm/pgtable.h | 8 +-- arch/parisc/kernel/cache.c | 8 +-- arch/powerpc/include/asm/book3s/32/pgtable.h | 4 +- arch/powerpc/include/asm/book3s/64/pgtable.h | 26 +++---- arch/powerpc/include/asm/nohash/64/pgtable.h | 2 +- arch/powerpc/include/asm/nohash/pgtable.h | 4 +- arch/powerpc/mm/book3s64/pgtable.c | 8 +-- arch/riscv/include/asm/pgtable.h | 14 ++-- arch/riscv/mm/pgtable.c | 8 +-- arch/s390/include/asm/pgtable.h | 16 ++--- arch/x86/include/asm/pgtable.h | 20 +++--- arch/x86/mm/pgtable.c | 28 ++++---- arch/xtensa/include/asm/pgtable.h | 6 +- include/linux/mmu_notifier.h | 76 +++++++++----------- include/linux/pgtable.h | 53 +++++++------- mm/internal.h | 16 ++--- mm/mmu_notifier.c | 20 +++--- mm/pgtable-generic.c | 14 ++-- virt/kvm/kvm_main.c | 40 +++++------ 22 files changed, 201 insertions(+), 209 deletions(-) -- 2.47.3