The motivation here is to consolidate VMA flag combinations commonly used across platforms and reduce code duplication while making it uncluttered in general. This first introduces a default VM_DATA_DEFAULT_FLAGS which platforms can easily fall back on without requiring to define any similar data flag combinations as they currently do. This also adds some more common data flag combinations which are generally used when the platforms decide to override the default. The second patch consolidates VM_READ, VM_WRITE, VM_EXEC as VM_ACCESS_FLAGS extending the existing VMA accessibility concept via vma_is_accessibility(). VM_ACCESS_FLAGS replaces many other instances which used check all three VMA access flags simultaneously. While here, this also adds some more special VMA flag based helpers which wraps around similar checks at various places thus improving readability. This series intentionally limits these new helpers which are applicable only for special purpose VM flags than the more common ones like VM_READ, VM_WRITE, VM_EXEC, VM_SHARED etc just to limit code churn. But if there is common agreement that every flag should have it's own wrapper here, we can do that as well. Otherwise if this patch seems really unnecessary with much code churn, will be happy to drop it. Reviews, comments, suggestions and concerns welcome. Thank you. This series is based on v5.6-r4 after applying these patches. 1. https://patchwork.kernel.org/cover/11399319/ 2. https://patchwork.kernel.org/patch/11399379/ This series is build tested across multiple architectures but boot tested only on arm64 and x86 platforms. Cc: linux-alpha@xxxxxxxxxxxxxxx Cc: linux-kernel@xxxxxxxxxxxxxxx Cc: linux-snps-arc@xxxxxxxxxxxxxxxxxxx Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx Cc: linux-c6x-dev@xxxxxxxxxxxxx Cc: uclinux-h8-devel@xxxxxxxxxxxxxxxxxxxx Cc: linux-hexagon@xxxxxxxxxxxxxxx Cc: linux-ia64@xxxxxxxxxxxxxxx Cc: linux-m68k@xxxxxxxxxxxxxxxxxxxx Cc: linux-mips@xxxxxxxxxxxxxxx Cc: nios2-dev@xxxxxxxxxxxxxxxxxxxxxx Cc: openrisc@xxxxxxxxxxxxxxxxxxxx Cc: linux-parisc@xxxxxxxxxxxxxxx Cc: linuxppc-dev@xxxxxxxxxxxxxxxx Cc: linux-riscv@xxxxxxxxxxxxxxxxxxx Cc: linux-s390@xxxxxxxxxxxxxxx Cc: linux-sh@xxxxxxxxxxxxxxx Cc: sparclinux@xxxxxxxxxxxxxxx Cc: linux-um@xxxxxxxxxxxxxxxxxxx Cc: linux-xtensa@xxxxxxxxxxxxxxxx Cc: linux-mm@xxxxxxxxx Anshuman Khandual (3): mm/vma: Define a default value for VM_DATA_DEFAULT_FLAGS mm/vma: Introduce VM_ACCESS_FLAGS mm/vma: Introduce some more VMA flag wrappers arch/alpha/include/asm/page.h | 3 -- arch/arc/include/asm/page.h | 2 +- arch/arm/include/asm/page.h | 4 +- arch/arm/mm/fault.c | 2 +- arch/arm64/include/asm/page.h | 4 +- arch/arm64/mm/fault.c | 2 +- arch/c6x/include/asm/page.h | 5 +-- arch/c6x/include/asm/processor.h | 2 +- arch/csky/include/asm/page.h | 3 -- arch/h8300/include/asm/page.h | 2 - arch/hexagon/include/asm/page.h | 3 +- arch/ia64/include/asm/page.h | 5 +-- arch/m68k/include/asm/page.h | 3 -- arch/microblaze/include/asm/page.h | 2 - arch/mips/include/asm/page.h | 5 +-- arch/nds32/include/asm/page.h | 3 -- arch/nds32/mm/fault.c | 2 +- arch/nios2/include/asm/page.h | 3 +- arch/nios2/include/asm/processor.h | 2 +- arch/openrisc/include/asm/page.h | 5 --- arch/parisc/include/asm/page.h | 3 -- arch/powerpc/include/asm/page.h | 9 +---- arch/powerpc/include/asm/page_64.h | 7 +--- arch/powerpc/mm/book3s64/pkeys.c | 2 +- arch/riscv/include/asm/page.h | 3 +- arch/s390/include/asm/page.h | 3 +- arch/s390/mm/fault.c | 2 +- arch/sh/include/asm/page.h | 3 -- arch/sh/include/asm/processor_64.h | 2 +- arch/sparc/include/asm/mman.h | 2 +- arch/sparc/include/asm/page_32.h | 3 -- arch/sparc/include/asm/page_64.h | 3 -- arch/unicore32/include/asm/page.h | 3 -- arch/unicore32/mm/fault.c | 2 +- arch/x86/include/asm/page_types.h | 4 +- arch/x86/mm/pkeys.c | 2 +- arch/x86/um/asm/vm-flags.h | 10 +---- arch/xtensa/include/asm/page.h | 3 -- drivers/staging/gasket/gasket_core.c | 2 +- fs/binfmt_elf.c | 2 +- fs/proc/task_mmu.c | 14 +++---- include/linux/huge_mm.h | 4 +- include/linux/mm.h | 58 +++++++++++++++++++++++++++- kernel/events/core.c | 2 +- kernel/events/uprobes.c | 2 +- mm/gup.c | 2 +- mm/huge_memory.c | 6 +-- mm/hugetlb.c | 4 +- mm/ksm.c | 8 ++-- mm/madvise.c | 4 +- mm/memory.c | 4 +- mm/migrate.c | 4 +- mm/mlock.c | 4 +- mm/mmap.c | 20 +++++----- mm/mprotect.c | 9 ++--- mm/mremap.c | 4 +- mm/msync.c | 3 +- mm/rmap.c | 6 +-- mm/shmem.c | 8 ++-- 59 files changed, 140 insertions(+), 158 deletions(-) -- 2.20.1
