mm/vma: introduce VM_ACCESS_FLAGS
authorAnshuman Khandual <anshuman.khandual@arm.com>
Fri, 10 Apr 2020 21:33:09 +0000 (14:33 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 10 Apr 2020 22:36:21 +0000 (15:36 -0700)
commit6cb4d9a2870d2062e34c93bfef4d52fca3fe42d1
tree320b55ec93c786f01132532c8e8c19d192fb1473
parentc62da0c35d58518ddb26ff641d2485596567fd96
mm/vma: introduce VM_ACCESS_FLAGS

There are many places where all basic VMA access flags (read, write,
exec) are initialized or checked against as a group.  One such example
is during page fault.  Existing vma_is_accessible() wrapper already
creates the notion of VMA accessibility as a group access permissions.

Hence lets just create VM_ACCESS_FLAGS (VM_READ|VM_WRITE|VM_EXEC) which
will not only reduce code duplication but also extend the VMA
accessibility concept in general.

Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Nick Hu <nickhu@andestech.com>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Rob Springer <rspringer@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Link: http://lkml.kernel.org/r/1583391014-8170-3-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/arm/mm/fault.c
arch/arm64/mm/fault.c
arch/nds32/mm/fault.c
arch/powerpc/mm/book3s64/pkeys.c
arch/s390/mm/fault.c
arch/unicore32/mm/fault.c
arch/x86/mm/pkeys.c
drivers/staging/gasket/gasket_core.c
include/linux/mm.h
mm/mmap.c
mm/mprotect.c