+ mm-mmap-drop-arch_filter_pgprot.patch added to -mm tree

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: mm/mmap: drop arch_filter_pgprot()
has been added to the -mm tree.  Its filename is
     mm-mmap-drop-arch_filter_pgprot.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/mm-mmap-drop-arch_filter_pgprot.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/mm-mmap-drop-arch_filter_pgprot.patch

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------------------------------------------------------
From: Anshuman Khandual <anshuman.khandual@arm.com>
Subject: mm/mmap: drop arch_filter_pgprot()

There are no platforms left which subscribe ARCH_HAS_FILTER_PGPROT.  Hence
just drop arch_filter_pgprot() and also the config ARCH_HAS_FILTER_PGPROT.

Link: https://lkml.kernel.org/r/1645425519-9034-13-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/Kconfig |    3 ---
 mm/mmap.c  |   10 +---------
 2 files changed, 1 insertion(+), 12 deletions(-)

--- a/mm/Kconfig~mm-mmap-drop-arch_filter_pgprot
+++ a/mm/Kconfig
@@ -744,9 +744,6 @@ config IDLE_PAGE_TRACKING
 config ARCH_HAS_CACHE_LINE_SIZE
 	bool
 
-config ARCH_HAS_FILTER_PGPROT
-	bool
-
 config ARCH_HAS_VM_GET_PAGE_PROT
 	bool
 
--- a/mm/mmap.c~mm-mmap-drop-arch_filter_pgprot
+++ a/mm/mmap.c
@@ -102,14 +102,6 @@ static void unmap_region(struct mm_struc
  *								w: (no) no
  *								x: (yes) yes
  */
-
-#ifndef CONFIG_ARCH_HAS_FILTER_PGPROT
-static inline pgprot_t arch_filter_pgprot(pgprot_t prot)
-{
-	return prot;
-}
-#endif
-
 static inline pgprot_t __vm_get_page_prot(unsigned long vm_flags)
 {
 	switch (vm_flags & (VM_READ | VM_WRITE | VM_EXEC | VM_SHARED)) {
@@ -155,7 +147,7 @@ pgprot_t vm_get_page_prot(unsigned long
 	pgprot_t ret = __pgprot(pgprot_val(__vm_get_page_prot(vm_flags)) |
 			pgprot_val(arch_vm_get_page_prot(vm_flags)));
 
-	return arch_filter_pgprot(ret);
+	return ret;
 }
 EXPORT_SYMBOL(vm_get_page_prot);
 #endif	/* CONFIG_ARCH_HAS_VM_GET_PAGE_PROT */
_

Patches currently in -mm which might be from anshuman.khandual@arm.com are

mm-generalize-arch_has_filter_pgprot.patch
mm-merge-pte_mkhuge-call-into-arch_make_huge_pte.patch
mm-debug_vm_pgtable-drop-protection_map-usage.patch
mm-mmap-clarify-protection_map-indices.patch
mm-mmap-add-new-config-arch_has_vm_get_page_prot.patch
powerpc-mm-enable-arch_has_vm_get_page_prot.patch
arm64-mm-enable-arch_has_vm_get_page_prot.patch
sparc-mm-enable-arch_has_vm_get_page_prot.patch
mips-mm-enable-arch_has_vm_get_page_prot.patch
m68k-mm-enable-arch_has_vm_get_page_prot.patch
arm-mm-enable-arch_has_vm_get_page_prot.patch
mm-mmap-drop-protection_map.patch
mm-mmap-drop-arch_filter_pgprot.patch
mm-mmap-drop-arch_vm_get_page_pgprot.patch
s390-mm-enable-arch_has_vm_get_page_prot.patch
riscv-mm-enable-arch_has_vm_get_page_prot.patch
alpha-mm-enable-arch_has_vm_get_page_prot.patch
sh-mm-enable-arch_has_vm_get_page_prot.patch
arc-mm-enable-arch_has_vm_get_page_prot.patch
csky-mm-enable-arch_has_vm_get_page_prot.patch
extensa-mm-enable-arch_has_vm_get_page_prot.patch
parisc-mm-enable-arch_has_vm_get_page_prot.patch
openrisc-mm-enable-arch_has_vm_get_page_prot.patch
um-mm-enable-arch_has_vm_get_page_prot.patch
microblaze-mm-enable-arch_has_vm_get_page_prot.patch
nios2-mm-enable-arch_has_vm_get_page_prot.patch
hexagon-mm-enable-arch_has_vm_get_page_prot.patch
nds32-mm-enable-arch_has_vm_get_page_prot.patch
ia64-mm-enable-arch_has_vm_get_page_prot.patch
mm-mmap-drop-generic-vm_get_page_prot.patch
mm-mmap-drop-arch_has_vm_get_page_prot.patch
mm-hugetlb-generalize-arch_want_general_hugetlb.patch
mm-migration-add-trace-events-for-thp-migrations.patch
mm-migration-add-trace-events-for-base-page-and-hugetlb-migrations.patch