[PATCH V4 7/7] mm/mmap: Drop arch_vm_get_page_pgprot()

Anshuman Khandual
2022-04-07T10:35:04Z

There are no platforms left which use arch_vm_get_page_prot(). Just drop
generic arch_vm_get_page_prot().

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
include/linux/mman.h | 4 ----
mm/mmap.c | 3 +--
2 files changed, 1 insertion(+), 6 deletions(-)

diff --git a/include/linux/mman.h b/include/linux/mman.h
index b66e91b8176c..58b3abd457a3 100644
--- a/include/linux/mman.h
+++ b/include/linux/mman.h
@@ -93,10 +93,6 @@ static inline void vm_unacct_memory(long pages)
#define arch_calc_vm_flag_bits(flags) 0
#endif

-#ifndef arch_vm_get_page_prot
-#define arch_vm_get_page_prot(vm_flags) __pgprot(0)
-#endif
-
#ifndef arch_validate_prot
/*
* This is called from mprotect(). PROT_GROWSDOWN and PROT_GROWSUP have
diff --git a/mm/mmap.c b/mm/mmap.c
index edf2a5e38f4d..db7f33154206 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -110,8 +110,7 @@ pgprot_t protection_map[16] __ro_after_init = {
pgprot_t vm_get_page_prot(unsigned long vm_flags)
{
pgprot_t ret = __pgprot(pgprot_val(protection_map[vm_flags &
- (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)]) |
- pgprot_val(arch_vm_get_page_prot(vm_flags)));
+ (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)]));

return ret;
}
--
2.25.1