[PATCH 2/2] Revert "mm: disable fault around on emulated access bit architecture"

From	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Newsgroups	linux.kernel
Subject	[PATCH 2/2] Revert "mm: disable fault around on emulated access bit architecture"
Date	2016-06-14 10:50 +0200
Message-ID	<rJScO-2p8-15@gated-at.bofh.it> (permalink)
References	<rJScO-2p8-17@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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This reverts commit d0834a6c2c5b0c76cfb806bd7dba6556d8b4edbb.

After revert of 5c0a85fad949 ("mm: make faultaround produce old ptes")
faultaround doesn't have dependencies on hardware accessed bit, so let's
revert this one too.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
---
 mm/memory.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/mm/memory.c b/mm/memory.c
index 61fe7e7b56bf..cd1f29e4897e 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2898,16 +2898,8 @@ void do_set_pte(struct vm_area_struct *vma, unsigned long address,
 	update_mmu_cache(vma, address, pte);
 }
 
-/*
- * If architecture emulates "accessed" or "young" bit without HW support,
- * there is no much gain with fault_around.
- */
 static unsigned long fault_around_bytes __read_mostly =
-#ifndef __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
-	PAGE_SIZE;
-#else
 	rounddown_pow_of_two(65536);
-#endif
 
 #ifdef CONFIG_DEBUG_FS
 static int fault_around_bytes_get(void *data, u64 *val)
-- 
2.8.1

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[PATCH 2/2] Revert "mm: disable fault around on emulated access bit architecture" "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> - 2016-06-14 10:50 +0200

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