Patch "mm: drop unused pmdp_huge_get_and_clear_notify()" has been added to the 4.4-stable tree

Patch "mm: drop unused pmdp_huge_get_and_clear_notify()" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    mm: drop unused pmdp_huge_get_and_clear_notify()

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     mm-drop-unused-pmdp_huge_get_and_clear_notify.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From c0c379e2931b05facef538e53bf3b21f283d9a0b Mon Sep 17 00:00:00 2001
From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Date: Thu, 13 Apr 2017 14:56:23 -0700
Subject: mm: drop unused pmdp_huge_get_and_clear_notify()

From: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>

commit c0c379e2931b05facef538e53bf3b21f283d9a0b upstream.

Dave noticed that after fixing MADV_DONTNEED vs numa balancing race the
last pmdp_huge_get_and_clear_notify() user is gone.

Let's drop the helper.

Link: http://lkml.kernel.org/r/20170306112047.24809-1-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[jwang: adjust context for 4.4]
Signed-off-by: Jack Wang <jinpu.wang@profitbricks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/linux/mmu_notifier.h |   13 -------------
 1 file changed, 13 deletions(-)

--- a/include/linux/mmu_notifier.h
+++ b/include/linux/mmu_notifier.h
@@ -381,18 +381,6 @@ static inline void mmu_notifier_mm_destr
 	___pmd;								\
 })
 
-#define pmdp_huge_get_and_clear_notify(__mm, __haddr, __pmd)		\
-({									\
-	unsigned long ___haddr = __haddr & HPAGE_PMD_MASK;		\
-	pmd_t ___pmd;							\
-									\
-	___pmd = pmdp_huge_get_and_clear(__mm, __haddr, __pmd);		\
-	mmu_notifier_invalidate_range(__mm, ___haddr,			\
-				      ___haddr + HPAGE_PMD_SIZE);	\
-									\
-	___pmd;								\
-})
-
 /*
  * set_pte_at_notify() sets the pte _after_ running the notifier.
  * This is safe to start by updating the secondary MMUs, because the primary MMU
@@ -475,7 +463,6 @@ static inline void mmu_notifier_mm_destr
 #define pmdp_clear_young_notify pmdp_test_and_clear_young
 #define	ptep_clear_flush_notify ptep_clear_flush
 #define pmdp_huge_clear_flush_notify pmdp_huge_clear_flush
-#define pmdp_huge_get_and_clear_notify pmdp_huge_get_and_clear
 #define set_pte_at_notify set_pte_at
 
 #endif /* CONFIG_MMU_NOTIFIER */


Patches currently in stable-queue which might be from kirill.shutemov@linux.intel.com are

queue-4.4/mm-drop-unused-pmdp_huge_get_and_clear_notify.patch
queue-4.4/thp-fix-madv_dontneed-vs.-numa-balancing-race.patch
queue-4.4/thp-reduce-indentation-level-in-change_huge_pmd.patch