+ mm-mremap-dont-enable-optimized-pud-move-if-page-table-levels-is-2.patch added to -mm tree

+ mm-mremap-dont-enable-optimized-pud-move-if-page-table-levels-is-2.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm/mremap: don't enable optimized PUD move if page table levels is 2
has been added to the -mm tree.  Its filename is
     mm-mremap-dont-enable-optimized-pud-move-if-page-table-levels-is-2.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/mm-mremap-dont-enable-optimized-pud-move-if-page-table-levels-is-2.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/mm-mremap-dont-enable-optimized-pud-move-if-page-table-levels-is-2.patch

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------------------------------------------------------
From: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Subject: mm/mremap: don't enable optimized PUD move if page table levels is 2

With two level page table don't enable move_normal_pud.

Link: https://lkml.kernel.org/r/20210616045239.370802-5-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Hugh Dickins <hughd@google.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Kalesh Singh <kaleshsingh@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/mremap.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/mremap.c~mm-mremap-dont-enable-optimized-pud-move-if-page-table-levels-is-2
+++ a/mm/mremap.c
@@ -276,7 +276,7 @@ static inline bool move_normal_pmd(struc
 }
 #endif
 
-#ifdef CONFIG_HAVE_MOVE_PUD
+#if CONFIG_PGTABLE_LEVELS > 2 && defined(CONFIG_HAVE_MOVE_PUD)
 static bool move_normal_pud(struct vm_area_struct *vma, unsigned long old_addr,
 		  unsigned long new_addr, pud_t *old_pud, pud_t *new_pud)
 {
_

Patches currently in -mm which might be from aneesh.kumar@linux.ibm.com are

mm-rename-pud_page_vaddr-to-pud_pgtable-and-make-it-return-pmd_t.patch
mm-rename-pud_page_vaddr-to-pud_pgtable-and-make-it-return-pmd_t-fix-2.patch
mm-rename-p4d_page_vaddr-to-p4d_pgtable-and-make-it-return-pud_t.patch
mm-rename-p4d_page_vaddr-to-p4d_pgtable-and-make-it-return-pud_t-fix.patch
selftest-mremap_test-update-the-test-to-handle-pagesize-other-than-4k.patch
selftest-mremap_test-avoid-crash-with-static-build.patch
mm-mremap-convert-huge-pud-move-to-separate-helper.patch
mm-mremap-dont-enable-optimized-pud-move-if-page-table-levels-is-2.patch
mm-mremap-use-pmd-pud_poplulate-to-update-page-table-entries.patch
mm-mremap-hold-the-rmap-lock-in-write-mode-when-moving-page-table-entries.patch
mm-mremap-allow-arch-runtime-override.patch
powerpc-book3s64-mm-update-flush_tlb_range-to-flush-page-walk-cache.patch
powerpc-mm-enable-have_move_pmd-support.patch