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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2015-06-25 01:57:42 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2015-06-25 02:49:44 +0200
commitf28b6ff8c3d48af21354ef30164c8ccea69d5928 (patch)
treebee43a7022f356ec768a01b206dcd079536abad5 /mm/pgtable-generic.c
parentmm/thp: split out pmd collapse flush into separate functions (diff)
downloadlinux-f28b6ff8c3d48af21354ef30164c8ccea69d5928.tar.xz
linux-f28b6ff8c3d48af21354ef30164c8ccea69d5928.zip
powerpc/mm: use generic version of pmdp_clear_flush()
Also move the pmd_trans_huge check to generic code. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
-rw-r--r--mm/pgtable-generic.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c
index c25f94b33811..f21dc5fbc6cd 100644
--- a/mm/pgtable-generic.c
+++ b/mm/pgtable-generic.c
@@ -126,6 +126,7 @@ pmd_t pmdp_clear_flush(struct vm_area_struct *vma, unsigned long address,
{
pmd_t pmd;
VM_BUG_ON(address & ~HPAGE_PMD_MASK);
+ VM_BUG_ON(!pmd_trans_huge(*pmdp));
pmd = pmdp_get_and_clear(vma->vm_mm, address, pmdp);
flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
return pmd;
@@ -198,3 +199,19 @@ void pmdp_invalidate(struct vm_area_struct *vma, unsigned long address,
}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
#endif
+
+#ifndef pmdp_collapse_flush
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+pmd_t pmdp_collapse_flush(struct vm_area_struct *vma, unsigned long address,
+ pmd_t *pmdp)
+{
+ pmd_t pmd;
+
+ VM_BUG_ON(address & ~HPAGE_PMD_MASK);
+ VM_BUG_ON(pmd_trans_huge(*pmdp));
+ pmd = pmdp_get_and_clear(vma->vm_mm, address, pmdp);
+ flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
+ return pmd;
+}
+#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
+#endif