Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
authorLinus Torvalds <torvalds@linux-foundation.org>
Wed, 30 Jan 2013 00:58:26 +0000 (11:58 +1100)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 30 Jan 2013 00:58:26 +0000 (11:58 +1100)
Pull one s390 fix from Martin Schwidefsky:
 "Another transparent huge page fix, we need to define a s390 variant
  for pmdp_set_wrprotect to flush the TLB for the huge page correctly."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/thp: implement pmdp_set_wrprotect()

arch/s390/include/asm/pgtable.h

index c1d7930a82f4527657fa6eda9501dae446c164a9..098adbb62660be234d4d2ed5171d5c0615027f31 100644 (file)
@@ -1365,6 +1365,18 @@ static inline void pmdp_invalidate(struct vm_area_struct *vma,
        __pmd_idte(address, pmdp);
 }
 
+#define __HAVE_ARCH_PMDP_SET_WRPROTECT
+static inline void pmdp_set_wrprotect(struct mm_struct *mm,
+                                     unsigned long address, pmd_t *pmdp)
+{
+       pmd_t pmd = *pmdp;
+
+       if (pmd_write(pmd)) {
+               __pmd_idte(address, pmdp);
+               set_pmd_at(mm, address, pmdp, pmd_wrprotect(pmd));
+       }
+}
+
 static inline pmd_t mk_pmd_phys(unsigned long physpage, pgprot_t pgprot)
 {
        pmd_t __pmd;