Merge branch 'for-4.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...

[sfrench/cifs-2.6.git] / arch / powerpc / include / asm / pgtable-types.h

diff --git a/arch/powerpc/include/asm/pgtable-types.h b/arch/powerpc/include/asm/pgtable-types.h
index 8bd3b13fe2fb2e8bd1c5762c4e080c9cd921edaa..369a164b545c09087e0740fd6c32ea282a7b5245 100644 (file)
--- a/arch/powerpc/include/asm/pgtable-types.h
+++ b/arch/powerpc/include/asm/pgtable-types.h
@@ -62,6 +62,7 @@ static inline bool pte_xchg(pte_t *ptep, pte_t old, pte_t new)
 {
        unsigned long *p = (unsigned long *)ptep;
 
+       /* See comment in switch_mm_irqs_off() */
        return pte_val(old) == __cmpxchg_u64(p, pte_val(old), pte_val(new));
 }
 #endif