xtensa: fix preemption in {clear,copy}_user_highpage

Disabling pagefault makes little sense there, preemption disabling is
what was meant.

Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

diff --git a/arch/xtensa/mm/cache.c b/arch/xtensa/mm/cache.c
index d75aa1476da7595d224c02576a8ee5fcb3fe716e..1a804a2f9a5be6212c57febc01f6d28f47b8c91a 100644 (file)
--- a/arch/xtensa/mm/cache.c
+++ b/arch/xtensa/mm/cache.c
@@ -97,11 +97,11 @@ void clear_user_highpage(struct page *page, unsigned long vaddr)
        unsigned long paddr;
        void *kvaddr = coherent_kvaddr(page, TLBTEMP_BASE_1, vaddr, &paddr);
 
-       pagefault_disable();
+       preempt_disable();
        kmap_invalidate_coherent(page, vaddr);
        set_bit(PG_arch_1, &page->flags);
        clear_page_alias(kvaddr, paddr);
-       pagefault_enable();
+       preempt_enable();
 }
 
 void copy_user_highpage(struct page *dst, struct page *src,
@@ -113,11 +113,11 @@ void copy_user_highpage(struct page *dst, struct page *src,
        void *src_vaddr = coherent_kvaddr(src, TLBTEMP_BASE_2, vaddr,
                                          &src_paddr);
 
-       pagefault_disable();
+       preempt_disable();
        kmap_invalidate_coherent(dst, vaddr);
        set_bit(PG_arch_1, &dst->flags);
        copy_page_alias(dst_vaddr, src_vaddr, dst_paddr, src_paddr);
-       pagefault_enable();
+       preempt_enable();
 }
 
 #endif /* DCACHE_WAY_SIZE > PAGE_SIZE */