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authorMax Filippov <jcmvbkbc@gmail.com>2016-02-25 23:27:51 +0300
committerChris Zankel <chris@zankel.net>2016-03-11 08:53:31 +0000
commita67cc9aa2dfc6e66addf240bbd79e16e01565e81 (patch)
tree0934b03ec3c974cbf43b75003e3a940f3c9f280f /arch/xtensa
parent362014c8d9d51d504c167c44ac280169457732be (diff)
downloadlinux-a67cc9aa2dfc6e66addf240bbd79e16e01565e81.tar.bz2
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>
Diffstat (limited to 'arch/xtensa')
-rw-r--r--arch/xtensa/mm/cache.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/xtensa/mm/cache.c b/arch/xtensa/mm/cache.c
index d75aa1476da7..1a804a2f9a5b 100644
--- 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 */