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Commit 56008c04 authored by John David Anglin's avatar John David Anglin Committed by Helge Deller
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parisc: Extend disabled preemption in copy_user_page 



It's always bothered me that we only disable preemption in
copy_user_page around the call to flush_dcache_page_asm.
This patch extends this to after the copy.

Signed-off-by: default avatarJohn David Anglin <dave.anglin@bell.net>
Cc: stable@vger.kernel.org # 4.9+
Signed-off-by: default avatarHelge Deller <deller@gmx.de>
parent ae7a609c

arch/parisc/kernel/cache.c

+1 −1
Original line number Diff line number Diff line
@@ -453,8 +453,8 @@ void copy_user_page(void *vto, void *vfrom, unsigned long vaddr, 
	  before it can be accessed through the kernel mapping. */

	preempt_disable();

	flush_dcache_page_asm(__pa(vfrom), vaddr);

	preempt_enable();

	copy_page_asm(vto, vfrom);

	preempt_enable();

}

EXPORT_SYMBOL(copy_user_page);