Replace kmap_atomic()/kunmap_atomic() calls with kmap_local_page()/ kunmap_local() in copy_user_highpage() which can be invoked from both preemptible and atomic context [1]. [1] https://lore.kernel.org/all/20201029222652.302358281@xxxxxxxxxxxxx/ Suggested-by: Deepak R Varma <drv@xxxxxxxxx> Signed-off-by: Huacai Chen <chenhuacai@xxxxxxxxxxx> --- arch/loongarch/mm/init.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/loongarch/mm/init.c b/arch/loongarch/mm/init.c index ddf1330c924c..4dd53427f657 100644 --- a/arch/loongarch/mm/init.c +++ b/arch/loongarch/mm/init.c @@ -43,11 +43,11 @@ void copy_user_highpage(struct page *to, struct page *from, { void *vfrom, *vto; - vto = kmap_atomic(to); - vfrom = kmap_atomic(from); + vfrom = kmap_local_page(from); + vto = kmap_local_page(to); copy_page(vto, vfrom); - kunmap_atomic(vfrom); - kunmap_atomic(vto); + kunmap_local(vfrom); + kunmap_local(vto); /* Make sure this page is cleared on other CPU's too before using it */ smp_wmb(); } -- 2.39.3
