From ec80ad4585d7163dcf8cad7c95f6b5d526b107dd Mon Sep 17 00:00:00 2001 From: Huacai Chen Date: Wed, 18 Oct 2023 08:42:52 +0800 Subject: [PATCH] LoongArch: Replace kmap_atomic() with kmap_local_page() in copy_user_highpage() [ Upstream commit 477a0ebec101359f49d92796e3b609857d564b52 ] 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@linutronix.de/ Suggested-by: Deepak R Varma Signed-off-by: Huacai Chen Signed-off-by: Sasha Levin --- 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 c74da7770e39..f42a3be5f28d 100644 --- a/arch/loongarch/mm/init.c +++ b/arch/loongarch/mm/init.c @@ -68,11 +68,11 @@ 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(); }