diff options
| author | Huacai Chen <chenhuacai@loongson.cn> | 2023-10-18 08:42:52 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2023-10-18 08:42:52 +0800 |
| commit | 477a0ebec101359f49d92796e3b609857d564b52 (patch) | |
| tree | aa4d25131608db23cdad1e20058b51f8d0a4d929 /arch | |
| parent | 449c2756c2323c9e32b2a2fa9c8b59ce91b5819d (diff) | |
LoongArch: Replace kmap_atomic() with kmap_local_page() in copy_user_highpage()
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 <drv@mailo.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/loongarch/mm/init.c | 8 |
1 files 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(); } |