diff options
Diffstat (limited to 'arch/frv/mm/highmem.c')
-rw-r--r-- | arch/frv/mm/highmem.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/frv/mm/highmem.c b/arch/frv/mm/highmem.c new file mode 100644 index 000000000000..7dc8fbf3af97 --- /dev/null +++ b/arch/frv/mm/highmem.c @@ -0,0 +1,33 @@ +/* highmem.c: arch-specific highmem stuff + * + * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include <linux/highmem.h> + +void *kmap(struct page *page) +{ + might_sleep(); + if (!PageHighMem(page)) + return page_address(page); + return kmap_high(page); +} + +void kunmap(struct page *page) +{ + if (in_interrupt()) + BUG(); + if (!PageHighMem(page)) + return; + kunmap_high(page); +} + +struct page *kmap_atomic_to_page(void *ptr) +{ + return virt_to_page(ptr); +} |