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mm: kmsan: use helper macro offset_in_page() 

Use helper macro offset_in_page() to improve code readability.  No
functional modification involved.

Link: https://lkml.kernel.org/r/20230727011612.2721843-3-zhangpeng362@huawei.com
Signed-off-by: ZhangPeng <zhangpeng362@huawei.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Marco Elver <elver@google.com>
Cc: Nanyong Sun <sunnanyong@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
ZhangPeng 2023-07-27 09:16:11 +08:00 committed by Andrew Morton
parent 5d7800d9cb
commit 4852a80524
2 changed files with 2 additions and 2 deletions
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2
mm/kmsan/hooks.c
View File

@ -339,7 +339,7 @@ void kmsan_handle_dma(struct page *page, size_t offset, size_t size,
* internal KMSAN checks.
*/
while (size > 0) {
page_offset = addr % PAGE_SIZE;
page_offset = offset_in_page(addr);
to_go = min(PAGE_SIZE - page_offset, (u64)size);
kmsan_handle_dma_page((void *)addr, to_go, dir);
addr += to_go;

2
mm/kmsan/shadow.c
View File

@ -145,7 +145,7 @@ void *kmsan_get_metadata(void *address, bool is_origin)
return NULL;
if (!page_has_metadata(page))
return NULL;
off = addr % PAGE_SIZE;
off = offset_in_page(addr);
return (is_origin ? origin_ptr_for(page) : shadow_ptr_for(page)) + off;
}