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authorZhangPeng <zhangpeng362@huawei.com>2023-07-27 09:16:11 +0800
committerAndrew Morton <akpm@linux-foundation.org>2023-08-21 13:37:29 -0700
commit4852a80524937db8215406cf2b2431b14f320000 (patch)
treefc61da37803c012effb8cfe063c1d88d1de61e05 /mm/kmsan
parent5d7800d9cb9ad1cc98c414036f03cc029508d1c5 (diff)
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>
Diffstat (limited to 'mm/kmsan')
-rw-r--r--mm/kmsan/hooks.c2
-rw-r--r--mm/kmsan/shadow.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/mm/kmsan/hooks.c b/mm/kmsan/hooks.c
index 4e3c3e60ba97..5d6e2dee5692 100644
--- a/mm/kmsan/hooks.c
+++ b/mm/kmsan/hooks.c
@@ -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;
diff --git a/mm/kmsan/shadow.c b/mm/kmsan/shadow.c
index c7de991f6d7f..966994268a01 100644
--- a/mm/kmsan/shadow.c
+++ b/mm/kmsan/shadow.c
@@ -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;
}