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| author | ZhangPeng <zhangpeng362@huawei.com> | 2023-07-27 09:16:11 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-08-21 13:37:29 -0700 |
| commit | 4852a80524937db8215406cf2b2431b14f320000 (patch) | |
| tree | fc61da37803c012effb8cfe063c1d88d1de61e05 /mm/kmsan | |
| parent | 5d7800d9cb9ad1cc98c414036f03cc029508d1c5 (diff) | |
| download | lwn-4852a80524937db8215406cf2b2431b14f320000.tar.gz lwn-4852a80524937db8215406cf2b2431b14f320000.zip | |
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.c | 2 | ||||
| -rw-r--r-- | mm/kmsan/shadow.c | 2 |
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; } |