Use kmap_local_page() instead of kmap_atomic() which has been deprecated.

Link: https://lkml.kernel.org/r/20240306034804.62087-1-flyingpeng@tencent.comSigned-off-by: Peng Hao <flyingpeng@tencent.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>