From: Christoph Hellwig <hch@xxxxxx> Subject: mm: use kmap_local_page in memzero_page The commit message introducing the global memzero_page explicitly mentions switching to kmap_local_page in the commit log but doesn't actually do that. Link: https://lkml.kernel.org/r/20210713055231.137602-3-hch@xxxxxx Fixes: 28961998f858 ("iov_iter: lift memzero_page() to highmem.h") Signed-off-by: Christoph Hellwig <hch@xxxxxx> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@xxxxxxx> Reviewed-by: Ira Weiny <ira.weiny@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/highmem.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/include/linux/highmem.h~mm-use-kmap_local_page-in-memzero_page +++ a/include/linux/highmem.h @@ -324,10 +324,10 @@ static inline void memcpy_to_page(struct static inline void memzero_page(struct page *page, size_t offset, size_t len) { - char *addr = kmap_atomic(page); + char *addr = kmap_local_page(page); memset(addr + offset, 0, len); flush_dcache_page(page); - kunmap_atomic(addr); + kunmap_local(addr); } #endif /* _LINUX_HIGHMEM_H */ _
