1639 		void *mapped_buffer = kmap_atomic(spage->page);  in scrub_write_page_to_dev_replace()  local
1641 		memset(mapped_buffer, 0, PAGE_CACHE_SIZE);  in scrub_write_page_to_dev_replace()
1643 		kunmap_atomic(mapped_buffer);  in scrub_write_page_to_dev_replace()
1865 	void *mapped_buffer;  in scrub_checksum_tree_block()  local
1874 	mapped_buffer = kmap_atomic(page);  in scrub_checksum_tree_block()
1875 	h = (struct btrfs_header *)mapped_buffer;  in scrub_checksum_tree_block()
1900 	p = ((u8 *)mapped_buffer) + BTRFS_CSUM_SIZE;  in scrub_checksum_tree_block()
1906 		kunmap_atomic(mapped_buffer);  in scrub_checksum_tree_block()
1914 		mapped_buffer = kmap_atomic(page);  in scrub_checksum_tree_block()
1916 		p = mapped_buffer;  in scrub_checksum_tree_block()
1933 	void *mapped_buffer;  in scrub_checksum_super()  local
1944 	mapped_buffer = kmap_atomic(page);  in scrub_checksum_super()
1945 	s = (struct btrfs_super_block *)mapped_buffer;  in scrub_checksum_super()
1959 	p = ((u8 *)mapped_buffer) + BTRFS_CSUM_SIZE;  in scrub_checksum_super()
1965 		kunmap_atomic(mapped_buffer);  in scrub_checksum_super()
1973 		mapped_buffer = kmap_atomic(page);  in scrub_checksum_super()
1975 		p = mapped_buffer;  in scrub_checksum_super()