2693 			void *kaddr;  in extent_prepare_write()  local
2695 			kaddr = kmap_atomic(page, KM_USER0);  in extent_prepare_write()
2697 				memset(kaddr + to, 0, block_off_end - to);  in extent_prepare_write()
2699 				memset(kaddr + block_off_start, 0,  in extent_prepare_write()
2702 			kunmap_atomic(kaddr, KM_USER0);  in extent_prepare_write()
3418 	char *kaddr;  in read_extent_buffer()  local
3432 		kaddr = kmap_atomic(page, KM_USER1);  in read_extent_buffer()
3433 		memcpy(dst, kaddr + offset, cur);  in read_extent_buffer()
3434 		kunmap_atomic(kaddr, KM_USER1);  in read_extent_buffer()
3449 	char *kaddr;  in map_private_extent_buffer()  local
3475 	kaddr = kmap_atomic(p, km);  in map_private_extent_buffer()
3476 	*token = kaddr;  in map_private_extent_buffer()
3477 	*map = kaddr + offset;  in map_private_extent_buffer()
3499 		eb->kaddr = *map;  in map_extent_buffer()
3518 	char *kaddr;  in memcmp_extent_buffer()  local
3534 		kaddr = kmap_atomic(page, KM_USER0);  in memcmp_extent_buffer()
3535 		ret = memcmp(ptr, kaddr + offset, cur);  in memcmp_extent_buffer()
3536 		kunmap_atomic(kaddr, KM_USER0);  in memcmp_extent_buffer()
3554 	char *kaddr;  in write_extent_buffer()  local
3569 		kaddr = kmap_atomic(page, KM_USER1);  in write_extent_buffer()
3570 		memcpy(kaddr + offset, src, cur);  in write_extent_buffer()
3571 		kunmap_atomic(kaddr, KM_USER1);  in write_extent_buffer()
3586 	char *kaddr;  in memset_extent_buffer()  local
3600 		kaddr = kmap_atomic(page, KM_USER0);  in memset_extent_buffer()
3601 		memset(kaddr + offset, c, cur);  in memset_extent_buffer()
3602 		kunmap_atomic(kaddr, KM_USER0);  in memset_extent_buffer()
3618 	char *kaddr;  in copy_extent_buffer()  local
3633 		kaddr = kmap_atomic(page, KM_USER0);  in copy_extent_buffer()
3634 		read_extent_buffer(src, kaddr + offset, src_offset, cur);  in copy_extent_buffer()
3635 		kunmap_atomic(kaddr, KM_USER0);  in copy_extent_buffer()