188 	const int nbits = len >> fs_info->sectorsize_bits;  in btrfs_subpage_start_reader()  local
192 	atomic_add(nbits, &subpage->readers);  in btrfs_subpage_start_reader()
199 	const int nbits = len >> fs_info->sectorsize_bits;  in btrfs_subpage_end_reader()  local
205 	ASSERT(atomic_read(&subpage->readers) >= nbits);  in btrfs_subpage_end_reader()
206 	last = atomic_sub_and_test(nbits, &subpage->readers);  in btrfs_subpage_end_reader()
233 	const int nbits = (len >> fs_info->sectorsize_bits);  in btrfs_subpage_start_writer()  local
239 	ret = atomic_add_return(nbits, &subpage->writers);  in btrfs_subpage_start_writer()
240 	ASSERT(ret == nbits);  in btrfs_subpage_start_writer()
247 	const int nbits = (len >> fs_info->sectorsize_bits);  in btrfs_subpage_end_and_test_writer()  local
251 	ASSERT(atomic_read(&subpage->writers) >= nbits);  in btrfs_subpage_end_and_test_writer()
252 	return atomic_sub_and_test(nbits, &subpage->writers);  in btrfs_subpage_end_and_test_writer()
301 	const int nbits = len >> fs_info->sectorsize_bits;  in btrfs_subpage_calc_bitmap()  local
310 	return (u16)(((1UL << nbits) - 1) << bit_start);  in btrfs_subpage_calc_bitmap()