1878 	unsigned int block_start, block_end;  in page_zero_new_buffers()  local
1886 	block_start = 0;  in page_zero_new_buffers()
1888 		block_end = block_start + bh->b_size;  in page_zero_new_buffers()
1891 			if (block_end > from && block_start < to) {  in page_zero_new_buffers()
1895 					start = max(from, block_start);  in page_zero_new_buffers()
1907 		block_start = block_end;  in page_zero_new_buffers()
1916 	unsigned block_start, block_end;  in __block_prepare_write()  local
1935 	for(bh = head, block_start = 0; bh != head || !block_start;  in __block_prepare_write()
1936 	    block++, block_start=block_end, bh = bh->b_this_page) {  in __block_prepare_write()
1937 		block_end = block_start + blocksize;  in __block_prepare_write()
1938 		if (block_end <= from || block_start >= to) {  in __block_prepare_write()
1961 				if (block_end > to || block_start < from)  in __block_prepare_write()
1964 						block_start, from);  in __block_prepare_write()
1975 		     (block_start < from || block_end > to)) {  in __block_prepare_write()
1996 	unsigned block_start, block_end;  in __block_commit_write()  local
2003 	for(bh = head = page_buffers(page), block_start = 0;  in __block_commit_write()
2004 	    bh != head || !block_start;  in __block_commit_write()
2005 	    block_start=block_end, bh = bh->b_this_page) {  in __block_commit_write()
2006 		block_end = block_start + blocksize;  in __block_commit_write()
2007 		if (block_end <= from || block_start >= to) {  in __block_commit_write()
2172 	unsigned block_start, block_end, blocksize;  in block_is_partially_uptodate()  local
2188 	block_start = 0;  in block_is_partially_uptodate()
2190 		block_end = block_start + blocksize;  in block_is_partially_uptodate()
2191 		if (block_end > from && block_start < to) {  in block_is_partially_uptodate()
2199 		block_start = block_end;  in block_is_partially_uptodate()
2550 	unsigned block_start, block_end;  in nobh_write_begin()  local
2599 	for (block_start = 0, block_in_page = 0, bh = head;  in nobh_write_begin()
2600 		  block_start < PAGE_CACHE_SIZE;  in nobh_write_begin()
2601 		  block_in_page++, block_start += blocksize, bh = bh->b_this_page) {  in nobh_write_begin()
2604 		block_end = block_start + blocksize;  in nobh_write_begin()
2607 		if (block_start >= to)  in nobh_write_begin()
2622 			zero_user_segments(page, block_start, from,  in nobh_write_begin()
2628 		if (block_start < from || block_end > to) {  in nobh_write_begin()