1847 	unsigned int block_start, block_end;  in page_zero_new_buffers()  local
1855 	block_start = 0;  in page_zero_new_buffers()
1857 		block_end = block_start + bh->b_size;  in page_zero_new_buffers()
1860 			if (block_end > from && block_start < to) {  in page_zero_new_buffers()
1864 					start = max(from, block_start);  in page_zero_new_buffers()
1876 		block_start = block_end;  in page_zero_new_buffers()
1888 	unsigned block_start, block_end;  in __block_write_begin()  local
1905 	for(bh = head, block_start = 0; bh != head || !block_start;  in __block_write_begin()
1906 	    block++, block_start=block_end, bh = bh->b_this_page) {  in __block_write_begin()
1907 		block_end = block_start + blocksize;  in __block_write_begin()
1908 		if (block_end <= from || block_start >= to) {  in __block_write_begin()
1931 				if (block_end > to || block_start < from)  in __block_write_begin()
1934 						block_start, from);  in __block_write_begin()
1945 		     (block_start < from || block_end > to)) {  in __block_write_begin()
1967 	unsigned block_start, block_end;  in __block_commit_write()  local
1975 	block_start = 0;  in __block_commit_write()
1977 		block_end = block_start + blocksize;  in __block_commit_write()
1978 		if (block_end <= from || block_start >= to) {  in __block_commit_write()
1987 		block_start = block_end;  in __block_commit_write()
2117 	unsigned block_start, block_end, blocksize;  in block_is_partially_uptodate()  local
2133 	block_start = 0;  in block_is_partially_uptodate()
2135 		block_end = block_start + blocksize;  in block_is_partially_uptodate()
2136 		if (block_end > from && block_start < to) {  in block_is_partially_uptodate()
2144 		block_start = block_end;  in block_is_partially_uptodate()
2513 	unsigned block_start, block_end;  in nobh_write_begin()  local
2561 	for (block_start = 0, block_in_page = 0, bh = head;  in nobh_write_begin()
2562 		  block_start < PAGE_CACHE_SIZE;  in nobh_write_begin()
2563 		  block_in_page++, block_start += blocksize, bh = bh->b_this_page) {  in nobh_write_begin()
2566 		block_end = block_start + blocksize;  in nobh_write_begin()
2569 		if (block_start >= to)  in nobh_write_begin()
2584 			zero_user_segments(page, block_start, from,  in nobh_write_begin()
2590 		if (block_start < from || block_end > to) {  in nobh_write_begin()