145 	const unsigned blkbits = inode->i_blkbits;  in do_mpage_readpage()  local
146 	const unsigned blocks_per_page = PAGE_CACHE_SIZE >> blkbits;  in do_mpage_readpage()
147 	const unsigned blocksize = 1 << blkbits;  in do_mpage_readpage()
163 	block_in_file = (sector_t)page->index << (PAGE_CACHE_SHIFT - blkbits);  in do_mpage_readpage()
165 	last_block_in_file = (i_size_read(inode) + blocksize - 1) >> blkbits;  in do_mpage_readpage()
173 	nblocks = map_bh->b_size >> blkbits;  in do_mpage_readpage()
203 			map_bh->b_size = (last_block-block_in_file) << blkbits;  in do_mpage_readpage()
235 		nblocks = map_bh->b_size >> blkbits;  in do_mpage_readpage()
250 		zero_user_segment(page, first_hole << blkbits, PAGE_CACHE_SIZE);  in do_mpage_readpage()
275 			if (!bdev_read_page(bdev, blocks[0] << (blkbits - 9),  in do_mpage_readpage()
279 		bio = mpage_alloc(bdev, blocks[0] << (blkbits - 9),  in do_mpage_readpage()
286 	length = first_hole << blkbits;  in do_mpage_readpage()
293 	nblocks = map_bh->b_size >> blkbits;  in do_mpage_readpage()
469 	const unsigned blkbits = inode->i_blkbits;  in __mpage_writepage()  local
471 	const unsigned blocks_per_page = PAGE_CACHE_SIZE >> blkbits;  in __mpage_writepage()
540 	block_in_file = (sector_t)page->index << (PAGE_CACHE_SHIFT - blkbits);  in __mpage_writepage()
541 	last_block = (i_size - 1) >> blkbits;  in __mpage_writepage()
546 		map_bh.b_size = 1 << blkbits;  in __mpage_writepage()
598 			if (!bdev_write_page(bdev, blocks[0] << (blkbits - 9),  in __mpage_writepage()
604 		bio = mpage_alloc(bdev, blocks[0] << (blkbits - 9),  in __mpage_writepage()
615 	length = first_unmapped << blkbits;  in __mpage_writepage()
630 					boundary_block, 1 << blkbits);  in __mpage_writepage()