1755 void page_zero_new_buffers(struct page *page, unsigned from, unsigned to)  in page_zero_new_buffers()  argument
1770 			if (block_end > from && block_start < to) {  in page_zero_new_buffers()
1774 					start = max(from, block_start);  in page_zero_new_buffers()
1795 	unsigned from = pos & (PAGE_CACHE_SIZE - 1);  in __block_write_begin()  local
1796 	unsigned to = from + len;  in __block_write_begin()
1805 	BUG_ON(from > PAGE_CACHE_SIZE);  in __block_write_begin()
1807 	BUG_ON(from > to);  in __block_write_begin()
1820 		if (block_end <= from || block_start >= to) {  in __block_write_begin()
1843 				if (block_end > to || block_start < from)  in __block_write_begin()
1846 						block_start, from);  in __block_write_begin()
1857 		     (block_start < from || block_end > to)) {  in __block_write_begin()
1871 		page_zero_new_buffers(page, from, to);  in __block_write_begin()
1877 		unsigned from, unsigned to)  in __block_commit_write()  argument
1890 		if (block_end <= from || block_start >= to) {  in __block_commit_write()
2021 					unsigned long from)  in block_is_partially_uptodate()  argument
2033 	to = min_t(unsigned, PAGE_CACHE_SIZE - from, desc->count);  in block_is_partially_uptodate()
2034 	to = from + to;  in block_is_partially_uptodate()
2035 	if (from < blocksize && to > PAGE_CACHE_SIZE - blocksize)  in block_is_partially_uptodate()
2043 		if (block_end > from && block_start < to) {  in block_is_partially_uptodate()
2280 int block_commit_write(struct page *page, unsigned from, unsigned to)  in block_commit_write()  argument
2283 	__block_commit_write(inode,page,from,to);  in block_commit_write()
2422 	unsigned from, to;  in nobh_write_begin()  local
2431 	from = pos & (PAGE_CACHE_SIZE - 1);  in nobh_write_begin()
2432 	to = from + len;  in nobh_write_begin()
2495 			zero_user_segments(page, block_start, from,  in nobh_write_begin()
2501 		if (block_start < from || block_end > to) {  in nobh_write_begin()
2541 	page_zero_new_buffers(page, from, to);  in nobh_write_begin()
2640 			loff_t from, get_block_t *get_block)  in nobh_truncate_page()  argument
2642 	pgoff_t index = from >> PAGE_CACHE_SHIFT;  in nobh_truncate_page()
2643 	unsigned offset = from & (PAGE_CACHE_SIZE-1);  in nobh_truncate_page()
2671 		return block_truncate_page(mapping, from, get_block);  in nobh_truncate_page()
2718 			loff_t from, get_block_t *get_block)  in block_truncate_page()  argument
2720 	pgoff_t index = from >> PAGE_CACHE_SHIFT;  in block_truncate_page()
2721 	unsigned offset = from & (PAGE_CACHE_SIZE-1);  in block_truncate_page()