50 				     struct ext4_extent_header *eh)  in ext4_extent_block_csum()  argument
56 	csum = ext4_chksum(sbi, ei->i_csum_seed, (__u8 *)eh,  in ext4_extent_block_csum()
57 			   EXT4_EXTENT_TAIL_OFFSET(eh));  in ext4_extent_block_csum()
62 					 struct ext4_extent_header *eh)  in ext4_extent_block_csum_verify()  argument
69 	et = find_ext4_extent_tail(eh);  in ext4_extent_block_csum_verify()
70 	if (et->et_checksum != ext4_extent_block_csum(inode, eh))  in ext4_extent_block_csum_verify()
76 				       struct ext4_extent_header *eh)  in ext4_extent_block_csum_set()  argument
83 	et = find_ext4_extent_tail(eh);  in ext4_extent_block_csum_set()
84 	et->et_checksum = ext4_extent_block_csum(inode, eh);  in ext4_extent_block_csum_set()
356 				     struct ext4_extent_header *eh,  in ext4_valid_extent_entries()  argument
360 	if (eh->eh_entries == 0)  in ext4_valid_extent_entries()
363 	entries = le16_to_cpu(eh->eh_entries);  in ext4_valid_extent_entries()
367 		struct ext4_extent *ext = EXT_FIRST_EXTENT(eh);  in ext4_valid_extent_entries()
387 		struct ext4_extent_idx *ext_idx = EXT_FIRST_INDEX(eh);  in ext4_valid_extent_entries()
399 			    struct inode *inode, struct ext4_extent_header *eh,  in __ext4_ext_check()  argument
405 	if (unlikely(eh->eh_magic != EXT4_EXT_MAGIC)) {  in __ext4_ext_check()
409 	if (unlikely(le16_to_cpu(eh->eh_depth) != depth)) {  in __ext4_ext_check()
413 	if (unlikely(eh->eh_max == 0)) {  in __ext4_ext_check()
418 	if (unlikely(le16_to_cpu(eh->eh_max) > max)) {  in __ext4_ext_check()
422 	if (unlikely(le16_to_cpu(eh->eh_entries) > le16_to_cpu(eh->eh_max))) {  in __ext4_ext_check()
426 	if (!ext4_valid_extent_entries(inode, eh, &pblk, depth)) {  in __ext4_ext_check()
436 	    !ext4_extent_block_csum_verify(inode, eh)) {  in __ext4_ext_check()
448 			     le16_to_cpu(eh->eh_magic),  in __ext4_ext_check()
449 			     le16_to_cpu(eh->eh_entries),  in __ext4_ext_check()
450 			     le16_to_cpu(eh->eh_max),  in __ext4_ext_check()
451 			     max, le16_to_cpu(eh->eh_depth), depth);  in __ext4_ext_check()
455 #define ext4_ext_check(inode, eh, depth, pblk)			\  argument
456 	__ext4_ext_check(__func__, __LINE__, (inode), (eh), (depth), (pblk))
464 			       struct ext4_extent_header *eh)  in ext4_cache_extents()  argument
466 	struct ext4_extent *ex = EXT_FIRST_EXTENT(eh);  in ext4_cache_extents()
470 	for (i = le16_to_cpu(eh->eh_entries); i > 0; i--, ex++) {  in ext4_cache_extents()
520 		struct ext4_extent_header *eh = ext_block_hdr(bh);  in __read_extent_tree_block()  local
521 		ext4_cache_extents(inode, eh);  in __read_extent_tree_block()
628 	struct ext4_extent_header *eh;  in ext4_ext_show_leaf()  local
635 	eh = path[depth].p_hdr;  in ext4_ext_show_leaf()
636 	ex = EXT_FIRST_EXTENT(eh);  in ext4_ext_show_leaf()
640 	for (i = 0; i < le16_to_cpu(eh->eh_entries); i++, ex++) {  in ext4_ext_show_leaf()
707 	struct ext4_extent_header *eh = path->p_hdr;  in ext4_ext_binsearch_idx()  local
713 	l = EXT_FIRST_INDEX(eh) + 1;  in ext4_ext_binsearch_idx()
714 	r = EXT_LAST_INDEX(eh);  in ext4_ext_binsearch_idx()
735 		chix = ix = EXT_FIRST_INDEX(eh);  in ext4_ext_binsearch_idx()
736 		for (k = 0; k < le16_to_cpu(eh->eh_entries); k++, ix++) {  in ext4_ext_binsearch_idx()
741 				       ix, EXT_FIRST_INDEX(eh));  in ext4_ext_binsearch_idx()
767 	struct ext4_extent_header *eh = path->p_hdr;  in ext4_ext_binsearch()  local
770 	if (eh->eh_entries == 0) {  in ext4_ext_binsearch()
780 	l = EXT_FIRST_EXTENT(eh) + 1;  in ext4_ext_binsearch()
781 	r = EXT_LAST_EXTENT(eh);  in ext4_ext_binsearch()
806 		chex = ex = EXT_FIRST_EXTENT(eh);  in ext4_ext_binsearch()
807 		for (k = 0; k < le16_to_cpu(eh->eh_entries); k++, ex++) {  in ext4_ext_binsearch()
822 	struct ext4_extent_header *eh;  in ext4_ext_tree_init()  local
824 	eh = ext_inode_hdr(inode);  in ext4_ext_tree_init()
825 	eh->eh_depth = 0;  in ext4_ext_tree_init()
826 	eh->eh_entries = 0;  in ext4_ext_tree_init()
827 	eh->eh_magic = EXT4_EXT_MAGIC;  in ext4_ext_tree_init()
828 	eh->eh_max = cpu_to_le16(ext4_ext_space_root(inode, 0));  in ext4_ext_tree_init()
829 	eh->eh_generation = 0;  in ext4_ext_tree_init()
837 	struct ext4_extent_header *eh;  in ext4_find_extent()  local
847 	eh = ext_inode_hdr(inode);  in ext4_find_extent()
871 	path[0].p_hdr = eh;  in ext4_find_extent()
876 		ext4_cache_extents(inode, eh);  in ext4_find_extent()
880 			  ppos, le16_to_cpu(eh->eh_entries), le16_to_cpu(eh->eh_max));  in ext4_find_extent()
894 		eh = ext_block_hdr(bh);  in ext4_find_extent()
897 		path[ppos].p_hdr = eh;  in ext4_find_extent()
1494 	struct ext4_extent_header *eh;  in ext4_ext_search_right()  local
1571 		eh = ext_block_hdr(bh);  in ext4_ext_search_right()
1572 		ix = EXT_FIRST_INDEX(eh);  in ext4_ext_search_right()
1580 	eh = ext_block_hdr(bh);  in ext4_ext_search_right()
1581 	ex = EXT_FIRST_EXTENT(eh);  in ext4_ext_search_right()
1666 	struct ext4_extent_header *eh;  in ext4_ext_correct_indexes()  local
1672 	eh = path[depth].p_hdr;  in ext4_ext_correct_indexes()
1675 	if (unlikely(ex == NULL || eh == NULL)) {  in ext4_ext_correct_indexes()
1677 				 "ex %p == NULL or eh %p == NULL", ex, eh);  in ext4_ext_correct_indexes()
1686 	if (ex != EXT_FIRST_EXTENT(eh)) {  in ext4_ext_correct_indexes()
1763 	struct ext4_extent_header *eh;  in ext4_ext_try_to_merge_right()  local
1769 	eh = path[depth].p_hdr;  in ext4_ext_try_to_merge_right()
1771 	while (ex < EXT_LAST_EXTENT(eh)) {  in ext4_ext_try_to_merge_right()
1781 		if (ex + 1 < EXT_LAST_EXTENT(eh)) {  in ext4_ext_try_to_merge_right()
1782 			len = (EXT_LAST_EXTENT(eh) - ex - 1)  in ext4_ext_try_to_merge_right()
1786 		le16_add_cpu(&eh->eh_entries, -1);  in ext4_ext_try_to_merge_right()
1788 		WARN_ON(eh->eh_entries == 0);  in ext4_ext_try_to_merge_right()
1789 		if (!eh->eh_entries)  in ext4_ext_try_to_merge_right()
1851 	struct ext4_extent_header *eh;  in ext4_ext_try_to_merge()  local
1857 	eh = path[depth].p_hdr;  in ext4_ext_try_to_merge()
1859 	if (ex > EXT_FIRST_EXTENT(eh))  in ext4_ext_try_to_merge()
1930 	struct ext4_extent_header *eh;  in ext4_ext_insert_extent()  local
1946 	eh = path[depth].p_hdr;  in ext4_ext_insert_extent()
1962 		if (ex < EXT_LAST_EXTENT(eh) &&  in ext4_ext_insert_extent()
1968 		} else if ((ex > EXT_FIRST_EXTENT(eh)) &&  in ext4_ext_insert_extent()
1993 			eh = path[depth].p_hdr;  in ext4_ext_insert_extent()
2022 			eh = path[depth].p_hdr;  in ext4_ext_insert_extent()
2029 	eh = path[depth].p_hdr;  in ext4_ext_insert_extent()
2030 	if (le16_to_cpu(eh->eh_entries) < le16_to_cpu(eh->eh_max))  in ext4_ext_insert_extent()
2034 	fex = EXT_LAST_EXTENT(eh);  in ext4_ext_insert_extent()
2045 		eh = npath[depth].p_hdr;  in ext4_ext_insert_extent()
2046 		if (le16_to_cpu(eh->eh_entries) < le16_to_cpu(eh->eh_max)) {  in ext4_ext_insert_extent()
2048 				  le16_to_cpu(eh->eh_entries));  in ext4_ext_insert_extent()
2053 			  le16_to_cpu(eh->eh_entries), le16_to_cpu(eh->eh_max));  in ext4_ext_insert_extent()
2067 	eh = path[depth].p_hdr;  in ext4_ext_insert_extent()
2083 		nearex = EXT_FIRST_EXTENT(eh);  in ext4_ext_insert_extent()
2107 		len = EXT_LAST_EXTENT(eh) - nearex + 1;  in ext4_ext_insert_extent()
2121 	le16_add_cpu(&eh->eh_entries, 1);  in ext4_ext_insert_extent()
2559 	struct ext4_extent_header *eh;  in ext4_ext_rm_leaf()  local
2572 	eh = path[depth].p_hdr;  in ext4_ext_rm_leaf()
2580 		ex = EXT_LAST_EXTENT(eh);  in ext4_ext_rm_leaf()
2587 	while (ex >= EXT_FIRST_EXTENT(eh) &&  in ext4_ext_rm_leaf()
2645 		if (ex == EXT_FIRST_EXTENT(eh)) {  in ext4_ext_rm_leaf()
2698 				memmove(ex, ex+1, (EXT_LAST_EXTENT(eh) - ex) *  in ext4_ext_rm_leaf()
2702 				memset(EXT_LAST_EXTENT(eh), 0,  in ext4_ext_rm_leaf()
2705 			le16_add_cpu(&eh->eh_entries, -1);  in ext4_ext_rm_leaf()
2719 	if (correct_index && eh->eh_entries)  in ext4_ext_rm_leaf()
2729 	if (partial->state == tofree && ex >= EXT_FIRST_EXTENT(eh)) {  in ext4_ext_rm_leaf()
2747 	if (err == 0 && eh->eh_entries == 0 && path[depth].p_bh != NULL)  in ext4_ext_rm_leaf()
3387 	struct ext4_extent_header *eh;  in ext4_ext_convert_to_initialized()  local
3407 	eh = path[depth].p_hdr;  in ext4_ext_convert_to_initialized()
3438 		(ex > EXT_FIRST_EXTENT(eh))) {	/*L2*/  in ext4_ext_convert_to_initialized()
3483 		   ex < EXT_LAST_EXTENT(eh)) {	/*L2*/  in ext4_ext_convert_to_initialized()