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()
392 				     struct ext4_extent_header *eh,  in ext4_valid_extent_entries()  argument
400 	if (eh->eh_entries == 0)  in ext4_valid_extent_entries()
403 	entries = le16_to_cpu(eh->eh_entries);  in ext4_valid_extent_entries()
407 		struct ext4_extent *ext = EXT_FIRST_EXTENT(eh);  in ext4_valid_extent_entries()
431 		struct ext4_extent_idx *ext_idx = EXT_FIRST_INDEX(eh);  in ext4_valid_extent_entries()
459 			    struct inode *inode, struct ext4_extent_header *eh,  in __ext4_ext_check()  argument
465 	if (unlikely(eh->eh_magic != EXT4_EXT_MAGIC)) {  in __ext4_ext_check()
469 	if (unlikely(le16_to_cpu(eh->eh_depth) != depth)) {  in __ext4_ext_check()
473 	if (unlikely(eh->eh_max == 0)) {  in __ext4_ext_check()
478 	if (unlikely(le16_to_cpu(eh->eh_max) > max)) {  in __ext4_ext_check()
482 	if (unlikely(le16_to_cpu(eh->eh_entries) > le16_to_cpu(eh->eh_max))) {  in __ext4_ext_check()
486 	if (unlikely((eh->eh_entries == 0) && (depth > 0))) {  in __ext4_ext_check()
490 	if (!ext4_valid_extent_entries(inode, eh, lblk, &pblk, depth)) {  in __ext4_ext_check()
500 	    !ext4_extent_block_csum_verify(inode, eh)) {  in __ext4_ext_check()
512 			     le16_to_cpu(eh->eh_magic),  in __ext4_ext_check()
513 			     le16_to_cpu(eh->eh_entries),  in __ext4_ext_check()
514 			     le16_to_cpu(eh->eh_max),  in __ext4_ext_check()
515 			     max, le16_to_cpu(eh->eh_depth), depth);  in __ext4_ext_check()
519 #define ext4_ext_check(inode, eh, depth, pblk)			\  argument
520 	__ext4_ext_check(__func__, __LINE__, (inode), (eh), (depth), (pblk), 0)
528 			       struct ext4_extent_header *eh)  in ext4_cache_extents()  argument
530 	struct ext4_extent *ex = EXT_FIRST_EXTENT(eh);  in ext4_cache_extents()
534 	for (i = le16_to_cpu(eh->eh_entries); i > 0; i--, ex++) {  in ext4_cache_extents()
586 		struct ext4_extent_header *eh = ext_block_hdr(bh);  in __read_extent_tree_block()  local
587 		ext4_cache_extents(inode, eh);  in __read_extent_tree_block()
691 	struct ext4_extent_header *eh;  in ext4_ext_show_leaf()  local
698 	eh = path[depth].p_hdr;  in ext4_ext_show_leaf()
699 	ex = EXT_FIRST_EXTENT(eh);  in ext4_ext_show_leaf()
703 	for (i = 0; i < le16_to_cpu(eh->eh_entries); i++, ex++) {  in ext4_ext_show_leaf()
757 	struct ext4_extent_header *eh = path->p_hdr;  in ext4_ext_binsearch_idx()  local
763 	l = EXT_FIRST_INDEX(eh) + 1;  in ext4_ext_binsearch_idx()
764 	r = EXT_LAST_INDEX(eh);  in ext4_ext_binsearch_idx()
786 		chix = ix = EXT_FIRST_INDEX(eh);  in ext4_ext_binsearch_idx()
787 		for (k = 0; k < le16_to_cpu(eh->eh_entries); k++, ix++) {  in ext4_ext_binsearch_idx()
792 				       ix, EXT_FIRST_INDEX(eh));  in ext4_ext_binsearch_idx()
818 	struct ext4_extent_header *eh = path->p_hdr;  in ext4_ext_binsearch()  local
821 	if (eh->eh_entries == 0) {  in ext4_ext_binsearch()
831 	l = EXT_FIRST_EXTENT(eh) + 1;  in ext4_ext_binsearch()
832 	r = EXT_LAST_EXTENT(eh);  in ext4_ext_binsearch()
858 		chex = ex = EXT_FIRST_EXTENT(eh);  in ext4_ext_binsearch()
859 		for (k = 0; k < le16_to_cpu(eh->eh_entries); k++, ex++) {  in ext4_ext_binsearch()
874 	struct ext4_extent_header *eh;  in ext4_ext_tree_init()  local
876 	eh = ext_inode_hdr(inode);  in ext4_ext_tree_init()
877 	eh->eh_depth = 0;  in ext4_ext_tree_init()
878 	eh->eh_entries = 0;  in ext4_ext_tree_init()
879 	eh->eh_magic = EXT4_EXT_MAGIC;  in ext4_ext_tree_init()
880 	eh->eh_max = cpu_to_le16(ext4_ext_space_root(inode, 0));  in ext4_ext_tree_init()
881 	eh->eh_generation = 0;  in ext4_ext_tree_init()
889 	struct ext4_extent_header *eh;  in ext4_find_extent()  local
898 	eh = ext_inode_hdr(inode);  in ext4_find_extent()
922 	path[0].p_hdr = eh;  in ext4_find_extent()
927 		ext4_cache_extents(inode, eh);  in ext4_find_extent()
931 			  ppos, le16_to_cpu(eh->eh_entries), le16_to_cpu(eh->eh_max));  in ext4_find_extent()
944 		eh = ext_block_hdr(bh);  in ext4_find_extent()
947 		path[ppos].p_hdr = eh;  in ext4_find_extent()
1536 	struct ext4_extent_header *eh;  in ext4_ext_search_right()  local
1610 		eh = ext_block_hdr(bh);  in ext4_ext_search_right()
1611 		ix = EXT_FIRST_INDEX(eh);  in ext4_ext_search_right()
1618 	eh = ext_block_hdr(bh);  in ext4_ext_search_right()
1619 	ex = EXT_FIRST_EXTENT(eh);  in ext4_ext_search_right()
1704 	struct ext4_extent_header *eh;  in ext4_ext_correct_indexes()  local
1710 	eh = path[depth].p_hdr;  in ext4_ext_correct_indexes()
1713 	if (unlikely(ex == NULL || eh == NULL)) {  in ext4_ext_correct_indexes()
1715 				 "ex %p == NULL or eh %p == NULL", ex, eh);  in ext4_ext_correct_indexes()
1724 	if (ex != EXT_FIRST_EXTENT(eh)) {  in ext4_ext_correct_indexes()
1812 	struct ext4_extent_header *eh;  in ext4_ext_try_to_merge_right()  local
1818 	eh = path[depth].p_hdr;  in ext4_ext_try_to_merge_right()
1820 	while (ex < EXT_LAST_EXTENT(eh)) {  in ext4_ext_try_to_merge_right()
1830 		if (ex + 1 < EXT_LAST_EXTENT(eh)) {  in ext4_ext_try_to_merge_right()
1831 			len = (EXT_LAST_EXTENT(eh) - ex - 1)  in ext4_ext_try_to_merge_right()
1835 		le16_add_cpu(&eh->eh_entries, -1);  in ext4_ext_try_to_merge_right()
1837 		WARN_ON(eh->eh_entries == 0);  in ext4_ext_try_to_merge_right()
1838 		if (!eh->eh_entries)  in ext4_ext_try_to_merge_right()
1839 			EXT4_ERROR_INODE(inode, "eh->eh_entries = 0!");  in ext4_ext_try_to_merge_right()
1900 	struct ext4_extent_header *eh;  in ext4_ext_try_to_merge()  local
1906 	eh = path[depth].p_hdr;  in ext4_ext_try_to_merge()
1908 	if (ex > EXT_FIRST_EXTENT(eh))  in ext4_ext_try_to_merge()
1979 	struct ext4_extent_header *eh;  in ext4_ext_insert_extent()  local
1995 	eh = path[depth].p_hdr;  in ext4_ext_insert_extent()
2012 		if (ex < EXT_LAST_EXTENT(eh) &&  in ext4_ext_insert_extent()
2018 		} else if ((ex > EXT_FIRST_EXTENT(eh)) &&  in ext4_ext_insert_extent()
2077 	eh = path[depth].p_hdr;  in ext4_ext_insert_extent()
2078 	if (le16_to_cpu(eh->eh_entries) < le16_to_cpu(eh->eh_max))  in ext4_ext_insert_extent()
2082 	fex = EXT_LAST_EXTENT(eh);  in ext4_ext_insert_extent()
2096 		eh = npath[depth].p_hdr;  in ext4_ext_insert_extent()
2097 		if (le16_to_cpu(eh->eh_entries) < le16_to_cpu(eh->eh_max)) {  in ext4_ext_insert_extent()
2099 				  le16_to_cpu(eh->eh_entries));  in ext4_ext_insert_extent()
2105 			  le16_to_cpu(eh->eh_entries), le16_to_cpu(eh->eh_max));  in ext4_ext_insert_extent()
2120 	eh = path[depth].p_hdr;  in ext4_ext_insert_extent()
2136 		nearex = EXT_FIRST_EXTENT(eh);  in ext4_ext_insert_extent()
2160 		len = EXT_LAST_EXTENT(eh) - nearex + 1;  in ext4_ext_insert_extent()
2174 	le16_add_cpu(&eh->eh_entries, 1);  in ext4_ext_insert_extent()
2600 	struct ext4_extent_header *eh;  in ext4_ext_rm_leaf()  local
2613 	eh = path[depth].p_hdr;  in ext4_ext_rm_leaf()
2621 		ex = EXT_LAST_EXTENT(eh);  in ext4_ext_rm_leaf()
2628 	while (ex >= EXT_FIRST_EXTENT(eh) &&  in ext4_ext_rm_leaf()
2685 		if (ex == EXT_FIRST_EXTENT(eh)) {  in ext4_ext_rm_leaf()
2738 				memmove(ex, ex+1, (EXT_LAST_EXTENT(eh) - ex) *  in ext4_ext_rm_leaf()
2742 				memset(EXT_LAST_EXTENT(eh), 0,  in ext4_ext_rm_leaf()
2745 			le16_add_cpu(&eh->eh_entries, -1);  in ext4_ext_rm_leaf()
2759 	if (correct_index && eh->eh_entries)  in ext4_ext_rm_leaf()
2769 	if (partial->state == tofree && ex >= EXT_FIRST_EXTENT(eh)) {  in ext4_ext_rm_leaf()
2787 	if (err == 0 && eh->eh_entries == 0 && path[depth].p_bh != NULL)  in ext4_ext_rm_leaf()
3445 	struct ext4_extent_header *eh;  in ext4_ext_convert_to_initialized()  local
3465 	eh = path[depth].p_hdr;  in ext4_ext_convert_to_initialized()
3497 		(ex > EXT_FIRST_EXTENT(eh))) {	/*L2*/  in ext4_ext_convert_to_initialized()
3542 		   ex < EXT_LAST_EXTENT(eh)) {	/*L2*/  in ext4_ext_convert_to_initialized()