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()
368 				     struct ext4_extent_header *eh,  in ext4_valid_extent_entries()  argument
376 	if (eh->eh_entries == 0)  in ext4_valid_extent_entries()
379 	entries = le16_to_cpu(eh->eh_entries);  in ext4_valid_extent_entries()
383 		struct ext4_extent *ext = EXT_FIRST_EXTENT(eh);  in ext4_valid_extent_entries()
407 		struct ext4_extent_idx *ext_idx = EXT_FIRST_INDEX(eh);  in ext4_valid_extent_entries()
435 			    struct inode *inode, struct ext4_extent_header *eh,  in __ext4_ext_check()  argument
441 	if (unlikely(eh->eh_magic != EXT4_EXT_MAGIC)) {  in __ext4_ext_check()
445 	if (unlikely(le16_to_cpu(eh->eh_depth) != depth)) {  in __ext4_ext_check()
449 	if (unlikely(eh->eh_max == 0)) {  in __ext4_ext_check()
454 	if (unlikely(le16_to_cpu(eh->eh_max) > max)) {  in __ext4_ext_check()
458 	if (unlikely(le16_to_cpu(eh->eh_entries) > le16_to_cpu(eh->eh_max))) {  in __ext4_ext_check()
462 	if (unlikely((eh->eh_entries == 0) && (depth > 0))) {  in __ext4_ext_check()
466 	if (!ext4_valid_extent_entries(inode, eh, lblk, &pblk, depth)) {  in __ext4_ext_check()
476 	    !ext4_extent_block_csum_verify(inode, eh)) {  in __ext4_ext_check()
488 			     le16_to_cpu(eh->eh_magic),  in __ext4_ext_check()
489 			     le16_to_cpu(eh->eh_entries),  in __ext4_ext_check()
490 			     le16_to_cpu(eh->eh_max),  in __ext4_ext_check()
491 			     max, le16_to_cpu(eh->eh_depth), depth);  in __ext4_ext_check()
495 #define ext4_ext_check(inode, eh, depth, pblk)			\  argument
496 	__ext4_ext_check(__func__, __LINE__, (inode), (eh), (depth), (pblk), 0)
504 			       struct ext4_extent_header *eh)  in ext4_cache_extents()  argument
506 	struct ext4_extent *ex = EXT_FIRST_EXTENT(eh);  in ext4_cache_extents()
510 	for (i = le16_to_cpu(eh->eh_entries); i > 0; i--, ex++) {  in ext4_cache_extents()
562 		struct ext4_extent_header *eh = ext_block_hdr(bh);  in __read_extent_tree_block()  local
563 		ext4_cache_extents(inode, eh);  in __read_extent_tree_block()
669 	struct ext4_extent_header *eh;  in ext4_ext_show_leaf()  local
676 	eh = path[depth].p_hdr;  in ext4_ext_show_leaf()
677 	ex = EXT_FIRST_EXTENT(eh);  in ext4_ext_show_leaf()
681 	for (i = 0; i < le16_to_cpu(eh->eh_entries); i++, ex++) {  in ext4_ext_show_leaf()
748 	struct ext4_extent_header *eh = path->p_hdr;  in ext4_ext_binsearch_idx()  local
754 	l = EXT_FIRST_INDEX(eh) + 1;  in ext4_ext_binsearch_idx()
755 	r = EXT_LAST_INDEX(eh);  in ext4_ext_binsearch_idx()
776 		chix = ix = EXT_FIRST_INDEX(eh);  in ext4_ext_binsearch_idx()
777 		for (k = 0; k < le16_to_cpu(eh->eh_entries); k++, ix++) {  in ext4_ext_binsearch_idx()
782 				       ix, EXT_FIRST_INDEX(eh));  in ext4_ext_binsearch_idx()
808 	struct ext4_extent_header *eh = path->p_hdr;  in ext4_ext_binsearch()  local
811 	if (eh->eh_entries == 0) {  in ext4_ext_binsearch()
821 	l = EXT_FIRST_EXTENT(eh) + 1;  in ext4_ext_binsearch()
822 	r = EXT_LAST_EXTENT(eh);  in ext4_ext_binsearch()
847 		chex = ex = EXT_FIRST_EXTENT(eh);  in ext4_ext_binsearch()
848 		for (k = 0; k < le16_to_cpu(eh->eh_entries); k++, ex++) {  in ext4_ext_binsearch()
863 	struct ext4_extent_header *eh;  in ext4_ext_tree_init()  local
865 	eh = ext_inode_hdr(inode);  in ext4_ext_tree_init()
866 	eh->eh_depth = 0;  in ext4_ext_tree_init()
867 	eh->eh_entries = 0;  in ext4_ext_tree_init()
868 	eh->eh_magic = EXT4_EXT_MAGIC;  in ext4_ext_tree_init()
869 	eh->eh_max = cpu_to_le16(ext4_ext_space_root(inode, 0));  in ext4_ext_tree_init()
870 	eh->eh_generation = 0;  in ext4_ext_tree_init()
878 	struct ext4_extent_header *eh;  in ext4_find_extent()  local
888 	eh = ext_inode_hdr(inode);  in ext4_find_extent()
912 	path[0].p_hdr = eh;  in ext4_find_extent()
917 		ext4_cache_extents(inode, eh);  in ext4_find_extent()
921 			  ppos, le16_to_cpu(eh->eh_entries), le16_to_cpu(eh->eh_max));  in ext4_find_extent()
934 		eh = ext_block_hdr(bh);  in ext4_find_extent()
937 		path[ppos].p_hdr = eh;  in ext4_find_extent()
1530 	struct ext4_extent_header *eh;  in ext4_ext_search_right()  local
1604 		eh = ext_block_hdr(bh);  in ext4_ext_search_right()
1605 		ix = EXT_FIRST_INDEX(eh);  in ext4_ext_search_right()
1612 	eh = ext_block_hdr(bh);  in ext4_ext_search_right()
1613 	ex = EXT_FIRST_EXTENT(eh);  in ext4_ext_search_right()
1698 	struct ext4_extent_header *eh;  in ext4_ext_correct_indexes()  local
1704 	eh = path[depth].p_hdr;  in ext4_ext_correct_indexes()
1707 	if (unlikely(ex == NULL || eh == NULL)) {  in ext4_ext_correct_indexes()
1709 				 "ex %p == NULL or eh %p == NULL", ex, eh);  in ext4_ext_correct_indexes()
1718 	if (ex != EXT_FIRST_EXTENT(eh)) {  in ext4_ext_correct_indexes()
1795 	struct ext4_extent_header *eh;  in ext4_ext_try_to_merge_right()  local
1801 	eh = path[depth].p_hdr;  in ext4_ext_try_to_merge_right()
1803 	while (ex < EXT_LAST_EXTENT(eh)) {  in ext4_ext_try_to_merge_right()
1813 		if (ex + 1 < EXT_LAST_EXTENT(eh)) {  in ext4_ext_try_to_merge_right()
1814 			len = (EXT_LAST_EXTENT(eh) - ex - 1)  in ext4_ext_try_to_merge_right()
1818 		le16_add_cpu(&eh->eh_entries, -1);  in ext4_ext_try_to_merge_right()
1820 		WARN_ON(eh->eh_entries == 0);  in ext4_ext_try_to_merge_right()
1821 		if (!eh->eh_entries)  in ext4_ext_try_to_merge_right()
1883 	struct ext4_extent_header *eh;  in ext4_ext_try_to_merge()  local
1889 	eh = path[depth].p_hdr;  in ext4_ext_try_to_merge()
1891 	if (ex > EXT_FIRST_EXTENT(eh))  in ext4_ext_try_to_merge()
1962 	struct ext4_extent_header *eh;  in ext4_ext_insert_extent()  local
1978 	eh = path[depth].p_hdr;  in ext4_ext_insert_extent()
1994 		if (ex < EXT_LAST_EXTENT(eh) &&  in ext4_ext_insert_extent()
2000 		} else if ((ex > EXT_FIRST_EXTENT(eh)) &&  in ext4_ext_insert_extent()
2025 			eh = path[depth].p_hdr;  in ext4_ext_insert_extent()
2054 			eh = path[depth].p_hdr;  in ext4_ext_insert_extent()
2061 	eh = path[depth].p_hdr;  in ext4_ext_insert_extent()
2062 	if (le16_to_cpu(eh->eh_entries) < le16_to_cpu(eh->eh_max))  in ext4_ext_insert_extent()
2066 	fex = EXT_LAST_EXTENT(eh);  in ext4_ext_insert_extent()
2077 		eh = npath[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()
2080 				  le16_to_cpu(eh->eh_entries));  in ext4_ext_insert_extent()
2085 			  le16_to_cpu(eh->eh_entries), le16_to_cpu(eh->eh_max));  in ext4_ext_insert_extent()
2099 	eh = path[depth].p_hdr;  in ext4_ext_insert_extent()
2115 		nearex = EXT_FIRST_EXTENT(eh);  in ext4_ext_insert_extent()
2139 		len = EXT_LAST_EXTENT(eh) - nearex + 1;  in ext4_ext_insert_extent()
2153 	le16_add_cpu(&eh->eh_entries, 1);  in ext4_ext_insert_extent()
2591 	struct ext4_extent_header *eh;  in ext4_ext_rm_leaf()  local
2604 	eh = path[depth].p_hdr;  in ext4_ext_rm_leaf()
2612 		ex = EXT_LAST_EXTENT(eh);  in ext4_ext_rm_leaf()
2619 	while (ex >= EXT_FIRST_EXTENT(eh) &&  in ext4_ext_rm_leaf()
2677 		if (ex == EXT_FIRST_EXTENT(eh)) {  in ext4_ext_rm_leaf()
2730 				memmove(ex, ex+1, (EXT_LAST_EXTENT(eh) - ex) *  in ext4_ext_rm_leaf()
2734 				memset(EXT_LAST_EXTENT(eh), 0,  in ext4_ext_rm_leaf()
2737 			le16_add_cpu(&eh->eh_entries, -1);  in ext4_ext_rm_leaf()
2751 	if (correct_index && eh->eh_entries)  in ext4_ext_rm_leaf()
2761 	if (partial->state == tofree && ex >= EXT_FIRST_EXTENT(eh)) {  in ext4_ext_rm_leaf()
2779 	if (err == 0 && eh->eh_entries == 0 && path[depth].p_bh != NULL)  in ext4_ext_rm_leaf()
3419 	struct ext4_extent_header *eh;  in ext4_ext_convert_to_initialized()  local
3439 	eh = path[depth].p_hdr;  in ext4_ext_convert_to_initialized()
3470 		(ex > EXT_FIRST_EXTENT(eh))) {	/*L2*/  in ext4_ext_convert_to_initialized()
3515 		   ex < EXT_LAST_EXTENT(eh)) {	/*L2*/  in ext4_ext_convert_to_initialized()