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()
388 				     struct ext4_extent_header *eh,  in ext4_valid_extent_entries()  argument
396 	if (eh->eh_entries == 0)  in ext4_valid_extent_entries()
399 	entries = le16_to_cpu(eh->eh_entries);  in ext4_valid_extent_entries()
403 		struct ext4_extent *ext = EXT_FIRST_EXTENT(eh);  in ext4_valid_extent_entries()
427 		struct ext4_extent_idx *ext_idx = EXT_FIRST_INDEX(eh);  in ext4_valid_extent_entries()
455 			    struct inode *inode, struct ext4_extent_header *eh,  in __ext4_ext_check()  argument
461 	if (unlikely(eh->eh_magic != EXT4_EXT_MAGIC)) {  in __ext4_ext_check()
465 	if (unlikely(le16_to_cpu(eh->eh_depth) != depth)) {  in __ext4_ext_check()
469 	if (unlikely(eh->eh_max == 0)) {  in __ext4_ext_check()
474 	if (unlikely(le16_to_cpu(eh->eh_max) > max)) {  in __ext4_ext_check()
478 	if (unlikely(le16_to_cpu(eh->eh_entries) > le16_to_cpu(eh->eh_max))) {  in __ext4_ext_check()
482 	if (unlikely((eh->eh_entries == 0) && (depth > 0))) {  in __ext4_ext_check()
486 	if (!ext4_valid_extent_entries(inode, eh, lblk, &pblk, depth)) {  in __ext4_ext_check()
496 	    !ext4_extent_block_csum_verify(inode, eh)) {  in __ext4_ext_check()
508 			     le16_to_cpu(eh->eh_magic),  in __ext4_ext_check()
509 			     le16_to_cpu(eh->eh_entries),  in __ext4_ext_check()
510 			     le16_to_cpu(eh->eh_max),  in __ext4_ext_check()
511 			     max, le16_to_cpu(eh->eh_depth), depth);  in __ext4_ext_check()
515 #define ext4_ext_check(inode, eh, depth, pblk)			\  argument
516 	__ext4_ext_check(__func__, __LINE__, (inode), (eh), (depth), (pblk), 0)
524 			       struct ext4_extent_header *eh)  in ext4_cache_extents()  argument
526 	struct ext4_extent *ex = EXT_FIRST_EXTENT(eh);  in ext4_cache_extents()
530 	for (i = le16_to_cpu(eh->eh_entries); i > 0; i--, ex++) {  in ext4_cache_extents()
582 		struct ext4_extent_header *eh = ext_block_hdr(bh);  in __read_extent_tree_block()  local
583 		ext4_cache_extents(inode, eh);  in __read_extent_tree_block()
688 	struct ext4_extent_header *eh;  in ext4_ext_show_leaf()  local
695 	eh = path[depth].p_hdr;  in ext4_ext_show_leaf()
696 	ex = EXT_FIRST_EXTENT(eh);  in ext4_ext_show_leaf()
700 	for (i = 0; i < le16_to_cpu(eh->eh_entries); i++, ex++) {  in ext4_ext_show_leaf()
754 	struct ext4_extent_header *eh = path->p_hdr;  in ext4_ext_binsearch_idx()  local
760 	l = EXT_FIRST_INDEX(eh) + 1;  in ext4_ext_binsearch_idx()
761 	r = EXT_LAST_INDEX(eh);  in ext4_ext_binsearch_idx()
783 		chix = ix = EXT_FIRST_INDEX(eh);  in ext4_ext_binsearch_idx()
784 		for (k = 0; k < le16_to_cpu(eh->eh_entries); k++, ix++) {  in ext4_ext_binsearch_idx()
789 				       ix, EXT_FIRST_INDEX(eh));  in ext4_ext_binsearch_idx()
815 	struct ext4_extent_header *eh = path->p_hdr;  in ext4_ext_binsearch()  local
818 	if (eh->eh_entries == 0) {  in ext4_ext_binsearch()
828 	l = EXT_FIRST_EXTENT(eh) + 1;  in ext4_ext_binsearch()
829 	r = EXT_LAST_EXTENT(eh);  in ext4_ext_binsearch()
855 		chex = ex = EXT_FIRST_EXTENT(eh);  in ext4_ext_binsearch()
856 		for (k = 0; k < le16_to_cpu(eh->eh_entries); k++, ex++) {  in ext4_ext_binsearch()
871 	struct ext4_extent_header *eh;  in ext4_ext_tree_init()  local
873 	eh = ext_inode_hdr(inode);  in ext4_ext_tree_init()
874 	eh->eh_depth = 0;  in ext4_ext_tree_init()
875 	eh->eh_entries = 0;  in ext4_ext_tree_init()
876 	eh->eh_magic = EXT4_EXT_MAGIC;  in ext4_ext_tree_init()
877 	eh->eh_max = cpu_to_le16(ext4_ext_space_root(inode, 0));  in ext4_ext_tree_init()
878 	eh->eh_generation = 0;  in ext4_ext_tree_init()
886 	struct ext4_extent_header *eh;  in ext4_find_extent()  local
896 	eh = ext_inode_hdr(inode);  in ext4_find_extent()
920 	path[0].p_hdr = eh;  in ext4_find_extent()
925 		ext4_cache_extents(inode, eh);  in ext4_find_extent()
929 			  ppos, le16_to_cpu(eh->eh_entries), le16_to_cpu(eh->eh_max));  in ext4_find_extent()
942 		eh = ext_block_hdr(bh);  in ext4_find_extent()
945 		path[ppos].p_hdr = eh;  in ext4_find_extent()
1542 	struct ext4_extent_header *eh;  in ext4_ext_search_right()  local
1616 		eh = ext_block_hdr(bh);  in ext4_ext_search_right()
1617 		ix = EXT_FIRST_INDEX(eh);  in ext4_ext_search_right()
1624 	eh = ext_block_hdr(bh);  in ext4_ext_search_right()
1625 	ex = EXT_FIRST_EXTENT(eh);  in ext4_ext_search_right()
1710 	struct ext4_extent_header *eh;  in ext4_ext_correct_indexes()  local
1716 	eh = path[depth].p_hdr;  in ext4_ext_correct_indexes()
1719 	if (unlikely(ex == NULL || eh == NULL)) {  in ext4_ext_correct_indexes()
1721 				 "ex %p == NULL or eh %p == NULL", ex, eh);  in ext4_ext_correct_indexes()
1730 	if (ex != EXT_FIRST_EXTENT(eh)) {  in ext4_ext_correct_indexes()
1807 	struct ext4_extent_header *eh;  in ext4_ext_try_to_merge_right()  local
1813 	eh = path[depth].p_hdr;  in ext4_ext_try_to_merge_right()
1815 	while (ex < EXT_LAST_EXTENT(eh)) {  in ext4_ext_try_to_merge_right()
1825 		if (ex + 1 < EXT_LAST_EXTENT(eh)) {  in ext4_ext_try_to_merge_right()
1826 			len = (EXT_LAST_EXTENT(eh) - ex - 1)  in ext4_ext_try_to_merge_right()
1830 		le16_add_cpu(&eh->eh_entries, -1);  in ext4_ext_try_to_merge_right()
1832 		WARN_ON(eh->eh_entries == 0);  in ext4_ext_try_to_merge_right()
1833 		if (!eh->eh_entries)  in ext4_ext_try_to_merge_right()
1834 			EXT4_ERROR_INODE(inode, "eh->eh_entries = 0!");  in ext4_ext_try_to_merge_right()
1896 	struct ext4_extent_header *eh;  in ext4_ext_try_to_merge()  local
1902 	eh = path[depth].p_hdr;  in ext4_ext_try_to_merge()
1904 	if (ex > EXT_FIRST_EXTENT(eh))  in ext4_ext_try_to_merge()
1975 	struct ext4_extent_header *eh;  in ext4_ext_insert_extent()  local
1991 	eh = path[depth].p_hdr;  in ext4_ext_insert_extent()
2007 		if (ex < EXT_LAST_EXTENT(eh) &&  in ext4_ext_insert_extent()
2013 		} else if ((ex > EXT_FIRST_EXTENT(eh)) &&  in ext4_ext_insert_extent()
2072 	eh = path[depth].p_hdr;  in ext4_ext_insert_extent()
2073 	if (le16_to_cpu(eh->eh_entries) < le16_to_cpu(eh->eh_max))  in ext4_ext_insert_extent()
2077 	fex = EXT_LAST_EXTENT(eh);  in ext4_ext_insert_extent()
2088 		eh = npath[depth].p_hdr;  in ext4_ext_insert_extent()
2089 		if (le16_to_cpu(eh->eh_entries) < le16_to_cpu(eh->eh_max)) {  in ext4_ext_insert_extent()
2091 				  le16_to_cpu(eh->eh_entries));  in ext4_ext_insert_extent()
2096 			  le16_to_cpu(eh->eh_entries), le16_to_cpu(eh->eh_max));  in ext4_ext_insert_extent()
2111 	eh = path[depth].p_hdr;  in ext4_ext_insert_extent()
2127 		nearex = EXT_FIRST_EXTENT(eh);  in ext4_ext_insert_extent()
2151 		len = EXT_LAST_EXTENT(eh) - nearex + 1;  in ext4_ext_insert_extent()
2165 	le16_add_cpu(&eh->eh_entries, 1);  in ext4_ext_insert_extent()
2578 	struct ext4_extent_header *eh;  in ext4_ext_rm_leaf()  local
2591 	eh = path[depth].p_hdr;  in ext4_ext_rm_leaf()
2599 		ex = EXT_LAST_EXTENT(eh);  in ext4_ext_rm_leaf()
2606 	while (ex >= EXT_FIRST_EXTENT(eh) &&  in ext4_ext_rm_leaf()
2663 		if (ex == EXT_FIRST_EXTENT(eh)) {  in ext4_ext_rm_leaf()
2716 				memmove(ex, ex+1, (EXT_LAST_EXTENT(eh) - ex) *  in ext4_ext_rm_leaf()
2720 				memset(EXT_LAST_EXTENT(eh), 0,  in ext4_ext_rm_leaf()
2723 			le16_add_cpu(&eh->eh_entries, -1);  in ext4_ext_rm_leaf()
2737 	if (correct_index && eh->eh_entries)  in ext4_ext_rm_leaf()
2747 	if (partial->state == tofree && ex >= EXT_FIRST_EXTENT(eh)) {  in ext4_ext_rm_leaf()
2765 	if (err == 0 && eh->eh_entries == 0 && path[depth].p_bh != NULL)  in ext4_ext_rm_leaf()
3421 	struct ext4_extent_header *eh;  in ext4_ext_convert_to_initialized()  local
3442 	eh = path[depth].p_hdr;  in ext4_ext_convert_to_initialized()
3473 		(ex > EXT_FIRST_EXTENT(eh))) {	/*L2*/  in ext4_ext_convert_to_initialized()
3518 		   ex < EXT_LAST_EXTENT(eh)) {	/*L2*/  in ext4_ext_convert_to_initialized()