124 void ext4_xattr_inode_set_class(struct inode *ea_inode)  in ext4_xattr_inode_set_class()  argument
126 	lockdep_set_subclass(&ea_inode->i_rwsem, 1);  in ext4_xattr_inode_set_class()
317 static u64 ext4_xattr_inode_get_ref(struct inode *ea_inode)  in ext4_xattr_inode_get_ref()  argument
319 	return ((u64)ea_inode->i_ctime.tv_sec << 32) |  in ext4_xattr_inode_get_ref()
320 		(u32) inode_peek_iversion_raw(ea_inode);  in ext4_xattr_inode_get_ref()
323 static void ext4_xattr_inode_set_ref(struct inode *ea_inode, u64 ref_count)  in ext4_xattr_inode_set_ref()  argument
325 	ea_inode->i_ctime.tv_sec = (u32)(ref_count >> 32);  in ext4_xattr_inode_set_ref()
326 	inode_set_iversion_raw(ea_inode, ref_count & 0xffffffff);  in ext4_xattr_inode_set_ref()
329 static u32 ext4_xattr_inode_get_hash(struct inode *ea_inode)  in ext4_xattr_inode_get_hash()  argument
331 	return (u32)ea_inode->i_atime.tv_sec;  in ext4_xattr_inode_get_hash()
334 static void ext4_xattr_inode_set_hash(struct inode *ea_inode, u32 hash)  in ext4_xattr_inode_set_hash()  argument
336 	ea_inode->i_atime.tv_sec = hash;  in ext4_xattr_inode_set_hash()
342 static int ext4_xattr_inode_read(struct inode *ea_inode, void *buf, size_t size)  in ext4_xattr_inode_read()  argument
344 	int blocksize = 1 << ea_inode->i_blkbits;  in ext4_xattr_inode_read()
345 	int bh_count = (size + blocksize - 1) >> ea_inode->i_blkbits;  in ext4_xattr_inode_read()
357 	ret = ext4_bread_batch(ea_inode, 0 /* block */, bh_count,  in ext4_xattr_inode_read()
384 				 u32 ea_inode_hash, struct inode **ea_inode)  in ext4_xattr_inode_iget()  argument
432 	*ea_inode = inode;  in ext4_xattr_inode_iget()
440 ext4_xattr_inode_verify_hashes(struct inode *ea_inode,  in ext4_xattr_inode_verify_hashes()  argument
447 	hash = ext4_xattr_inode_hash(EXT4_SB(ea_inode->i_sb), buffer, size);  in ext4_xattr_inode_verify_hashes()
448 	if (hash != ext4_xattr_inode_get_hash(ea_inode))  in ext4_xattr_inode_verify_hashes()
472 	struct inode *ea_inode;  in ext4_xattr_inode_get()  local
476 				    le32_to_cpu(entry->e_hash), &ea_inode);  in ext4_xattr_inode_get()
478 		ea_inode = NULL;  in ext4_xattr_inode_get()
482 	if (i_size_read(ea_inode) != size) {  in ext4_xattr_inode_get()
483 		ext4_warning_inode(ea_inode,  in ext4_xattr_inode_get()
485 				   i_size_read(ea_inode), size);  in ext4_xattr_inode_get()
490 	err = ext4_xattr_inode_read(ea_inode, buffer, size);  in ext4_xattr_inode_get()
494 	if (!ext4_test_inode_state(ea_inode, EXT4_STATE_LUSTRE_EA_INODE)) {  in ext4_xattr_inode_get()
495 		err = ext4_xattr_inode_verify_hashes(ea_inode, entry, buffer,  in ext4_xattr_inode_get()
498 			ext4_warning_inode(ea_inode,  in ext4_xattr_inode_get()
505 					ext4_xattr_inode_get_hash(ea_inode),  in ext4_xattr_inode_get()
506 					ea_inode->i_ino, true /* reusable */);  in ext4_xattr_inode_get()
509 	iput(ea_inode);  in ext4_xattr_inode_get()
883 					struct inode *ea_inode,  in ext4_xattr_inode_free_quota()  argument
886 	if (ea_inode &&  in ext4_xattr_inode_free_quota()
887 	    ext4_test_inode_state(ea_inode, EXT4_STATE_LUSTRE_EA_INODE))  in ext4_xattr_inode_free_quota()
976 static int ext4_xattr_inode_update_ref(handle_t *handle, struct inode *ea_inode,  in ext4_xattr_inode_update_ref()  argument
979 	struct mb_cache *ea_inode_cache = EA_INODE_CACHE(ea_inode);  in ext4_xattr_inode_update_ref()
985 	inode_lock(ea_inode);  in ext4_xattr_inode_update_ref()
987 	ret = ext4_reserve_inode_write(handle, ea_inode, &iloc);  in ext4_xattr_inode_update_ref()
991 	ref_count = ext4_xattr_inode_get_ref(ea_inode);  in ext4_xattr_inode_update_ref()
993 	ext4_xattr_inode_set_ref(ea_inode, ref_count);  in ext4_xattr_inode_update_ref()
997 			  ea_inode->i_ino, ref_count);  in ext4_xattr_inode_update_ref()
1000 			WARN_ONCE(ea_inode->i_nlink, "EA inode %lu i_nlink=%u",  in ext4_xattr_inode_update_ref()
1001 				  ea_inode->i_ino, ea_inode->i_nlink);  in ext4_xattr_inode_update_ref()
1003 			set_nlink(ea_inode, 1);  in ext4_xattr_inode_update_ref()
1004 			ext4_orphan_del(handle, ea_inode);  in ext4_xattr_inode_update_ref()
1007 				hash = ext4_xattr_inode_get_hash(ea_inode);  in ext4_xattr_inode_update_ref()
1010 						      ea_inode->i_ino,  in ext4_xattr_inode_update_ref()
1016 			  ea_inode->i_ino, ref_count);  in ext4_xattr_inode_update_ref()
1019 			WARN_ONCE(ea_inode->i_nlink != 1,  in ext4_xattr_inode_update_ref()
1021 				  ea_inode->i_ino, ea_inode->i_nlink);  in ext4_xattr_inode_update_ref()
1023 			clear_nlink(ea_inode);  in ext4_xattr_inode_update_ref()
1024 			ext4_orphan_add(handle, ea_inode);  in ext4_xattr_inode_update_ref()
1027 				hash = ext4_xattr_inode_get_hash(ea_inode);  in ext4_xattr_inode_update_ref()
1029 						      ea_inode->i_ino);  in ext4_xattr_inode_update_ref()
1034 	ret = ext4_mark_iloc_dirty(handle, ea_inode, &iloc);  in ext4_xattr_inode_update_ref()
1036 		ext4_warning_inode(ea_inode,  in ext4_xattr_inode_update_ref()
1039 	inode_unlock(ea_inode);  in ext4_xattr_inode_update_ref()
1043 static int ext4_xattr_inode_inc_ref(handle_t *handle, struct inode *ea_inode)  in ext4_xattr_inode_inc_ref()  argument
1045 	return ext4_xattr_inode_update_ref(handle, ea_inode, 1);  in ext4_xattr_inode_inc_ref()
1048 static int ext4_xattr_inode_dec_ref(handle_t *handle, struct inode *ea_inode)  in ext4_xattr_inode_dec_ref()  argument
1050 	return ext4_xattr_inode_update_ref(handle, ea_inode, -1);  in ext4_xattr_inode_dec_ref()
1056 	struct inode *ea_inode;  in ext4_xattr_inode_inc_ref_all()  local
1069 					    &ea_inode);  in ext4_xattr_inode_inc_ref_all()
1072 		err = ext4_xattr_inode_inc_ref(handle, ea_inode);  in ext4_xattr_inode_inc_ref_all()
1074 			ext4_warning_inode(ea_inode, "inc ref error %d", err);  in ext4_xattr_inode_inc_ref_all()
1075 			iput(ea_inode);  in ext4_xattr_inode_inc_ref_all()
1078 		iput(ea_inode);  in ext4_xattr_inode_inc_ref_all()
1093 					    &ea_inode);  in ext4_xattr_inode_inc_ref_all()
1100 		err = ext4_xattr_inode_dec_ref(handle, ea_inode);  in ext4_xattr_inode_inc_ref_all()
1102 			ext4_warning_inode(ea_inode, "cleanup dec ref error %d",  in ext4_xattr_inode_inc_ref_all()
1104 		iput(ea_inode);  in ext4_xattr_inode_inc_ref_all()
1134 	struct inode *ea_inode;  in ext4_xattr_inode_dec_ref_all()  local
1151 					    &ea_inode);  in ext4_xattr_inode_dec_ref_all()
1155 		err = ext4_expand_inode_array(ea_inode_array, ea_inode);  in ext4_xattr_inode_dec_ref_all()
1157 			ext4_warning_inode(ea_inode,  in ext4_xattr_inode_dec_ref_all()
1159 			iput(ea_inode);  in ext4_xattr_inode_dec_ref_all()
1168 			ext4_warning_inode(ea_inode, "Ensure credits err=%d",  in ext4_xattr_inode_dec_ref_all()
1176 				ext4_warning_inode(ea_inode,  in ext4_xattr_inode_dec_ref_all()
1183 		err = ext4_xattr_inode_dec_ref(handle, ea_inode);  in ext4_xattr_inode_dec_ref_all()
1185 			ext4_warning_inode(ea_inode, "ea_inode dec ref err=%d",  in ext4_xattr_inode_dec_ref_all()
1191 			ext4_xattr_inode_free_quota(parent, ea_inode,  in ext4_xattr_inode_dec_ref_all()
1330 static int ext4_xattr_inode_write(handle_t *handle, struct inode *ea_inode,  in ext4_xattr_inode_write()  argument
1335 	int blocksize = ea_inode->i_sb->s_blocksize;  in ext4_xattr_inode_write()
1336 	int max_blocks = (bufsize + blocksize - 1) >> ea_inode->i_blkbits;  in ext4_xattr_inode_write()
1347 		ret = ext4_map_blocks(handle, ea_inode, &map,  in ext4_xattr_inode_write()
1350 			ext4_mark_inode_dirty(handle, ea_inode);  in ext4_xattr_inode_write()
1352 			    ext4_should_retry_alloc(ea_inode->i_sb, &retries)) {  in ext4_xattr_inode_write()
1368 		bh = ext4_getblk(handle, ea_inode, block, 0);  in ext4_xattr_inode_write()
1373 			EXT4_ERROR_INODE(ea_inode,  in ext4_xattr_inode_write()
1377 		ret = ext4_journal_get_write_access(handle, ea_inode->i_sb, bh,  in ext4_xattr_inode_write()
1384 		ext4_handle_dirty_metadata(handle, ea_inode, bh);  in ext4_xattr_inode_write()
1391 	inode_lock(ea_inode);  in ext4_xattr_inode_write()
1392 	i_size_write(ea_inode, wsize);  in ext4_xattr_inode_write()
1393 	ext4_update_i_disksize(ea_inode, wsize);  in ext4_xattr_inode_write()
1394 	inode_unlock(ea_inode);  in ext4_xattr_inode_write()
1396 	ret2 = ext4_mark_inode_dirty(handle, ea_inode);  in ext4_xattr_inode_write()
1412 	struct inode *ea_inode = NULL;  in ext4_xattr_inode_create()  local
1420 	ea_inode = ext4_new_inode(handle, inode->i_sb->s_root->d_inode,  in ext4_xattr_inode_create()
1423 	if (!IS_ERR(ea_inode)) {  in ext4_xattr_inode_create()
1424 		ea_inode->i_op = &ext4_file_inode_operations;  in ext4_xattr_inode_create()
1425 		ea_inode->i_fop = &ext4_file_operations;  in ext4_xattr_inode_create()
1426 		ext4_set_aops(ea_inode);  in ext4_xattr_inode_create()
1427 		ext4_xattr_inode_set_class(ea_inode);  in ext4_xattr_inode_create()
1428 		unlock_new_inode(ea_inode);  in ext4_xattr_inode_create()
1429 		ext4_xattr_inode_set_ref(ea_inode, 1);  in ext4_xattr_inode_create()
1430 		ext4_xattr_inode_set_hash(ea_inode, hash);  in ext4_xattr_inode_create()
1431 		err = ext4_mark_inode_dirty(handle, ea_inode);  in ext4_xattr_inode_create()
1433 			err = ext4_inode_attach_jinode(ea_inode);  in ext4_xattr_inode_create()
1435 			iput(ea_inode);  in ext4_xattr_inode_create()
1443 		dquot_free_inode(ea_inode);  in ext4_xattr_inode_create()
1444 		dquot_drop(ea_inode);  in ext4_xattr_inode_create()
1445 		inode_lock(ea_inode);  in ext4_xattr_inode_create()
1446 		ea_inode->i_flags |= S_NOQUOTA;  in ext4_xattr_inode_create()
1447 		inode_unlock(ea_inode);  in ext4_xattr_inode_create()
1450 	return ea_inode;  in ext4_xattr_inode_create()
1457 	struct inode *ea_inode;  in ext4_xattr_inode_cache_find()  local
1479 		ea_inode = ext4_iget(inode->i_sb, ce->e_value,  in ext4_xattr_inode_cache_find()
1481 		if (!IS_ERR(ea_inode) &&  in ext4_xattr_inode_cache_find()
1482 		    !is_bad_inode(ea_inode) &&  in ext4_xattr_inode_cache_find()
1483 		    (EXT4_I(ea_inode)->i_flags & EXT4_EA_INODE_FL) &&  in ext4_xattr_inode_cache_find()
1484 		    i_size_read(ea_inode) == value_len &&  in ext4_xattr_inode_cache_find()
1485 		    !ext4_xattr_inode_read(ea_inode, ea_data, value_len) &&  in ext4_xattr_inode_cache_find()
1486 		    !ext4_xattr_inode_verify_hashes(ea_inode, NULL, ea_data,  in ext4_xattr_inode_cache_find()
1492 			return ea_inode;  in ext4_xattr_inode_cache_find()
1495 		if (!IS_ERR(ea_inode))  in ext4_xattr_inode_cache_find()
1496 			iput(ea_inode);  in ext4_xattr_inode_cache_find()
1510 	struct inode *ea_inode;  in ext4_xattr_inode_lookup_create()  local
1515 	ea_inode = ext4_xattr_inode_cache_find(inode, value, value_len, hash);  in ext4_xattr_inode_lookup_create()
1516 	if (ea_inode) {  in ext4_xattr_inode_lookup_create()
1517 		err = ext4_xattr_inode_inc_ref(handle, ea_inode);  in ext4_xattr_inode_lookup_create()
1519 			iput(ea_inode);  in ext4_xattr_inode_lookup_create()
1523 		*ret_inode = ea_inode;  in ext4_xattr_inode_lookup_create()
1528 	ea_inode = ext4_xattr_inode_create(handle, inode, hash);  in ext4_xattr_inode_lookup_create()
1529 	if (IS_ERR(ea_inode))  in ext4_xattr_inode_lookup_create()
1530 		return PTR_ERR(ea_inode);  in ext4_xattr_inode_lookup_create()
1532 	err = ext4_xattr_inode_write(handle, ea_inode, value, value_len);  in ext4_xattr_inode_lookup_create()
1534 		ext4_xattr_inode_dec_ref(handle, ea_inode);  in ext4_xattr_inode_lookup_create()
1535 		iput(ea_inode);  in ext4_xattr_inode_lookup_create()
1541 				      ea_inode->i_ino, true /* reusable */);  in ext4_xattr_inode_lookup_create()
1543 	*ret_inode = ea_inode;  in ext4_xattr_inode_lookup_create()
1853 	struct inode *ea_inode = NULL, *tmp_inode;  in ext4_xattr_block_set()  local
1968 					      &ea_inode);  in ext4_xattr_block_set()
1970 			ea_inode = NULL;  in ext4_xattr_block_set()
2088 			if (ea_inode) {  in ext4_xattr_block_set()
2091 								 ea_inode);  in ext4_xattr_block_set()
2093 					ext4_warning_inode(ea_inode,  in ext4_xattr_block_set()
2096 				iput(ea_inode);  in ext4_xattr_block_set()
2097 				ea_inode = NULL;  in ext4_xattr_block_set()
2138 	if (ea_inode) {  in ext4_xattr_block_set()
2141 		error2 = ext4_xattr_inode_dec_ref(handle, ea_inode);  in ext4_xattr_block_set()
2143 			ext4_warning_inode(ea_inode, "dec ref error=%d",  in ext4_xattr_block_set()
2148 			ext4_xattr_inode_free_quota(inode, ea_inode,  in ext4_xattr_block_set()
2149 						    i_size_read(ea_inode));  in ext4_xattr_block_set()
2150 		iput(ea_inode);  in ext4_xattr_block_set()
2839 	struct inode *ea_inode;  in ext4_xattr_delete_inode()  local
2900 					      &ea_inode);  in ext4_xattr_delete_inode()
2903 				ext4_xattr_inode_free_quota(inode, ea_inode,  in ext4_xattr_delete_inode()
2905 				iput(ea_inode);  in ext4_xattr_delete_inode()