122 void ext4_xattr_inode_set_class(struct inode *ea_inode)  in ext4_xattr_inode_set_class()  argument
124 	struct ext4_inode_info *ei = EXT4_I(ea_inode);  in ext4_xattr_inode_set_class()
126 	lockdep_set_subclass(&ea_inode->i_rwsem, 1);  in ext4_xattr_inode_set_class()
357 static u64 ext4_xattr_inode_get_ref(struct inode *ea_inode)  in ext4_xattr_inode_get_ref()  argument
359 	return ((u64) inode_get_ctime_sec(ea_inode) << 32) |  in ext4_xattr_inode_get_ref()
360 		(u32) inode_peek_iversion_raw(ea_inode);  in ext4_xattr_inode_get_ref()
363 static void ext4_xattr_inode_set_ref(struct inode *ea_inode, u64 ref_count)  in ext4_xattr_inode_set_ref()  argument
365 	inode_set_ctime(ea_inode, (u32)(ref_count >> 32), 0);  in ext4_xattr_inode_set_ref()
366 	inode_set_iversion_raw(ea_inode, ref_count & 0xffffffff);  in ext4_xattr_inode_set_ref()
369 static u32 ext4_xattr_inode_get_hash(struct inode *ea_inode)  in ext4_xattr_inode_get_hash()  argument
371 	return (u32) inode_get_atime_sec(ea_inode);  in ext4_xattr_inode_get_hash()
374 static void ext4_xattr_inode_set_hash(struct inode *ea_inode, u32 hash)  in ext4_xattr_inode_set_hash()  argument
376 	inode_set_atime(ea_inode, hash, 0);  in ext4_xattr_inode_set_hash()
382 static int ext4_xattr_inode_read(struct inode *ea_inode, void *buf, size_t size)  in ext4_xattr_inode_read()  argument
384 	int blocksize = 1 << ea_inode->i_blkbits;  in ext4_xattr_inode_read()
385 	int bh_count = (size + blocksize - 1) >> ea_inode->i_blkbits;  in ext4_xattr_inode_read()
397 	ret = ext4_bread_batch(ea_inode, 0 /* block */, bh_count,  in ext4_xattr_inode_read()
424 				 u32 ea_inode_hash, struct inode **ea_inode)  in ext4_xattr_inode_iget()  argument
466 	*ea_inode = inode;  in ext4_xattr_inode_iget()
486 ext4_xattr_inode_verify_hashes(struct inode *ea_inode,  in ext4_xattr_inode_verify_hashes()  argument
493 	hash = ext4_xattr_inode_hash(EXT4_SB(ea_inode->i_sb), buffer, size);  in ext4_xattr_inode_verify_hashes()
494 	if (hash != ext4_xattr_inode_get_hash(ea_inode))  in ext4_xattr_inode_verify_hashes()
532 	struct inode *ea_inode;  in ext4_xattr_inode_get()  local
536 				    le32_to_cpu(entry->e_hash), &ea_inode);  in ext4_xattr_inode_get()
538 		ea_inode = NULL;  in ext4_xattr_inode_get()
542 	if (i_size_read(ea_inode) != size) {  in ext4_xattr_inode_get()
543 		ext4_warning_inode(ea_inode,  in ext4_xattr_inode_get()
545 				   i_size_read(ea_inode), size);  in ext4_xattr_inode_get()
550 	err = ext4_xattr_inode_read(ea_inode, buffer, size);  in ext4_xattr_inode_get()
554 	if (!ext4_test_inode_state(ea_inode, EXT4_STATE_LUSTRE_EA_INODE)) {  in ext4_xattr_inode_get()
555 		err = ext4_xattr_inode_verify_hashes(ea_inode, entry, buffer,  in ext4_xattr_inode_get()
558 			ext4_warning_inode(ea_inode,  in ext4_xattr_inode_get()
565 					ext4_xattr_inode_get_hash(ea_inode),  in ext4_xattr_inode_get()
566 					ea_inode->i_ino, true /* reusable */);  in ext4_xattr_inode_get()
569 	iput(ea_inode);  in ext4_xattr_inode_get()
942 					struct inode *ea_inode,  in ext4_xattr_inode_free_quota()  argument
945 	if (ea_inode &&  in ext4_xattr_inode_free_quota()
946 	    ext4_test_inode_state(ea_inode, EXT4_STATE_LUSTRE_EA_INODE))  in ext4_xattr_inode_free_quota()
1035 static int ext4_xattr_inode_update_ref(handle_t *handle, struct inode *ea_inode,  in ext4_xattr_inode_update_ref()  argument
1042 	inode_lock_nested(ea_inode, I_MUTEX_XATTR);  in ext4_xattr_inode_update_ref()
1044 	ret = ext4_reserve_inode_write(handle, ea_inode, &iloc);  in ext4_xattr_inode_update_ref()
1048 	ref_count = ext4_xattr_inode_get_ref(ea_inode);  in ext4_xattr_inode_update_ref()
1050 	ext4_xattr_inode_set_ref(ea_inode, ref_count);  in ext4_xattr_inode_update_ref()
1054 			  ea_inode->i_ino, ref_count);  in ext4_xattr_inode_update_ref()
1057 			WARN_ONCE(ea_inode->i_nlink, "EA inode %lu i_nlink=%u",  in ext4_xattr_inode_update_ref()
1058 				  ea_inode->i_ino, ea_inode->i_nlink);  in ext4_xattr_inode_update_ref()
1060 			set_nlink(ea_inode, 1);  in ext4_xattr_inode_update_ref()
1061 			ext4_orphan_del(handle, ea_inode);  in ext4_xattr_inode_update_ref()
1065 			  ea_inode->i_ino, ref_count);  in ext4_xattr_inode_update_ref()
1068 			WARN_ONCE(ea_inode->i_nlink != 1,  in ext4_xattr_inode_update_ref()
1070 				  ea_inode->i_ino, ea_inode->i_nlink);  in ext4_xattr_inode_update_ref()
1072 			clear_nlink(ea_inode);  in ext4_xattr_inode_update_ref()
1073 			ext4_orphan_add(handle, ea_inode);  in ext4_xattr_inode_update_ref()
1077 	ret = ext4_mark_iloc_dirty(handle, ea_inode, &iloc);  in ext4_xattr_inode_update_ref()
1079 		ext4_warning_inode(ea_inode,  in ext4_xattr_inode_update_ref()
1082 	inode_unlock(ea_inode);  in ext4_xattr_inode_update_ref()
1086 static int ext4_xattr_inode_inc_ref(handle_t *handle, struct inode *ea_inode)  in ext4_xattr_inode_inc_ref()  argument
1088 	return ext4_xattr_inode_update_ref(handle, ea_inode, 1);  in ext4_xattr_inode_inc_ref()
1091 static int ext4_xattr_inode_dec_ref(handle_t *handle, struct inode *ea_inode)  in ext4_xattr_inode_dec_ref()  argument
1093 	return ext4_xattr_inode_update_ref(handle, ea_inode, -1);  in ext4_xattr_inode_dec_ref()
1099 	struct inode *ea_inode;  in ext4_xattr_inode_inc_ref_all()  local
1112 					    &ea_inode);  in ext4_xattr_inode_inc_ref_all()
1115 		err = ext4_xattr_inode_inc_ref(handle, ea_inode);  in ext4_xattr_inode_inc_ref_all()
1117 			ext4_warning_inode(ea_inode, "inc ref error %d", err);  in ext4_xattr_inode_inc_ref_all()
1118 			iput(ea_inode);  in ext4_xattr_inode_inc_ref_all()
1121 		iput(ea_inode);  in ext4_xattr_inode_inc_ref_all()
1136 					    &ea_inode);  in ext4_xattr_inode_inc_ref_all()
1143 		err = ext4_xattr_inode_dec_ref(handle, ea_inode);  in ext4_xattr_inode_inc_ref_all()
1145 			ext4_warning_inode(ea_inode, "cleanup dec ref error %d",  in ext4_xattr_inode_inc_ref_all()
1147 		iput(ea_inode);  in ext4_xattr_inode_inc_ref_all()
1177 	struct inode *ea_inode;  in ext4_xattr_inode_dec_ref_all()  local
1194 					    &ea_inode);  in ext4_xattr_inode_dec_ref_all()
1198 		err = ext4_expand_inode_array(ea_inode_array, ea_inode);  in ext4_xattr_inode_dec_ref_all()
1200 			ext4_warning_inode(ea_inode,  in ext4_xattr_inode_dec_ref_all()
1202 			iput(ea_inode);  in ext4_xattr_inode_dec_ref_all()
1211 			ext4_warning_inode(ea_inode, "Ensure credits err=%d",  in ext4_xattr_inode_dec_ref_all()
1219 				ext4_warning_inode(ea_inode,  in ext4_xattr_inode_dec_ref_all()
1226 		err = ext4_xattr_inode_dec_ref(handle, ea_inode);  in ext4_xattr_inode_dec_ref_all()
1228 			ext4_warning_inode(ea_inode, "ea_inode dec ref err=%d",  in ext4_xattr_inode_dec_ref_all()
1234 			ext4_xattr_inode_free_quota(parent, ea_inode,  in ext4_xattr_inode_dec_ref_all()
1383 static int ext4_xattr_inode_write(handle_t *handle, struct inode *ea_inode,  in ext4_xattr_inode_write()  argument
1388 	int blocksize = ea_inode->i_sb->s_blocksize;  in ext4_xattr_inode_write()
1389 	int max_blocks = (bufsize + blocksize - 1) >> ea_inode->i_blkbits;  in ext4_xattr_inode_write()
1400 		ret = ext4_map_blocks(handle, ea_inode, &map,  in ext4_xattr_inode_write()
1403 			ext4_mark_inode_dirty(handle, ea_inode);  in ext4_xattr_inode_write()
1405 			    ext4_should_retry_alloc(ea_inode->i_sb, &retries)) {  in ext4_xattr_inode_write()
1421 		bh = ext4_getblk(handle, ea_inode, block, 0);  in ext4_xattr_inode_write()
1426 			EXT4_ERROR_INODE(ea_inode,  in ext4_xattr_inode_write()
1430 		ret = ext4_journal_get_write_access(handle, ea_inode->i_sb, bh,  in ext4_xattr_inode_write()
1443 		ext4_handle_dirty_metadata(handle, ea_inode, bh);  in ext4_xattr_inode_write()
1450 	inode_lock(ea_inode);  in ext4_xattr_inode_write()
1451 	i_size_write(ea_inode, wsize);  in ext4_xattr_inode_write()
1452 	ext4_update_i_disksize(ea_inode, wsize);  in ext4_xattr_inode_write()
1453 	inode_unlock(ea_inode);  in ext4_xattr_inode_write()
1455 	ret2 = ext4_mark_inode_dirty(handle, ea_inode);  in ext4_xattr_inode_write()
1471 	struct inode *ea_inode = NULL;  in ext4_xattr_inode_create()  local
1486 	ea_inode = ext4_new_inode(handle, inode->i_sb->s_root->d_inode,  in ext4_xattr_inode_create()
1489 	if (!IS_ERR(ea_inode)) {  in ext4_xattr_inode_create()
1490 		ea_inode->i_op = &ext4_file_inode_operations;  in ext4_xattr_inode_create()
1491 		ea_inode->i_fop = &ext4_file_operations;  in ext4_xattr_inode_create()
1492 		ext4_set_aops(ea_inode);  in ext4_xattr_inode_create()
1493 		ext4_xattr_inode_set_class(ea_inode);  in ext4_xattr_inode_create()
1494 		unlock_new_inode(ea_inode);  in ext4_xattr_inode_create()
1495 		ext4_xattr_inode_set_ref(ea_inode, 1);  in ext4_xattr_inode_create()
1496 		ext4_xattr_inode_set_hash(ea_inode, hash);  in ext4_xattr_inode_create()
1497 		err = ext4_mark_inode_dirty(handle, ea_inode);  in ext4_xattr_inode_create()
1499 			err = ext4_inode_attach_jinode(ea_inode);  in ext4_xattr_inode_create()
1501 			if (ext4_xattr_inode_dec_ref(handle, ea_inode))  in ext4_xattr_inode_create()
1502 				ext4_warning_inode(ea_inode,  in ext4_xattr_inode_create()
1504 			iput(ea_inode);  in ext4_xattr_inode_create()
1512 		dquot_free_inode(ea_inode);  in ext4_xattr_inode_create()
1513 		dquot_drop(ea_inode);  in ext4_xattr_inode_create()
1514 		inode_lock(ea_inode);  in ext4_xattr_inode_create()
1515 		ea_inode->i_flags |= S_NOQUOTA;  in ext4_xattr_inode_create()
1516 		inode_unlock(ea_inode);  in ext4_xattr_inode_create()
1519 	return ea_inode;  in ext4_xattr_inode_create()
1526 	struct inode *ea_inode;  in ext4_xattr_inode_cache_find()  local
1548 		ea_inode = ext4_iget(inode->i_sb, ce->e_value,  in ext4_xattr_inode_cache_find()
1550 		if (IS_ERR(ea_inode))  in ext4_xattr_inode_cache_find()
1552 		ext4_xattr_inode_set_class(ea_inode);  in ext4_xattr_inode_cache_find()
1553 		if (i_size_read(ea_inode) == value_len &&  in ext4_xattr_inode_cache_find()
1554 		    !ext4_xattr_inode_read(ea_inode, ea_data, value_len) &&  in ext4_xattr_inode_cache_find()
1555 		    !ext4_xattr_inode_verify_hashes(ea_inode, NULL, ea_data,  in ext4_xattr_inode_cache_find()
1561 			return ea_inode;  in ext4_xattr_inode_cache_find()
1563 		iput(ea_inode);  in ext4_xattr_inode_cache_find()
1577 	struct inode *ea_inode;  in ext4_xattr_inode_lookup_create()  local
1587 	ea_inode = ext4_xattr_inode_cache_find(inode, value, value_len, hash);  in ext4_xattr_inode_lookup_create()
1588 	if (ea_inode) {  in ext4_xattr_inode_lookup_create()
1589 		err = ext4_xattr_inode_inc_ref(handle, ea_inode);  in ext4_xattr_inode_lookup_create()
1592 		return ea_inode;  in ext4_xattr_inode_lookup_create()
1596 	ea_inode = ext4_xattr_inode_create(handle, inode, hash);  in ext4_xattr_inode_lookup_create()
1597 	if (IS_ERR(ea_inode)) {  in ext4_xattr_inode_lookup_create()
1599 		return ea_inode;  in ext4_xattr_inode_lookup_create()
1602 	err = ext4_xattr_inode_write(handle, ea_inode, value, value_len);  in ext4_xattr_inode_lookup_create()
1604 		if (ext4_xattr_inode_dec_ref(handle, ea_inode))  in ext4_xattr_inode_lookup_create()
1605 			ext4_warning_inode(ea_inode, "cleanup dec ref error %d", err);  in ext4_xattr_inode_lookup_create()
1611 				      ea_inode->i_ino, true /* reusable */);  in ext4_xattr_inode_lookup_create()
1612 	return ea_inode;  in ext4_xattr_inode_lookup_create()
1614 	iput(ea_inode);  in ext4_xattr_inode_lookup_create()
1906 	struct inode *ea_inode = NULL, *tmp_inode;  in ext4_xattr_block_set()  local
1916 		ea_inode = ext4_xattr_inode_lookup_create(handle, inode,  in ext4_xattr_block_set()
1918 		if (IS_ERR(ea_inode)) {  in ext4_xattr_block_set()
1919 			error = PTR_ERR(ea_inode);  in ext4_xattr_block_set()
1920 			ea_inode = NULL;  in ext4_xattr_block_set()
1960 					     ea_inode, true /* is_block */);  in ext4_xattr_block_set()
2028 	error = ext4_xattr_set_entry(i, s, handle, inode, ea_inode,  in ext4_xattr_block_set()
2141 			if (ea_inode) {  in ext4_xattr_block_set()
2144 								 ea_inode);  in ext4_xattr_block_set()
2146 					ext4_warning_inode(ea_inode,  in ext4_xattr_block_set()
2149 				iput(ea_inode);  in ext4_xattr_block_set()
2150 				ea_inode = NULL;  in ext4_xattr_block_set()
2191 	if (ea_inode) {  in ext4_xattr_block_set()
2195 			error2 = ext4_xattr_inode_dec_ref(handle, ea_inode);  in ext4_xattr_block_set()
2197 				ext4_warning_inode(ea_inode, "dec ref error=%d",  in ext4_xattr_block_set()
2199 			ext4_xattr_inode_free_quota(inode, ea_inode,  in ext4_xattr_block_set()
2200 						    i_size_read(ea_inode));  in ext4_xattr_block_set()
2202 		iput(ea_inode);  in ext4_xattr_block_set()
2259 	struct inode *ea_inode = NULL;  in ext4_xattr_ibody_set()  local
2269 		ea_inode = ext4_xattr_inode_lookup_create(handle, inode,  in ext4_xattr_ibody_set()
2271 		if (IS_ERR(ea_inode))  in ext4_xattr_ibody_set()
2272 			return PTR_ERR(ea_inode);  in ext4_xattr_ibody_set()
2274 	error = ext4_xattr_set_entry(i, s, handle, inode, ea_inode,  in ext4_xattr_ibody_set()
2277 		if (ea_inode) {  in ext4_xattr_ibody_set()
2280 			error2 = ext4_xattr_inode_dec_ref(handle, ea_inode);  in ext4_xattr_ibody_set()
2282 				ext4_warning_inode(ea_inode, "dec ref error=%d",  in ext4_xattr_ibody_set()
2285 			ext4_xattr_inode_free_quota(inode, ea_inode,  in ext4_xattr_ibody_set()
2286 						    i_size_read(ea_inode));  in ext4_xattr_ibody_set()
2287 			iput(ea_inode);  in ext4_xattr_ibody_set()
2299 	iput(ea_inode);  in ext4_xattr_ibody_set()
2928 	struct inode *ea_inode;  in ext4_xattr_delete_inode()  local
2989 					      &ea_inode);  in ext4_xattr_delete_inode()
2992 				ext4_xattr_inode_free_quota(inode, ea_inode,  in ext4_xattr_delete_inode()
2994 				iput(ea_inode);  in ext4_xattr_delete_inode()