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()
455 ext4_xattr_inode_verify_hashes(struct inode *ea_inode,  in ext4_xattr_inode_verify_hashes()  argument
462 	hash = ext4_xattr_inode_hash(EXT4_SB(ea_inode->i_sb), buffer, size);  in ext4_xattr_inode_verify_hashes()
463 	if (hash != ext4_xattr_inode_get_hash(ea_inode))  in ext4_xattr_inode_verify_hashes()
487 	struct inode *ea_inode;  in ext4_xattr_inode_get()  local
491 				    le32_to_cpu(entry->e_hash), &ea_inode);  in ext4_xattr_inode_get()
493 		ea_inode = NULL;  in ext4_xattr_inode_get()
497 	if (i_size_read(ea_inode) != size) {  in ext4_xattr_inode_get()
498 		ext4_warning_inode(ea_inode,  in ext4_xattr_inode_get()
500 				   i_size_read(ea_inode), size);  in ext4_xattr_inode_get()
505 	err = ext4_xattr_inode_read(ea_inode, buffer, size);  in ext4_xattr_inode_get()
509 	if (!ext4_test_inode_state(ea_inode, EXT4_STATE_LUSTRE_EA_INODE)) {  in ext4_xattr_inode_get()
510 		err = ext4_xattr_inode_verify_hashes(ea_inode, entry, buffer,  in ext4_xattr_inode_get()
513 			ext4_warning_inode(ea_inode,  in ext4_xattr_inode_get()
520 					ext4_xattr_inode_get_hash(ea_inode),  in ext4_xattr_inode_get()
521 					ea_inode->i_ino, true /* reusable */);  in ext4_xattr_inode_get()
524 	iput(ea_inode);  in ext4_xattr_inode_get()
898 					struct inode *ea_inode,  in ext4_xattr_inode_free_quota()  argument
901 	if (ea_inode &&  in ext4_xattr_inode_free_quota()
902 	    ext4_test_inode_state(ea_inode, EXT4_STATE_LUSTRE_EA_INODE))  in ext4_xattr_inode_free_quota()
991 static int ext4_xattr_inode_update_ref(handle_t *handle, struct inode *ea_inode,  in ext4_xattr_inode_update_ref()  argument
998 	inode_lock(ea_inode);  in ext4_xattr_inode_update_ref()
1000 	ret = ext4_reserve_inode_write(handle, ea_inode, &iloc);  in ext4_xattr_inode_update_ref()
1004 	ref_count = ext4_xattr_inode_get_ref(ea_inode);  in ext4_xattr_inode_update_ref()
1006 	ext4_xattr_inode_set_ref(ea_inode, ref_count);  in ext4_xattr_inode_update_ref()
1010 			  ea_inode->i_ino, ref_count);  in ext4_xattr_inode_update_ref()
1013 			WARN_ONCE(ea_inode->i_nlink, "EA inode %lu i_nlink=%u",  in ext4_xattr_inode_update_ref()
1014 				  ea_inode->i_ino, ea_inode->i_nlink);  in ext4_xattr_inode_update_ref()
1016 			set_nlink(ea_inode, 1);  in ext4_xattr_inode_update_ref()
1017 			ext4_orphan_del(handle, ea_inode);  in ext4_xattr_inode_update_ref()
1021 			  ea_inode->i_ino, ref_count);  in ext4_xattr_inode_update_ref()
1024 			WARN_ONCE(ea_inode->i_nlink != 1,  in ext4_xattr_inode_update_ref()
1026 				  ea_inode->i_ino, ea_inode->i_nlink);  in ext4_xattr_inode_update_ref()
1028 			clear_nlink(ea_inode);  in ext4_xattr_inode_update_ref()
1029 			ext4_orphan_add(handle, ea_inode);  in ext4_xattr_inode_update_ref()
1033 	ret = ext4_mark_iloc_dirty(handle, ea_inode, &iloc);  in ext4_xattr_inode_update_ref()
1035 		ext4_warning_inode(ea_inode,  in ext4_xattr_inode_update_ref()
1038 	inode_unlock(ea_inode);  in ext4_xattr_inode_update_ref()
1042 static int ext4_xattr_inode_inc_ref(handle_t *handle, struct inode *ea_inode)  in ext4_xattr_inode_inc_ref()  argument
1044 	return ext4_xattr_inode_update_ref(handle, ea_inode, 1);  in ext4_xattr_inode_inc_ref()
1047 static int ext4_xattr_inode_dec_ref(handle_t *handle, struct inode *ea_inode)  in ext4_xattr_inode_dec_ref()  argument
1049 	return ext4_xattr_inode_update_ref(handle, ea_inode, -1);  in ext4_xattr_inode_dec_ref()
1055 	struct inode *ea_inode;  in ext4_xattr_inode_inc_ref_all()  local
1068 					    &ea_inode);  in ext4_xattr_inode_inc_ref_all()
1071 		err = ext4_xattr_inode_inc_ref(handle, ea_inode);  in ext4_xattr_inode_inc_ref_all()
1073 			ext4_warning_inode(ea_inode, "inc ref error %d", err);  in ext4_xattr_inode_inc_ref_all()
1074 			iput(ea_inode);  in ext4_xattr_inode_inc_ref_all()
1077 		iput(ea_inode);  in ext4_xattr_inode_inc_ref_all()
1092 					    &ea_inode);  in ext4_xattr_inode_inc_ref_all()
1099 		err = ext4_xattr_inode_dec_ref(handle, ea_inode);  in ext4_xattr_inode_inc_ref_all()
1101 			ext4_warning_inode(ea_inode, "cleanup dec ref error %d",  in ext4_xattr_inode_inc_ref_all()
1103 		iput(ea_inode);  in ext4_xattr_inode_inc_ref_all()
1133 	struct inode *ea_inode;  in ext4_xattr_inode_dec_ref_all()  local
1150 					    &ea_inode);  in ext4_xattr_inode_dec_ref_all()
1154 		err = ext4_expand_inode_array(ea_inode_array, ea_inode);  in ext4_xattr_inode_dec_ref_all()
1156 			ext4_warning_inode(ea_inode,  in ext4_xattr_inode_dec_ref_all()
1158 			iput(ea_inode);  in ext4_xattr_inode_dec_ref_all()
1167 			ext4_warning_inode(ea_inode, "Ensure credits err=%d",  in ext4_xattr_inode_dec_ref_all()
1175 				ext4_warning_inode(ea_inode,  in ext4_xattr_inode_dec_ref_all()
1182 		err = ext4_xattr_inode_dec_ref(handle, ea_inode);  in ext4_xattr_inode_dec_ref_all()
1184 			ext4_warning_inode(ea_inode, "ea_inode dec ref err=%d",  in ext4_xattr_inode_dec_ref_all()
1190 			ext4_xattr_inode_free_quota(parent, ea_inode,  in ext4_xattr_inode_dec_ref_all()
1339 static int ext4_xattr_inode_write(handle_t *handle, struct inode *ea_inode,  in ext4_xattr_inode_write()  argument
1344 	int blocksize = ea_inode->i_sb->s_blocksize;  in ext4_xattr_inode_write()
1345 	int max_blocks = (bufsize + blocksize - 1) >> ea_inode->i_blkbits;  in ext4_xattr_inode_write()
1356 		ret = ext4_map_blocks(handle, ea_inode, &map,  in ext4_xattr_inode_write()
1359 			ext4_mark_inode_dirty(handle, ea_inode);  in ext4_xattr_inode_write()
1361 			    ext4_should_retry_alloc(ea_inode->i_sb, &retries)) {  in ext4_xattr_inode_write()
1377 		bh = ext4_getblk(handle, ea_inode, block, 0);  in ext4_xattr_inode_write()
1382 			EXT4_ERROR_INODE(ea_inode,  in ext4_xattr_inode_write()
1386 		ret = ext4_journal_get_write_access(handle, ea_inode->i_sb, bh,  in ext4_xattr_inode_write()
1393 		ext4_handle_dirty_metadata(handle, ea_inode, bh);  in ext4_xattr_inode_write()
1400 	inode_lock(ea_inode);  in ext4_xattr_inode_write()
1401 	i_size_write(ea_inode, wsize);  in ext4_xattr_inode_write()
1402 	ext4_update_i_disksize(ea_inode, wsize);  in ext4_xattr_inode_write()
1403 	inode_unlock(ea_inode);  in ext4_xattr_inode_write()
1405 	ret2 = ext4_mark_inode_dirty(handle, ea_inode);  in ext4_xattr_inode_write()
1421 	struct inode *ea_inode = NULL;  in ext4_xattr_inode_create()  local
1429 	ea_inode = ext4_new_inode(handle, inode->i_sb->s_root->d_inode,  in ext4_xattr_inode_create()
1432 	if (!IS_ERR(ea_inode)) {  in ext4_xattr_inode_create()
1433 		ea_inode->i_op = &ext4_file_inode_operations;  in ext4_xattr_inode_create()
1434 		ea_inode->i_fop = &ext4_file_operations;  in ext4_xattr_inode_create()
1435 		ext4_set_aops(ea_inode);  in ext4_xattr_inode_create()
1436 		ext4_xattr_inode_set_class(ea_inode);  in ext4_xattr_inode_create()
1437 		unlock_new_inode(ea_inode);  in ext4_xattr_inode_create()
1438 		ext4_xattr_inode_set_ref(ea_inode, 1);  in ext4_xattr_inode_create()
1439 		ext4_xattr_inode_set_hash(ea_inode, hash);  in ext4_xattr_inode_create()
1440 		err = ext4_mark_inode_dirty(handle, ea_inode);  in ext4_xattr_inode_create()
1442 			err = ext4_inode_attach_jinode(ea_inode);  in ext4_xattr_inode_create()
1444 			iput(ea_inode);  in ext4_xattr_inode_create()
1452 		dquot_free_inode(ea_inode);  in ext4_xattr_inode_create()
1453 		dquot_drop(ea_inode);  in ext4_xattr_inode_create()
1454 		inode_lock(ea_inode);  in ext4_xattr_inode_create()
1455 		ea_inode->i_flags |= S_NOQUOTA;  in ext4_xattr_inode_create()
1456 		inode_unlock(ea_inode);  in ext4_xattr_inode_create()
1459 	return ea_inode;  in ext4_xattr_inode_create()
1466 	struct inode *ea_inode;  in ext4_xattr_inode_cache_find()  local
1488 		ea_inode = ext4_iget(inode->i_sb, ce->e_value,  in ext4_xattr_inode_cache_find()
1490 		if (!IS_ERR(ea_inode) &&  in ext4_xattr_inode_cache_find()
1491 		    !is_bad_inode(ea_inode) &&  in ext4_xattr_inode_cache_find()
1492 		    (EXT4_I(ea_inode)->i_flags & EXT4_EA_INODE_FL) &&  in ext4_xattr_inode_cache_find()
1493 		    i_size_read(ea_inode) == value_len &&  in ext4_xattr_inode_cache_find()
1494 		    !ext4_xattr_inode_read(ea_inode, ea_data, value_len) &&  in ext4_xattr_inode_cache_find()
1495 		    !ext4_xattr_inode_verify_hashes(ea_inode, NULL, ea_data,  in ext4_xattr_inode_cache_find()
1501 			return ea_inode;  in ext4_xattr_inode_cache_find()
1504 		if (!IS_ERR(ea_inode))  in ext4_xattr_inode_cache_find()
1505 			iput(ea_inode);  in ext4_xattr_inode_cache_find()
1519 	struct inode *ea_inode;  in ext4_xattr_inode_lookup_create()  local
1524 	ea_inode = ext4_xattr_inode_cache_find(inode, value, value_len, hash);  in ext4_xattr_inode_lookup_create()
1525 	if (ea_inode) {  in ext4_xattr_inode_lookup_create()
1526 		err = ext4_xattr_inode_inc_ref(handle, ea_inode);  in ext4_xattr_inode_lookup_create()
1528 			iput(ea_inode);  in ext4_xattr_inode_lookup_create()
1532 		*ret_inode = ea_inode;  in ext4_xattr_inode_lookup_create()
1537 	ea_inode = ext4_xattr_inode_create(handle, inode, hash);  in ext4_xattr_inode_lookup_create()
1538 	if (IS_ERR(ea_inode))  in ext4_xattr_inode_lookup_create()
1539 		return PTR_ERR(ea_inode);  in ext4_xattr_inode_lookup_create()
1541 	err = ext4_xattr_inode_write(handle, ea_inode, value, value_len);  in ext4_xattr_inode_lookup_create()
1543 		ext4_xattr_inode_dec_ref(handle, ea_inode);  in ext4_xattr_inode_lookup_create()
1544 		iput(ea_inode);  in ext4_xattr_inode_lookup_create()
1550 				      ea_inode->i_ino, true /* reusable */);  in ext4_xattr_inode_lookup_create()
1552 	*ret_inode = ea_inode;  in ext4_xattr_inode_lookup_create()
1862 	struct inode *ea_inode = NULL, *tmp_inode;  in ext4_xattr_block_set()  local
1987 					      &ea_inode);  in ext4_xattr_block_set()
1989 			ea_inode = NULL;  in ext4_xattr_block_set()
2101 			if (ea_inode) {  in ext4_xattr_block_set()
2104 								 ea_inode);  in ext4_xattr_block_set()
2106 					ext4_warning_inode(ea_inode,  in ext4_xattr_block_set()
2109 				iput(ea_inode);  in ext4_xattr_block_set()
2110 				ea_inode = NULL;  in ext4_xattr_block_set()
2151 	if (ea_inode) {  in ext4_xattr_block_set()
2154 		error2 = ext4_xattr_inode_dec_ref(handle, ea_inode);  in ext4_xattr_block_set()
2156 			ext4_warning_inode(ea_inode, "dec ref error=%d",  in ext4_xattr_block_set()
2161 			ext4_xattr_inode_free_quota(inode, ea_inode,  in ext4_xattr_block_set()
2162 						    i_size_read(ea_inode));  in ext4_xattr_block_set()
2163 		iput(ea_inode);  in ext4_xattr_block_set()
2855 	struct inode *ea_inode;  in ext4_xattr_delete_inode()  local
2916 					      &ea_inode);  in ext4_xattr_delete_inode()
2919 				ext4_xattr_inode_free_quota(inode, ea_inode,  in ext4_xattr_delete_inode()
2921 				iput(ea_inode);  in ext4_xattr_delete_inode()