122 void ext4_xattr_inode_set_class(struct inode *ea_inode)  in ext4_xattr_inode_set_class()  argument
124 	lockdep_set_subclass(&ea_inode->i_rwsem, 1);  in ext4_xattr_inode_set_class()
315 static u64 ext4_xattr_inode_get_ref(struct inode *ea_inode)  in ext4_xattr_inode_get_ref()  argument
317 	return ((u64)ea_inode->i_ctime.tv_sec << 32) |  in ext4_xattr_inode_get_ref()
318 		(u32) inode_peek_iversion_raw(ea_inode);  in ext4_xattr_inode_get_ref()
321 static void ext4_xattr_inode_set_ref(struct inode *ea_inode, u64 ref_count)  in ext4_xattr_inode_set_ref()  argument
323 	ea_inode->i_ctime.tv_sec = (u32)(ref_count >> 32);  in ext4_xattr_inode_set_ref()
324 	inode_set_iversion_raw(ea_inode, ref_count & 0xffffffff);  in ext4_xattr_inode_set_ref()
327 static u32 ext4_xattr_inode_get_hash(struct inode *ea_inode)  in ext4_xattr_inode_get_hash()  argument
329 	return (u32)ea_inode->i_atime.tv_sec;  in ext4_xattr_inode_get_hash()
332 static void ext4_xattr_inode_set_hash(struct inode *ea_inode, u32 hash)  in ext4_xattr_inode_set_hash()  argument
334 	ea_inode->i_atime.tv_sec = hash;  in ext4_xattr_inode_set_hash()
340 static int ext4_xattr_inode_read(struct inode *ea_inode, void *buf, size_t size)  in ext4_xattr_inode_read()  argument
342 	int blocksize = 1 << ea_inode->i_blkbits;  in ext4_xattr_inode_read()
343 	int bh_count = (size + blocksize - 1) >> ea_inode->i_blkbits;  in ext4_xattr_inode_read()
355 	ret = ext4_bread_batch(ea_inode, 0 /* block */, bh_count,  in ext4_xattr_inode_read()
382 				 u32 ea_inode_hash, struct inode **ea_inode)  in ext4_xattr_inode_iget()  argument
430 	*ea_inode = inode;  in ext4_xattr_inode_iget()
438 ext4_xattr_inode_verify_hashes(struct inode *ea_inode,  in ext4_xattr_inode_verify_hashes()  argument
445 	hash = ext4_xattr_inode_hash(EXT4_SB(ea_inode->i_sb), buffer, size);  in ext4_xattr_inode_verify_hashes()
446 	if (hash != ext4_xattr_inode_get_hash(ea_inode))  in ext4_xattr_inode_verify_hashes()
470 	struct inode *ea_inode;  in ext4_xattr_inode_get()  local
474 				    le32_to_cpu(entry->e_hash), &ea_inode);  in ext4_xattr_inode_get()
476 		ea_inode = NULL;  in ext4_xattr_inode_get()
480 	if (i_size_read(ea_inode) != size) {  in ext4_xattr_inode_get()
481 		ext4_warning_inode(ea_inode,  in ext4_xattr_inode_get()
483 				   i_size_read(ea_inode), size);  in ext4_xattr_inode_get()
488 	err = ext4_xattr_inode_read(ea_inode, buffer, size);  in ext4_xattr_inode_get()
492 	if (!ext4_test_inode_state(ea_inode, EXT4_STATE_LUSTRE_EA_INODE)) {  in ext4_xattr_inode_get()
493 		err = ext4_xattr_inode_verify_hashes(ea_inode, entry, buffer,  in ext4_xattr_inode_get()
496 			ext4_warning_inode(ea_inode,  in ext4_xattr_inode_get()
503 					ext4_xattr_inode_get_hash(ea_inode),  in ext4_xattr_inode_get()
504 					ea_inode->i_ino, true /* reusable */);  in ext4_xattr_inode_get()
507 	iput(ea_inode);  in ext4_xattr_inode_get()
877 					struct inode *ea_inode,  in ext4_xattr_inode_free_quota()  argument
880 	if (ea_inode &&  in ext4_xattr_inode_free_quota()
881 	    ext4_test_inode_state(ea_inode, EXT4_STATE_LUSTRE_EA_INODE))  in ext4_xattr_inode_free_quota()
1019 static int ext4_xattr_inode_update_ref(handle_t *handle, struct inode *ea_inode,  in ext4_xattr_inode_update_ref()  argument
1022 	struct mb_cache *ea_inode_cache = EA_INODE_CACHE(ea_inode);  in ext4_xattr_inode_update_ref()
1028 	inode_lock(ea_inode);  in ext4_xattr_inode_update_ref()
1030 	ret = ext4_reserve_inode_write(handle, ea_inode, &iloc);  in ext4_xattr_inode_update_ref()
1034 	ref_count = ext4_xattr_inode_get_ref(ea_inode);  in ext4_xattr_inode_update_ref()
1036 	ext4_xattr_inode_set_ref(ea_inode, ref_count);  in ext4_xattr_inode_update_ref()
1040 			  ea_inode->i_ino, ref_count);  in ext4_xattr_inode_update_ref()
1043 			WARN_ONCE(ea_inode->i_nlink, "EA inode %lu i_nlink=%u",  in ext4_xattr_inode_update_ref()
1044 				  ea_inode->i_ino, ea_inode->i_nlink);  in ext4_xattr_inode_update_ref()
1046 			set_nlink(ea_inode, 1);  in ext4_xattr_inode_update_ref()
1047 			ext4_orphan_del(handle, ea_inode);  in ext4_xattr_inode_update_ref()
1050 				hash = ext4_xattr_inode_get_hash(ea_inode);  in ext4_xattr_inode_update_ref()
1053 						      ea_inode->i_ino,  in ext4_xattr_inode_update_ref()
1059 			  ea_inode->i_ino, ref_count);  in ext4_xattr_inode_update_ref()
1062 			WARN_ONCE(ea_inode->i_nlink != 1,  in ext4_xattr_inode_update_ref()
1064 				  ea_inode->i_ino, ea_inode->i_nlink);  in ext4_xattr_inode_update_ref()
1066 			clear_nlink(ea_inode);  in ext4_xattr_inode_update_ref()
1067 			ext4_orphan_add(handle, ea_inode);  in ext4_xattr_inode_update_ref()
1070 				hash = ext4_xattr_inode_get_hash(ea_inode);  in ext4_xattr_inode_update_ref()
1072 						      ea_inode->i_ino);  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()
1159 	struct inode *ea_inode;  in ext4_xattr_inode_dec_ref_all()  local
1176 					    &ea_inode);  in ext4_xattr_inode_dec_ref_all()
1180 		err = ext4_expand_inode_array(ea_inode_array, ea_inode);  in ext4_xattr_inode_dec_ref_all()
1182 			ext4_warning_inode(ea_inode,  in ext4_xattr_inode_dec_ref_all()
1184 			iput(ea_inode);  in ext4_xattr_inode_dec_ref_all()
1191 			ext4_warning_inode(ea_inode, "Ensure credits err=%d",  in ext4_xattr_inode_dec_ref_all()
1196 		err = ext4_xattr_inode_dec_ref(handle, ea_inode);  in ext4_xattr_inode_dec_ref_all()
1198 			ext4_warning_inode(ea_inode, "ea_inode dec ref err=%d",  in ext4_xattr_inode_dec_ref_all()
1204 			ext4_xattr_inode_free_quota(parent, ea_inode,  in ext4_xattr_inode_dec_ref_all()
1342 static int ext4_xattr_inode_write(handle_t *handle, struct inode *ea_inode,  in ext4_xattr_inode_write()  argument
1347 	int blocksize = ea_inode->i_sb->s_blocksize;  in ext4_xattr_inode_write()
1348 	int max_blocks = (bufsize + blocksize - 1) >> ea_inode->i_blkbits;  in ext4_xattr_inode_write()
1359 		ret = ext4_map_blocks(handle, ea_inode, &map,  in ext4_xattr_inode_write()
1362 			ext4_mark_inode_dirty(handle, ea_inode);  in ext4_xattr_inode_write()
1364 			    ext4_should_retry_alloc(ea_inode->i_sb, &retries)) {  in ext4_xattr_inode_write()
1381 		bh = ext4_getblk(handle, ea_inode, block, 0);  in ext4_xattr_inode_write()
1386 			EXT4_ERROR_INODE(ea_inode,  in ext4_xattr_inode_write()
1396 		ext4_handle_dirty_metadata(handle, ea_inode, bh);  in ext4_xattr_inode_write()
1403 	inode_lock(ea_inode);  in ext4_xattr_inode_write()
1404 	i_size_write(ea_inode, wsize);  in ext4_xattr_inode_write()
1405 	ext4_update_i_disksize(ea_inode, wsize);  in ext4_xattr_inode_write()
1406 	inode_unlock(ea_inode);  in ext4_xattr_inode_write()
1408 	ext4_mark_inode_dirty(handle, ea_inode);  in ext4_xattr_inode_write()
1422 	struct inode *ea_inode = NULL;  in ext4_xattr_inode_create()  local
1430 	ea_inode = ext4_new_inode(handle, inode->i_sb->s_root->d_inode,  in ext4_xattr_inode_create()
1433 	if (!IS_ERR(ea_inode)) {  in ext4_xattr_inode_create()
1434 		ea_inode->i_op = &ext4_file_inode_operations;  in ext4_xattr_inode_create()
1435 		ea_inode->i_fop = &ext4_file_operations;  in ext4_xattr_inode_create()
1436 		ext4_set_aops(ea_inode);  in ext4_xattr_inode_create()
1437 		ext4_xattr_inode_set_class(ea_inode);  in ext4_xattr_inode_create()
1438 		unlock_new_inode(ea_inode);  in ext4_xattr_inode_create()
1439 		ext4_xattr_inode_set_ref(ea_inode, 1);  in ext4_xattr_inode_create()
1440 		ext4_xattr_inode_set_hash(ea_inode, hash);  in ext4_xattr_inode_create()
1441 		err = ext4_mark_inode_dirty(handle, ea_inode);  in ext4_xattr_inode_create()
1443 			err = ext4_inode_attach_jinode(ea_inode);  in ext4_xattr_inode_create()
1445 			iput(ea_inode);  in ext4_xattr_inode_create()
1453 		dquot_free_inode(ea_inode);  in ext4_xattr_inode_create()
1454 		dquot_drop(ea_inode);  in ext4_xattr_inode_create()
1455 		inode_lock(ea_inode);  in ext4_xattr_inode_create()
1456 		ea_inode->i_flags |= S_NOQUOTA;  in ext4_xattr_inode_create()
1457 		inode_unlock(ea_inode);  in ext4_xattr_inode_create()
1460 	return ea_inode;  in ext4_xattr_inode_create()
1467 	struct inode *ea_inode;  in ext4_xattr_inode_cache_find()  local
1486 		ea_inode = ext4_iget(inode->i_sb, ce->e_value,  in ext4_xattr_inode_cache_find()
1488 		if (!IS_ERR(ea_inode) &&  in ext4_xattr_inode_cache_find()
1489 		    !is_bad_inode(ea_inode) &&  in ext4_xattr_inode_cache_find()
1490 		    (EXT4_I(ea_inode)->i_flags & EXT4_EA_INODE_FL) &&  in ext4_xattr_inode_cache_find()
1491 		    i_size_read(ea_inode) == value_len &&  in ext4_xattr_inode_cache_find()
1492 		    !ext4_xattr_inode_read(ea_inode, ea_data, value_len) &&  in ext4_xattr_inode_cache_find()
1493 		    !ext4_xattr_inode_verify_hashes(ea_inode, NULL, ea_data,  in ext4_xattr_inode_cache_find()
1499 			return ea_inode;  in ext4_xattr_inode_cache_find()
1502 		if (!IS_ERR(ea_inode))  in ext4_xattr_inode_cache_find()
1503 			iput(ea_inode);  in ext4_xattr_inode_cache_find()
1517 	struct inode *ea_inode;  in ext4_xattr_inode_lookup_create()  local
1522 	ea_inode = ext4_xattr_inode_cache_find(inode, value, value_len, hash);  in ext4_xattr_inode_lookup_create()
1523 	if (ea_inode) {  in ext4_xattr_inode_lookup_create()
1524 		err = ext4_xattr_inode_inc_ref(handle, ea_inode);  in ext4_xattr_inode_lookup_create()
1526 			iput(ea_inode);  in ext4_xattr_inode_lookup_create()
1530 		*ret_inode = ea_inode;  in ext4_xattr_inode_lookup_create()
1535 	ea_inode = ext4_xattr_inode_create(handle, inode, hash);  in ext4_xattr_inode_lookup_create()
1536 	if (IS_ERR(ea_inode))  in ext4_xattr_inode_lookup_create()
1537 		return PTR_ERR(ea_inode);  in ext4_xattr_inode_lookup_create()
1539 	err = ext4_xattr_inode_write(handle, ea_inode, value, value_len);  in ext4_xattr_inode_lookup_create()
1541 		ext4_xattr_inode_dec_ref(handle, ea_inode);  in ext4_xattr_inode_lookup_create()
1542 		iput(ea_inode);  in ext4_xattr_inode_lookup_create()
1548 				      ea_inode->i_ino, true /* reusable */);  in ext4_xattr_inode_lookup_create()
1550 	*ret_inode = ea_inode;  in ext4_xattr_inode_lookup_create()
1857 	struct inode *ea_inode = NULL, *tmp_inode;  in ext4_xattr_block_set()  local
1972 					      &ea_inode);  in ext4_xattr_block_set()
1974 			ea_inode = NULL;  in ext4_xattr_block_set()
2091 			if (ea_inode) {  in ext4_xattr_block_set()
2094 								 ea_inode);  in ext4_xattr_block_set()
2096 					ext4_warning_inode(ea_inode,  in ext4_xattr_block_set()
2099 				iput(ea_inode);  in ext4_xattr_block_set()
2100 				ea_inode = NULL;  in ext4_xattr_block_set()
2140 	if (ea_inode) {  in ext4_xattr_block_set()
2143 		error2 = ext4_xattr_inode_dec_ref(handle, ea_inode);  in ext4_xattr_block_set()
2145 			ext4_warning_inode(ea_inode, "dec ref error=%d",  in ext4_xattr_block_set()
2150 			ext4_xattr_inode_free_quota(inode, ea_inode,  in ext4_xattr_block_set()
2151 						    i_size_read(ea_inode));  in ext4_xattr_block_set()
2152 		iput(ea_inode);  in ext4_xattr_block_set()
2862 	struct inode *ea_inode;  in ext4_xattr_delete_inode()  local
2922 					      &ea_inode);  in ext4_xattr_delete_inode()
2925 				ext4_xattr_inode_free_quota(inode, ea_inode,  in ext4_xattr_delete_inode()
2927 				iput(ea_inode);  in ext4_xattr_delete_inode()