static int do_read_inode(struct inode *inode)
{
	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
	struct f2fs_inode_info *fi = F2FS_I(inode);
	struct page *node_page;
	struct f2fs_inode *ri;
	projid_t i_projid;

	/* Check if ino is within scope */
	if (f2fs_check_nid_range(sbi, inode->i_ino))
		return -EINVAL;

	node_page = f2fs_get_node_page(sbi, inode->i_ino);
	if (IS_ERR(node_page))
		return PTR_ERR(node_page);

	ri = F2FS_INODE(node_page);

	inode->i_mode = le16_to_cpu(ri->i_mode);
	i_uid_write(inode, le32_to_cpu(ri->i_uid));
	i_gid_write(inode, le32_to_cpu(ri->i_gid));
	set_nlink(inode, le32_to_cpu(ri->i_links));
	inode->i_size = le64_to_cpu(ri->i_size);
	inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);

	inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
	inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
	inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
	inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
	inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
	inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
	inode->i_generation = le32_to_cpu(ri->i_generation);
	if (S_ISDIR(inode->i_mode))
		fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
	else if (S_ISREG(inode->i_mode))
		fi->i_gc_failures[GC_FAILURE_PIN] =
					le16_to_cpu(ri->i_gc_failures);
	fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
	fi->i_flags = le32_to_cpu(ri->i_flags);
	fi->flags = 0;
	fi->i_advise = ri->i_advise;
	fi->i_pino = le32_to_cpu(ri->i_pino);
	fi->i_dir_level = ri->i_dir_level;

	if (f2fs_init_extent_tree(inode, &ri->i_ext))
		set_page_dirty(node_page);

	get_inline_info(inode, ri);

	if (!sanity_check_inode(inode)) {
		f2fs_put_page(node_page, 1);
		return -EINVAL;
	}

	fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
					le16_to_cpu(ri->i_extra_isize) : 0;

	if (f2fs_sb_has_flexible_inline_xattr(sbi->sb)) {
		fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
	} else if (f2fs_has_inline_xattr(inode) ||
				f2fs_has_inline_dentry(inode)) {
		fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
	} else {

		/*
		 * Previous inline data or directory always reserved 200 bytes
		 * in inode layout, even if inline_xattr is disabled. In order
		 * to keep inline_dentry's structure for backward compatibility,
		 * we get the space back only from inline_data.
		 */
		fi->i_inline_xattr_size = 0;
	}

	/* check data exist */
	if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
		__recover_inline_status(inode, node_page);

	/* get rdev by using inline_info */
	__get_inode_rdev(inode, ri);

	if (__written_first_block(sbi, ri))
		set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);

	if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
		fi->last_disk_size = inode->i_size;

	if (fi->i_flags & F2FS_PROJINHERIT_FL)
		set_inode_flag(inode, FI_PROJ_INHERIT);

	if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi->sb) &&
			F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
		i_projid = (projid_t)le32_to_cpu(ri->i_projid);
	else
		i_projid = F2FS_DEF_PROJID;
	fi->i_projid = make_kprojid(&init_user_ns, i_projid);

	if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi->sb) &&
			F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
		fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
		fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
	}

	F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
	F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
	F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
	F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
	f2fs_put_page(node_page, 1);

	stat_inc_inline_xattr(inode);
	stat_inc_inline_inode(inode);
	stat_inc_inline_dir(inode);

	return 0;
}