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We got issue as follows: [home]# mount /dev/sda test EXT4-fs (sda): warning: mounting fs with errors, running e2fsck is recommended [home]# dmesg EXT4-fs (sda): warning: mounting fs with errors, running e2fsck is recommended EXT4-fs (sda): Errors on filesystem, clearing orphan list. EXT4-fs (sda): recovery complete EXT4-fs (sda): mounted filesystem with ordered data mode. Quota mode: none. [home]# debugfs /dev/sda debugfs 1.46.5 (30-Dec-2021) Checksum errors in superblock! Retrying... Reason is ext4_orphan_cleanup will reset ‘s_last_orphan’ but not update super block checksum. To solve above issue, defer update super block checksum after ext4_orphan_cleanup. Signed-off-by: Ye Bin <yebin10@huawei.com> Cc: stable@kernel.org Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com> Link: https://lore.kernel.org/r/20220525012904.1604737-1-yebin10@huawei.com Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.