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When ext4 is formatted with lazy_journal_init=1 and transactions from the previous filesystem are still on disk, it is possible that they are considered during a recovery after a crash. Because the checksum seed has changed, the CRC check will fail, and the journal recovery fails with checksum error although the journal is otherwise perfectly valid. Fix the problem by checking commit block time stamps to determine whether the data in the journal block is just stale or whether it is indeed corrupt. Reported-by: kernel test robot <lkp@intel.com> Reviewed-by: Andreas Dilger <adilger@dilger.ca> Signed-off-by: Fengnan Chang <changfengnan@hikvision.com> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20201012164900.20197-1-jack@suse.cz Signed-off-by: Theodore Ts'o <tytso@mit.edu> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.