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And after commit95257987a6("ext4: drop EXT4_MF_FS_ABORTED flag") in v6.6-rc1, the EXT4_FLAGS_SHUTDOWN bit is set in ext4_handle_error() under errors=remount-ro mode. This causes the read to fail even when the error is triggered in errors=remount-ro mode. To correct the behavior under errors=remount-ro, EXT4_FLAGS_SHUTDOWN is replaced by the newly introduced EXT4_FLAGS_EMERGENCY_RO. This new flag only prevents writes, matching the previous behavior with SB_RDONLY. Fixes:95257987a6("ext4: drop EXT4_MF_FS_ABORTED flag") Closes: https://lore.kernel.org/all/22d652f6-cb3c-43f5-b2fe-0a4bb6516a04@huawei.com/ Suggested-by: Jan Kara <jack@suse.cz> Signed-off-by: Baokun Li <libaokun1@huawei.com> Reviewed-by: Zhang Yi <yi.zhang@huawei.com> Reviewed-by: Jan Kara <jack@suse.cz> Link: https://patch.msgid.link/20250122114130.229709-6-libaokun@huaweicloud.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 reStructuredText 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.