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2b41226d7f
Upcoming patches are going to add two new ioctls for running fsck in the kernel, but pretending that we're running our normal userspace fsck. This patch adds some plumbing for redirecting our normal log messages away from the dmesg log to a thread_with_file file descriptor - via a struct log_output, which will be consumed by the fsck f_op's read method. The new ioctls will allow for running fsck in the kernel against an offline filesystem (without mounting it), and an online filesystem. For an offline filesystem we need a way to pass in a pointer to the log_output, which is done via a new hidden opts.h option. For online fsck, we can set c->output directly, but only want to redirect log messages from the thread running fsck - hence the new c->output_filter method. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
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| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
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| net | ||
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| security | ||
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| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
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| .mailmap | ||
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| 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.