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The cpfile, a metadata file that holds metadata for checkpoint management, also has statistical information in its first block, and if reading this block fails, it receives the internal code -ENOENT and returns that code to the callers. As with sufile, to prevent this -ENOENT from being propagated to system calls, return -EIO instead when reading the header block fails. Link: https://lkml.kernel.org/r/20240821154627.11848-3-konishi.ryusuke@gmail.com Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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.