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08aa647960
In situation when copy_page_to_iter() got a compound page the current code would only work on systems with no CONFIG_HIGHMEM. It *is* the majority of real-world setups, or we would've drown in bug reports by now. Still needs fixing. Current variant works for solitary page; rename that to __copy_page_to_iter() and turn the handling of compound pages into a loop over subpages. Cc: stable@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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.