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22d41cdcd3
The checks for page->mapping are odd, as set_page_dirty is an address_space operation, and I don't see where it would be called on a non-pagecache page. The warning about the page lock also seems bogus. The comment over set_page_dirty() says that it can be called without the page lock in some rare cases. I don't think we want to warn if that's the case. Reported-by: Matthew Wilcox <willy@infradead.org> Signed-off-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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.