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4ac106b3b7
As Dan reported: "We put an upper bound on ->write_io_size_bits but we don't have a lower bound." So let's add lower bound check for ->write_io_size_bits in parse_options(). [We don't allow configuring ->write_io_size_bits to zero, since at least we need to fill one dummy page for aligned IO.] Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.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 Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
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.