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Writing to /proc/fs/nfsd/versions allows individual major versions and NFSv4 minor versions to be enabled or disabled. However NFSv4.0 cannot currently be disabled, thought there is no good reason. Also the minor number is parsed as a 'long' but used as an 'int' so '4294967297' will be incorrectly treated as '1'. This patch removes the test on 'minor == 0' and switches to kstrtouint() to get correct range checking. When reading from /proc/fs/nfsd/versions, 4.0 is current not reported. To allow the disabling for v4.0 to be visible, while maintaining backward compatibility, change code to report "-4.0" if appropriate, but not "+4.0". Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. 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.