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4980f71202
According to the implementation of cgroup_css_set_fork(), it will fail if cset cannot be found and the can_fork/cancel_fork methods will not be called in this case, which means that the argument 'cset' for these methods must not be NULL, so remove the unrechable paths in them. Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com> Reviewed-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@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 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.