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f5d64ae331
The sysctl_drop_caches to fs/drop_caches.c, move it to fs/drop_caches.c from /kernel/sysctl.c. And remove the useless extern variable declaration from include/linux/mm.h Signed-off-by: Kaixiong Yu <yukaixiong@huawei.com> Reviewed-by: Kees Cook <kees@kernel.org> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Christian Brauner <brauner@kernel.org> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Joel Granados <joel.granados@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.