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"page_counter.h" does not need <linux/kernel.h>. <linux/limits.h> is enough to get LONG_MAX. Files that include page_counter.h are limited. They have been compile tested or checked. $ git grep page_counter\.h include/linux/hugetlb_cgroup.h: struct page_counter hugepage[HUGE_MAX_HSTATE]; --> all files that include it have been compile tested include/linux/memcontrol.h:#include <linux/page_counter.h> --> <linux/kernel.h> has been added, to be safe include/net/sock.h:#include <linux/page_counter.h> --> already include <linux/kernel.h> mm/hugetlb_cgroup.c:#include <linux/page_counter.h> mm/memcontrol.c:#include <linux/page_counter.h> mm/page_counter.c:#include <linux/page_counter.h> --> compile tested Link: https://lkml.kernel.org/r/adfdbe21c4d06400d7bd802868762deb85cae8b6.1706908921.git.christophe.jaillet@wanadoo.fr Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Andrew Morton <akpm@linux-foundation.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.
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.