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The C and C++ Include Header Files

cat -n /usr/include/linux/kernel-page-flags.h

     1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
     2	#ifndef LINUX_KERNEL_PAGE_FLAGS_H
     3	#define LINUX_KERNEL_PAGE_FLAGS_H
     4	
     5	/*
     6	 * Stable page flag bits exported to user space
     7	 */
     8	
     9	#define KPF_LOCKED		0
    10	#define KPF_ERROR		1	/* Now unused */
    11	#define KPF_REFERENCED		2
    12	#define KPF_UPTODATE		3
    13	#define KPF_DIRTY		4
    14	#define KPF_LRU			5
    15	#define KPF_ACTIVE		6
    16	#define KPF_SLAB		7
    17	#define KPF_WRITEBACK		8
    18	#define KPF_RECLAIM		9
    19	#define KPF_BUDDY		10
    20	
    21	/* 11-20: new additions in 2.6.31 */
    22	#define KPF_MMAP		11
    23	#define KPF_ANON		12
    24	#define KPF_SWAPCACHE		13
    25	#define KPF_SWAPBACKED		14
    26	#define KPF_COMPOUND_HEAD	15
    27	#define KPF_COMPOUND_TAIL	16
    28	#define KPF_HUGE		17
    29	#define KPF_UNEVICTABLE		18
    30	#define KPF_HWPOISON		19
    31	#define KPF_NOPAGE		20
    32	
    33	#define KPF_KSM			21
    34	#define KPF_THP			22
    35	#define KPF_OFFLINE		23
    36	#define KPF_ZERO_PAGE		24
    37	#define KPF_IDLE		25
    38	#define KPF_PGTABLE		26
    39	
    40	#endif /* LINUX_KERNEL_PAGE_FLAGS_H */