✏ EDIT: kernel-page-flags.h/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef LINUX_KERNEL_PAGE_FLAGS_H
#define LINUX_KERNEL_PAGE_FLAGS_H

/*
 * Stable page flag bits exported to user space
 */

#define KPF_LOCKED		0
#define KPF_ERROR		1
#define KPF_REFERENCED		2
#define KPF_UPTODATE		3
#define KPF_DIRTY		4
#define KPF_LRU			5
#define KPF_ACTIVE		6
#define KPF_SLAB		7
#define KPF_WRITEBACK		8
#define KPF_RECLAIM		9
#define KPF_BUDDY		10

/* 11-20: new additions in 2.6.31 */
#define KPF_MMAP		11
#define KPF_ANON		12
#define KPF_SWAPCACHE		13
#define KPF_SWAPBACKED		14
#define KPF_COMPOUND_HEAD	15
#define KPF_COMPOUND_TAIL	16
#define KPF_HUGE		17
#define KPF_UNEVICTABLE		18
#define KPF_HWPOISON		19
#define KPF_NOPAGE		20

#define KPF_KSM			21
#define KPF_THP			22
#define KPF_OFFLINE		23
#define KPF_ZERO_PAGE		24
#define KPF_IDLE		25
#define KPF_PGTABLE		26

#endif /* LINUX_KERNEL_PAGE_FLAGS_H */


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