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  #   QˆÕÔƒí?Ïa–Ým_J*j"Tâ€Æ¸ÓJbÑ¿× …    Q/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_MM_PAGE_IDLE_H
#define _LINUX_MM_PAGE_IDLE_H

#include <linux/bitops.h>
#include <linux/page-flags.h>
#include <linux/page_ext.h>

#ifdef CONFIG_PAGE_IDLE_FLAG

#ifndef CONFIG_64BIT
/*
 * If there is not enough space to store Idle and Young bits in page flags, use
 * page ext flags instead.
 */
static inline bool folio_test_young(struct folio *folio)
{
	struct page_ext *page_ext = page_ext_get(&folio->page);
	bool page_young;

	if (unlikely(!page_ext))
		return false;

	page_young = test_bit(PAGE_EXT_YOUNG, &page_ext->flags);
	page_ext_put(page_ext);

	return page_young;
}

static inline void folio_set_young(struct folio *folio)
{
	struct page_ext *page_ext = page_ext_get(&folio->page);

	if (unlikely(!page_ext))
		return;

	set_bit(PAGE_EXT_YOUNG, &page_ext->flags);
	page_ext_put(page_ext);
}

static inline bool folio_test_clear_young(struct folio *folio)
{
	struct page_ext *page_ext = page_ext_get(&folio->page);
	bool page_young;

	if (unlikely(!page_ext))
		return false;

	page_young = test_and_clear_bit(PAGE_EXT_YOUNG, &page_ext->flags);
	page_ext_put(page_ext);

	return page_young;
}

static inline bool folio_test_idle(struct folio *folio)
{
	struct page_ext *page_ext = page_ext_get(&folio->page);
	bool page_idle;

	if (unlikely(!page_ext))
		return false;

	page_idle =  test_bit(PAGE_EXT_IDLE, &page_ext->flags);
	page_ext_put(page_ext);

	return page_idle;
}

static inline void folio_set_idle(struct folio *folio)
{
	struct page_ext *page_ext = page_ext_get(&folio->page);

	if (unlikely(!page_ext))
		return;

	set_bit(PAGE_EXT_IDLE, &page_ext->flags);
	page_ext_put(page_ext);
}

static inline void folio_clear_idle(struct folio *folio)
{
	struct page_ext *page_ext = page_ext_get(&folio->page);

	if (unlikely(!page_ext))
		return;

	clear_bit(PAGE_EXT_IDLE, &page_ext->flags);
	page_ext_put(page_ext);
}
#endif /* !CONFIG_64BIT */

#else /* !CONFIG_PAGE_IDLE_FLAG */

static inline bool folio_test_young(struct folio *folio)
{
	return false;
}

static inline void folio_set_young(struct folio *folio)
{
}

static inline bool folio_test_clear_young(struct folio *folio)
{
	return false;
}

static inline bool folio_test_idle(struct folio *folio)
{
	return false;
}

static inline void folio_set_idle(struct folio *folio)
{
}

static inline void folio_clear_idle(struct folio *folio)
{
}

#endif /* CONFIG_PAGE_IDLE_FLAG */

static inline bool page_is_young(struct page *page)
{
	return folio_test_young(page_folio(page));
}

static inline void set_page_young(struct page *page)
{
	folio_set_young(page_folio(page));
}

static inline bool test_and_clear_page_young(struct page *page)
{
	return folio_test_clear_young(page_folio(page));
}

static inline bool page_is_idle(struct page *page)
{
	return folio_test_idle(page_folio(page));
}

static inline void set_page_idle(struct page *page)
{
	folio_set_idle(page_folio(page));
}
#endif /* _LINUX_MM_PAGE_IDLE_H */
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     WˆÖÕƒeçYÐ¾× !    W/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Wrapper functions for accessing the file_struct fd array.
 */

#ifndef __LINUX_FILE_H
#define __LINUX_FILE_H

#include <linux/compiler.h>
#include <linux/types.h>
#include <linux/posix_types.h>
#include <linux/errno.h>
#include <linux/cleanup.h>
#include <linux/err.h>

struct file;

extern void fput(struct file *);
extern void fput_many(struct file *, unsigned int);

struct file_operations;
struct task_struct;
struct vfsmount;
struct dentry;
struct inode;
struct path;
extern struct file *alloc_file_pseudo(struct inode *, struct vfsmount *,
	const char *, int flags, const struct file_operations *);
extern struct file *alloc_file_pseudo_noaccount(struct inode *, struct vfsmount *,
	const char *, int flags, const struct file_operations *);
extern struct file *alloc_file_clone(struct file *, int flags,
	const struct file_operations *);

static inline void fput_light(struct file *file, int fput_needed)
{
	if (fput_needed)
		fput(fi