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Index of /FSS-OZR/root/sys/dev/char/4:64/subsystem/tty47
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Index of /FSS-OZR/root/sys/dev/char/4:4/subsystem/tty56
Index of /FSS-OZR/root/sys/dev/char/4:4/subsystem/tty56
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3 /* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_PAGE_EXT_H
#define __LINUX_PAGE_EXT_H
#include
#include
#include
struct pglist_data;
#ifdef CONFIG_PAGE_EXTENSION
/**
* struct page_ext_operations - per page_ext client operations
* @offset: Offset to the client's data within page_ext. Offset is returned to
* the client by page_ext_init.
* @size: The size of the client data within page_ext.
* @need: Function that returns true if client requires page_ext.
* @init: (optional) Called to initialize client once page_exts are allocated.
* @need_shared_flags: True when client is using shared page_ext->flags
* field.
*
* Each Page Extension client must define page_ext_operations in
* page_ext_ops array.
*/
struct page_ext_operations {
size_t offset;
size_t size;
bool (*need)(void);
void (*init)(void);
bool need_shared_flags;
};
/*
* The page_ext_flags users must set need_shared_flags to true.
*/
enum page_ext_flags