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Index of /anon_sym/anon/proc/thread-self/cwd/sys/dev/char/13:63
Index of /anon_sym/anon/proc/thread-self/cwd/sys/dev/char/13:63
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/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2024 Intel Corporation
*/
#ifndef _TTM_BACKUP_H_
#define _TTM_BACKUP_H_
#include
#include
/**
* ttm_backup_handle_to_page_ptr() - Convert handle to struct page pointer
* @handle: The handle to convert.
*
* Converts an opaque handle received from the
* ttm_backup_backup_page() function to an (invalid)
* struct page pointer suitable for a struct page array.
*
* Return: An (invalid) struct page pointer.
*/
static inline struct page *
ttm_backup_handle_to_page_ptr(unsigned long handle)
{
return (struct page *)(handle << 1 | 1);
}
/**
* ttm_backup_page_ptr_is_handle() - Whether a struct page pointer is a handle
* @page: The struct page pointer to check.
*
* Return: true if the struct page pointer is a handld returned from
* ttm_backup_handle_to_page_ptr(). False otherwise.
*/
static inline bool ttm_backup_page_ptr_is_handle(const struct page *page)
{
return (unsigned long)page & 1;
}
/**
* ttm_backup_page_ptr_to_handle() - Convert a struct page pointer to a handle
* @page: The struct page pointer to conver