1 /* 2 * Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved. 3 * Copyright (c) 2020, Huawei Device Co., Ltd. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without modification, 6 * are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, this list of 9 * conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list 12 * of conditions and the following disclaimer in the documentation and/or other materials 13 * provided with the distribution. 14 * 15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used 16 * to endorse or promote products derived from this software without specific prior written 17 * permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 #ifndef __LINUX_PAGEMAP_H__ 32 #define __LINUX_PAGEMAP_H__ 33 34 #include "asm/page.h" 35 36 #ifdef __cplusplus 37 #if __cplusplus 38 extern "C" { 39 #endif /* __cplusplus */ 40 #endif /* __cplusplus */ 41 42 #define COMPAT_PAGE_SHIFT 12 43 #define COMPAT_PAGE_CACHE_SHIFT COMPAT_PAGE_SHIFT 44 #define COMPAT_PAGE_CACHE_SIZE PAGE_SIZE 45 46 #define PageLocked(page) 1 47 #define Page_Uptodate(page) 0 48 #define UnlockPage(page) 49 #define PAGE_BUG(page) BUG() 50 #define ClearPageUptodate(page) 51 #define SetPageError(page) 52 #define ClearPageError(page) 53 #define SetPageUptodate(page) 54 55 #define PAGE_CACHE_SHIFT COMPAT_PAGE_CACHE_SHIFT 56 #define PAGE_CACHE_SIZE COMPAT_PAGE_CACHE_SIZE 57 58 #ifdef __cplusplus 59 #if __cplusplus 60 } 61 #endif /* __cplusplus */ 62 #endif /* __cplusplus */ 63 64 #endif /* __LINUX_PAGEMAP_H__ */ 65