1 /*- 2 * Copyright (c) 2010 Isilon Systems, Inc. 3 * Copyright (c) 2010 iX Systems, Inc. 4 * Copyright (c) 2010 Panasas, Inc. 5 * Copyright (c) 2013-2018 Mellanox Technologies, Ltd. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice unmodified, this list of conditions, and the following 13 * disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 #ifndef _LINUXKPI_LINUX_SHMEM_FS_H_ 30 #define _LINUXKPI_LINUX_SHMEM_FS_H_ 31 32 #include <linux/file.h> 33 #include <linux/mempolicy.h> 34 #include <linux/pagemap.h> 35 #include <linux/swap.h> 36 37 /* Shared memory support */ 38 struct page *linux_shmem_read_mapping_page_gfp(vm_object_t obj, int pindex, 39 gfp_t gfp); 40 struct linux_file *linux_shmem_file_setup(const char *name, loff_t size, 41 unsigned long flags); 42 void linux_shmem_truncate_range(vm_object_t obj, loff_t lstart, 43 loff_t lend); 44 45 #define shmem_read_mapping_page(...) \ 46 linux_shmem_read_mapping_page_gfp(__VA_ARGS__, 0) 47 48 #define shmem_read_mapping_page_gfp(...) \ 49 linux_shmem_read_mapping_page_gfp(__VA_ARGS__) 50 51 #define shmem_file_setup(...) \ 52 linux_shmem_file_setup(__VA_ARGS__) 53 54 #define shmem_truncate_range(...) \ 55 linux_shmem_truncate_range(__VA_ARGS__) 56 57 #endif /* _LINUXKPI_LINUX_SHMEM_FS_H_ */ 58