freebsd-dev/sys/compat/linuxkpi/common/include/linux/shmem_fs.h
Emmanuel Vadot 1179b649cf linuxkpi: Move shmem related functions in it's own file
For drmkpi (D23085) we don't want the Linux struct file as we don't emulate
everything. Also the prototypes should be in shmem_fs.h to have 100%
compatibility with Linux.

Reviewed by:	hselasky
MFC after:	Maybe
Differential Revision:	https://reviews.freebsd.org/D23764
2020-02-21 09:28:45 +00:00

56 lines
2.3 KiB
C

/*-
* Copyright (c) 2010 Isilon Systems, Inc.
* Copyright (c) 2010 iX Systems, Inc.
* Copyright (c) 2010 Panasas, Inc.
* Copyright (c) 2013-2018 Mellanox Technologies, Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _LINUX_SHMEM_FS_H_
#define _LINUX_SHMEM_FS_H_
/* Shared memory support */
unsigned long linux_invalidate_mapping_pages(vm_object_t, pgoff_t, pgoff_t);
struct page *linux_shmem_read_mapping_page_gfp(vm_object_t, int, gfp_t);
struct linux_file *linux_shmem_file_setup(const char *, loff_t, unsigned long);
void linux_shmem_truncate_range(vm_object_t, loff_t, loff_t);
#define invalidate_mapping_pages(...) \
linux_invalidate_mapping_pages(__VA_ARGS__)
#define shmem_read_mapping_page(...) \
linux_shmem_read_mapping_page_gfp(__VA_ARGS__, 0)
#define shmem_read_mapping_page_gfp(...) \
linux_shmem_read_mapping_page_gfp(__VA_ARGS__)
#define shmem_file_setup(...) \
linux_shmem_file_setup(__VA_ARGS__)
#define shmem_truncate_range(...) \
linux_shmem_truncate_range(__VA_ARGS__)
#endif /* _LINUX_SHMEM_FS_H_ */