1.\" 2.\" Copyright (c) 2003 Bruce M Simpson <bms@spc.org> 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.\" $FreeBSD$ 27.\" 28.Dd July 9, 2011 29.Dt VM_MAP_SYNC 9 30.Os 31.Sh NAME 32.Nm vm_map_sync 33.Nd push dirty pages to their pager 34.Sh SYNOPSIS 35.In sys/param.h 36.In vm/vm.h 37.In vm/vm_map.h 38.Ft int 39.Fo vm_map_sync 40.Fa "vm_map_t map" "vm_offset_t start" "vm_offset_t end" "boolean_t syncio" 41.Fa "boolean_t invalidate" 42.Fc 43.Sh DESCRIPTION 44The 45.Fn vm_map_sync 46function forces any dirty cached pages in the range 47.Fa start 48to 49.Fa end 50within the 51.Fa map 52to be pushed to their underlying pager. 53.Pp 54If 55.Fa syncio 56is TRUE, dirty pages are written synchronously. 57.Pp 58If 59.Fa invalidate 60is TRUE, any cached pages are also freed. 61.Pp 62The range provided must be contiguous, it MUST NOT contain holes. 63The range provided MUST NOT contain any sub-map entries. 64.Sh RETURN VALUES 65The 66.Fn vm_map_sync 67function returns 68.Dv KERN_SUCCESS 69if successful. 70.Pp 71Otherwise, 72.Dv KERN_INVALID_ADDRESS 73will be returned if the function encountered a sub-map entry; 74.Dv KERN_INVALID_ARGUMENT 75will be returned if the function encountered a hole in the region provided, 76or if an entry could not be found for the given start address. 77.Sh SEE ALSO 78.Xr vm_map 9 79.Sh AUTHORS 80This manual page was written by 81.An Bruce M Simpson Aq Mt bms@spc.org . 82