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.Dd July 9, 2011 27.Dt VM_MAP_SYNC 9 28.Os 29.Sh NAME 30.Nm vm_map_sync 31.Nd push dirty pages to their pager 32.Sh SYNOPSIS 33.In sys/param.h 34.In vm/vm.h 35.In vm/vm_map.h 36.Ft int 37.Fo vm_map_sync 38.Fa "vm_map_t map" "vm_offset_t start" "vm_offset_t end" "boolean_t syncio" 39.Fa "boolean_t invalidate" 40.Fc 41.Sh DESCRIPTION 42The 43.Fn vm_map_sync 44function forces any dirty cached pages in the range 45.Fa start 46to 47.Fa end 48within the 49.Fa map 50to be pushed to their underlying pager. 51.Pp 52If 53.Fa syncio 54is TRUE, dirty pages are written synchronously. 55.Pp 56If 57.Fa invalidate 58is TRUE, any cached pages are also freed. 59.Pp 60The range provided must be contiguous, it MUST NOT contain holes. 61The range provided MUST NOT contain any sub-map entries. 62.Sh RETURN VALUES 63The 64.Fn vm_map_sync 65function returns 66.Dv KERN_SUCCESS 67if successful. 68.Pp 69Otherwise, 70.Dv KERN_INVALID_ADDRESS 71will be returned if the function encountered a sub-map entry; 72.Dv KERN_INVALID_ARGUMENT 73will be returned if the function encountered a hole in the region provided, 74or if an entry could not be found for the given start address. 75.Sh SEE ALSO 76.Xr vm_map 9 77.Sh AUTHORS 78This manual page was written by 79.An Bruce M Simpson Aq Mt bms@spc.org . 80