82 lines
2.5 KiB
Groff
82 lines
2.5 KiB
Groff
.\"
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.\" Copyright (c) 2003 Bruce M Simpson <bms@spc.org>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd July 9, 2011
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.Dt VM_MAP_SYNC 9
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.Os
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.Sh NAME
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.Nm vm_map_sync
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.Nd push dirty pages to their pager
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.Sh SYNOPSIS
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.In sys/param.h
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.In vm/vm.h
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.In vm/vm_map.h
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.Ft int
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.Fo vm_map_sync
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.Fa "vm_map_t map" "vm_offset_t start" "vm_offset_t end" "boolean_t syncio"
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.Fa "boolean_t invalidate"
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.Fc
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.Sh DESCRIPTION
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The
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.Fn vm_map_sync
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function forces any dirty cached pages in the range
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.Fa start
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to
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.Fa end
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within the
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.Fa map
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to be pushed to their underlying pager.
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.Pp
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If
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.Fa syncio
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is TRUE, dirty pages are written synchronously.
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.Pp
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If
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.Fa invalidate
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is TRUE, any cached pages are also freed.
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.Pp
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The range provided must be contiguous, it MUST NOT contain holes.
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The range provided MUST NOT contain any sub-map entries.
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.Sh RETURN VALUES
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The
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.Fn vm_map_sync
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function returns
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.Dv KERN_SUCCESS
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if successful.
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.Pp
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Otherwise,
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.Dv KERN_INVALID_ADDRESS
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will be returned if the function encountered a sub-map entry;
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.Dv KERN_INVALID_ARGUMENT
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will be returned if the function encountered a hole in the region provided,
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or if an entry could not be found for the given start address.
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.Sh SEE ALSO
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.Xr vm_map 9
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.Sh AUTHORS
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This manual page was written by
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.An Bruce M Simpson Aq bms@spc.org .
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