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.\" |
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.\" Copyright (C) 2001 Chad David <davidc@acns.ab.ca>. 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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.\" the first lines of this file unmodified other than the possible |
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.\" 2. Redistributions in binary form must reproduce the above copyright |
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.\" notice(s), 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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.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY |
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.\" EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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.\" $FreeBSD: src/share/man/man9/vm_page_sleep_busy.9,v 1.2 2005/06/28 20:15:18 hmp Exp $ |
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.\" $MidnightBSD$ |
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.\" |
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.Dd July 13, 2001 |
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.Dt VM_PAGE_SLEEP_BUSY 9 |
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.Os |
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.Sh NAME |
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.Nm vm_page_sleep_busy |
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.Nd "wait for a busy page to become unbusy" |
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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_page.h |
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.Ft int |
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.Fn vm_page_sleep_busy "vm_page_t m" "int also_m_busy" "const char *wmesg" |
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.Sh DESCRIPTION |
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The |
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.Fn vm_page_sleep_busy |
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function waits until the |
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.Dv PG_BUSY |
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flag is cleared. |
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If |
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.Fa also_m_busy |
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is non-zero, it also waits for |
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.Fa m->busy |
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to become zero. |
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.Sh RETURN VALUES |
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If |
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.Fn vm_page_sleep_busy |
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finds the page busy it returns |
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.Dv TRUE . |
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If not, it returns |
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.Dv FALSE . |
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Returning |
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.Dv TRUE |
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does not necessary mean that |
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.Fn vm_page_sleep_busy |
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slept, but only that |
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.Fn splvm |
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was called. |
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.Sh AUTHORS |
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This manual page was written by |
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.An Chad David Aq davidc@acns.ab.ca . |
