Date: Thu, 9 Dec 2010 21:02:22 +0000 (UTC) From: Max Laier <mlaier@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/vm vm_map.c vm_map.h Message-ID: <201012092102.oB9L2ixi049339@repoman.freebsd.org>
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mlaier 2010-12-09 21:02:22 UTC
FreeBSD src repository
Modified files:
sys/vm vm_map.c vm_map.h
Log:
SVN rev 216335 on 2010-12-09 21:02:22Z by mlaier
Fix a long standing (from the original 4.4BSD lite sources) race between
vmspace_fork and vm_map_wire that would lead to "vm_fault_copy_wired: page
missing" panics. While faulting in pages for a map entry that is being
wired down, mark the containing map as busy. In vmspace_fork wait until the
map is unbusy, before we try to copy the entries.
Reviewed by: kib
MFC after: 5 days
Sponsored by: Isilon Systems, Inc.
Revision Changes Path
1.439 +41 -1 src/sys/vm/vm_map.c
1.139 +5 -0 src/sys/vm/vm_map.h
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