mlaier 2010-12-19 06:07:35 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_8)
sys/vm vm_map.c vm_map.h
SVN rev 216553 on 2010-12-19 06:07:35Z 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.
Sponsored by: Isilon Systems, Inc.
Approved by: re (kib)
Revision Changes Path
1.419.2.11 +41 -1 src/sys/vm/vm_map.c
184.108.40.206 +5 -0 src/sys/vm/vm_map.h