cvs commit: src/sys/vm vm_object.c
alc at FreeBSD.org
Tue Mar 29 21:40:03 PST 2005
alc 2005-03-30 05:40:02 UTC
FreeBSD src repository
Eliminate (now) unnecessary acquisition and release of the global page
queues lock in vm_object_backing_scan(). Updates to the page's PG_BUSY
flag and busy field are synchronized by the containing object's lock.
Testing the page's hold_count and wire_count in vm_object_backing_scan()'s
OBSC_COLLAPSE_NOWAIT case is unnecessary. There is no reason why the held
or wired pages cannot be migrated to the shadow object.
Reviewed by: tegge
Revision Changes Path
1.347 +1 -5 src/sys/vm/vm_object.c
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