Date: Wed, 10 Mar 1999 21:56:51 -0800 (PST) From: Alan Cox <alc@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/vm vm_map.c vm_map.h Message-ID: <199903110556.VAA27874@freefall.freebsd.org>
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alc 1999/03/10 21:56:51 PST
Modified files: (Branch: RELENG_3)
sys/vm vm_map.c vm_map.h
Log:
MFC:
Change vm_map_growstack to acquire and hold a read lock (instead of a write
lock) until it actually needs to modify the vm_map.
Upgrading a map's lock to exclusive status should increment
the map's timestamp. In general, whenever an exclusive lock is
acquired the timestamp should be incremented.
Revision Changes Path
1.139.2.5 +17 -11 src/sys/vm/vm_map.c
1.33.2.2 +6 -2 src/sys/vm/vm_map.h
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