Date: Sat, 21 Aug 2004 19:20:21 +0000 (UTC) From: Alan Cox <alc@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/vm vm_fault.c Message-ID: <200408211920.i7LJKLlA088634@repoman.freebsd.org>
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alc 2004-08-21 19:20:21 UTC
FreeBSD src repository
Modified files:
sys/vm vm_fault.c
Log:
Further reduce the use of Giant by vm_fault(): Giant is held only when
manipulating a vnode, e.g., calling vput(). This reduces contention for
Giant during many copy-on-write faults, resulting in some additional
speedup on SMPs.
Note: debug_mpsafevm must be enabled for this optimization to take effect.
Revision Changes Path
1.193 +3 -4 src/sys/vm/vm_fault.c
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