Date: Sun, 28 Nov 2004 00:36:57 +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: <200411280036.iAS0avcH058983@repoman.freebsd.org>
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alc 2004-11-28 00:36:57 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_5)
sys/vm vm_fault.c
Log:
MFC revision 1.198
Remove unnecessary check for curthread == NULL.
MFC revision 1.197
System maps are prohibited from mapping vnode-backed objects. Take
advantage of this restriction to avoid acquiring and releasing Giant when
wiring pages within a system map.
MFC revisions 1.193 and 1.194
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.
Revision Changes Path
1.192.2.1 +11 -7 src/sys/vm/vm_fault.c
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