Date: Sun, 24 Oct 2004 06:15:37 +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_page.c vm_page.h Message-ID: <200410240615.i9O6FbSb069345@repoman.freebsd.org>
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alc 2004-10-24 06:15:37 UTC
FreeBSD src repository
Modified files:
sys/vm vm_page.c vm_page.h
Log:
Introduce VM_ALLOC_NOBUSY, an option to vm_page_alloc() and vm_page_grab()
that indicates that the caller does not want a page with its busy flag set.
In many places, the global page queues lock is acquired and released just
to clear the busy flag on a just allocated page. Both the allocation of
the page and the clearing of the busy flag occur while the containing vm
object is locked. So, the busy flag might as well never be set.
Revision Changes Path
1.294 +3 -2 src/sys/vm/vm_page.c
1.134 +1 -0 src/sys/vm/vm_page.h
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