Date: Mon, 18 Jun 2007 02:04:39 +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_pageout.c Message-ID: <200706180204.l5I24drw073100@repoman.freebsd.org>
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alc 2007-06-18 02:04:39 UTC
FreeBSD src repository
Modified files:
sys/vm vm_pageout.c
Log:
Eliminate unnecessary checks from vm_pageout_clean(): The page that is
passed to vm_pageout_clean() cannot possibly be PG_UNMANAGED because
it came from the inactive queue and PG_UNMANAGED pages are not in any
page queue. Moreover, PG_UNMANAGED pages only exist in OBJT_PHYS
objects, and all pages within a OBJT_PHYS object are PG_UNMANAGED.
So, if the page that is passed to vm_pageout_clean() is not
PG_UNMANAGED, then it cannot be from an OBJT_PHYS object and its
neighbors from the same object cannot themselves be PG_UNMANAGED.
Reviewed by: tegge
Revision Changes Path
1.287 +4 -7 src/sys/vm/vm_pageout.c
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