Date: Thu, 28 Jun 2012 22:03:59 +0000 (UTC) From: Alan Cox <alc@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r237733 - head/sys/amd64/amd64 Message-ID: <201206282203.q5SM3xjj001235@svn.freebsd.org>
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Author: alc Date: Thu Jun 28 22:03:59 2012 New Revision: 237733 URL: http://svn.freebsd.org/changeset/base/237733 Log: Avoid some unnecessary PV list locking in pmap_enter(). Modified: head/sys/amd64/amd64/pmap.c Modified: head/sys/amd64/amd64/pmap.c ============================================================================== --- head/sys/amd64/amd64/pmap.c Thu Jun 28 21:24:56 2012 (r237732) +++ head/sys/amd64/amd64/pmap.c Thu Jun 28 22:03:59 2012 (r237733) @@ -3570,7 +3570,7 @@ validate: if ((newpte & PG_RW) == 0) invlva = TRUE; } - if ((origpte & PG_MANAGED) != 0) { + if ((om->aflags & PGA_WRITEABLE) != 0) { CHANGE_PV_LIST_LOCK_TO_VM_PAGE(&lock, om); if (TAILQ_EMPTY(&om->md.pv_list) && ((om->flags & PG_FICTITIOUS) != 0 ||
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