Date: Fri, 17 Apr 2009 11:32:47 -0500 From: Alan Cox <alc@cs.rice.edu> To: John Baldwin <jhb@freebsd.org> Cc: Alan Cox <alc@freebsd.org>, svn-src-stable@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, svn-src-stable-7@freebsd.org Subject: Re: svn commit: r191204 - in stable/7/sys: . contrib/pf dev/ath/ath_hal dev/cxgb vm Message-ID: <49E8AF2F.1090708@cs.rice.edu> In-Reply-To: <200904171144.51791.jhb@freebsd.org> References: <200904171535.n3HFZGoH026439@svn.freebsd.org> <200904171144.51791.jhb@freebsd.org>
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John Baldwin wrote: > On Friday 17 April 2009 11:35:16 am Alan Cox wrote: > >> Author: alc >> Date: Fri Apr 17 15:35:16 2009 >> New Revision: 191204 >> URL: http://svn.freebsd.org/changeset/base/191204 >> >> Log: >> MFC r175055 >> Defer setting either PG_CACHED or PG_FREE until after the free page >> queues lock is acquired. Otherwise, the state of a reservation's >> pages' flags and its population count can be inconsistent. That could >> result in a page being freed twice. >> >> (This change should have been included in the MFC of the superpages >> support.) >> >> Thanks to: pho for an illuminating crash >> > > Thanks. > > Pointy hat to: jhb > > I think that your bravery to even attempt the MFC absolves you of several pointy hats. I was too chicken. :-) Alan
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