Date: Thu, 25 May 2006 10:26:03 -0400 From: Stephan Uphoff <ups@freebsd.org> To: Gleb Smirnoff <glebius@FreeBSD.org> Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/kern vfs_subr.c src/sys/nfsclient nfs_bio.c src/sys/fs/smbfs smbfs_io.c src/sys/fs/nwfs nwfs_io.c Message-ID: <4475BE7B.50106@freebsd.org> In-Reply-To: <20060525111538.GK27819@FreeBSD.org> References: <200605250100.k4P10a3P002448@repoman.freebsd.org> <20060525111538.GK27819@FreeBSD.org>
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Gleb Smirnoff wrote: > On Thu, May 25, 2006 at 01:00:36AM +0000, Stephan Uphoff wrote: > S> ups 2006-05-25 01:00:36 UTC > S> > S> FreeBSD src repository > S> > S> Modified files: > S> sys/kern vfs_subr.c > S> sys/nfsclient nfs_bio.c > S> sys/fs/smbfs smbfs_io.c > S> sys/fs/nwfs nwfs_io.c > S> Log: > S> Do not set B_NOCACHE on buffers when releasing them in flushbuflist(). > S> If B_NOCACHE is set the pages of vm backed buffers will be invalidated. > S> However clean buffers can be backed by dirty VM pages so invalidating them > S> can lead to data loss. > S> Add support for flush dirty page in the data invalidation function > S> of some network file systems. > S> > S> This fixes data losses during vnode recycling (and other code paths > S> using invalbuf(*,V_SAVE,*,*)) for data written using an mmaped file. > S> > S> Collaborative effort by: jhb@,mohans@,peter@,ps@,ups@ > S> Reviewed by: tegge@ > S> MFC after: 7 days > > Can this be related to reports like this: > > http://freebsd.rambler.ru/bsdmail/freebsd-current_curr/msg00282.html > > I believe that this is unrelated and that the sender of the message needs to re-install screen as suggested by http://freebsd.rambler.ru/bsdmail/freebsd-current_curr/msg00283.html If I recall correctly this is required due to changes in the pty code. Stephan
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