Date: Thu, 25 May 2006 15:15:38 +0400 From: Gleb Smirnoff <glebius@FreeBSD.org> To: Stephan Uphoff <ups@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: <20060525111538.GK27819@FreeBSD.org> In-Reply-To: <200605250100.k4P10a3P002448@repoman.freebsd.org> References: <200605250100.k4P10a3P002448@repoman.freebsd.org>
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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 -- Totus tuus, Glebius. GLEBIUS-RIPN GLEB-RIPE
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