Date: Sat, 06 Jun 2009 17:12:27 +0200 From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no> To: Kostik Belousov <kostikbel@gmail.com> Cc: current@freebsd.org Subject: Re: LOR between NFS and syncer Message-ID: <86ab4lflb8.fsf@ds4.des.no> In-Reply-To: <20090606115154.GI1927@deviant.kiev.zoral.com.ua> (Kostik Belousov's message of "Sat, 6 Jun 2009 14:51:54 %2B0300") References: <86skief8q6.fsf@ds4.des.no> <20090606115154.GI1927@deviant.kiev.zoral.com.ua>
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Kostik Belousov <kostikbel@gmail.com> writes: > The vnode list for the mount point also includes syncer vnode, that > has a special fsync vop. Usual order is syncer vnode lock -> vnode > lock for the real vnodes. But, when filesystem is unmounted, we get > the order covered vnode -> any filesystem vnode during sync before > unmount. This one gives the LOR you reported, assuming you unmounted > nfs share mounted on the top of nfs share. No, the LOR occurred during boot. DES --=20 Dag-Erling Sm=C3=B8rgrav - des@des.no
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