Date: Mon, 22 Jan 2007 11:53:50 +0000 (UTC) From: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> To: Konstantin Belousov <kib@FreeBSD.org> Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/fs/deadfs dead_vnops.c src/sys/kern vfs_lookup.c Message-ID: <20070122115230.J82671@maildrop.int.zabbadoz.net> In-Reply-To: <200701221125.l0MBPMS4041567@repoman.freebsd.org> References: <200701221125.l0MBPMS4041567@repoman.freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Mon, 22 Jan 2007, Konstantin Belousov wrote: > kib 2007-01-22 11:25:22 UTC > > FreeBSD src repository > > Modified files: > sys/fs/deadfs dead_vnops.c > sys/kern vfs_lookup.c > Log: > Below is slightly edited description of the LOR by Tor Egge: > > -------------------------- > [Deadlock] is caused by a lock order reversal in vfs_lookup(), where > [some] process is trying to lock a directory vnode, that is the parent > directory of covered vnode) while holding an exclusive vnode lock on > covering vnode. > .... > To fix the LOR, ups@ noted that when crossing the mount point, ni_dvp > is actually not used by the callers of namei. Thus, placeholder deadfs > vnode vp_crossmp is introduced that is filled into ni_dvp. which of the LOR #s on "The LOR page" can be marked "patched" with this commit? http://sources.zabbadoz.net/freebsd/lor.html -- Bjoern A. Zeeb bzeeb at Zabbadoz dot NeT
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20070122115230.J82671>