cvs commit: src/sys/fs/deadfs dead_vnops.c src/sys/kern vfs_lookup.c

Bjoern A. Zeeb bzeeb-lists at
Mon Jan 22 12:17:22 UTC 2007

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?

Bjoern A. Zeeb				bzeeb at Zabbadoz dot NeT

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