CVS commit: [netbsd-4] src/sys/fs/msdosfs

[Jeff Rizzo <riz%netbsd.org@localhost>]

Module Name:    src
Committed By:   riz
Date:           Fri Feb  1 14:50:27 UTC 2008

Modified Files:
        src/sys/fs/msdosfs [netbsd-4]: msdosfs_vnops.c

Log Message:
Pull up following revision(s) (requested by pooka in ticket #1007):
        sys/fs/msdosfs/msdosfs_vnops.c: revision 1.43
Fix a problem noticed by Reinoud: the fs would try to release an
unlocked vnode when trying to rename a directory.  The fix was to
shuffle some bits around and #pray.
The rename routine actually needs a very very major wide-angle whopping:
 * it takes locks out-of-order
 * it deals with references from SAVESTART lookups in interesting ways
 * I doubt there is any guarantee for correct operation if there
   are multiple concurrent accesses
 * the error branches might just as well call panic() directly


To generate a diff of this commit:
cvs rdiff -r1.34.2.1 -r1.34.2.2 src/sys/fs/msdosfs/msdosfs_vnops.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.