CVS commit: src/sys/kern

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Fri Oct 12 02:37:21 UTC 2012

Modified Files:
        src/sys/kern: vfs_syscalls.c

Log Message:
Disentangle do_sys_rename.

Elide the fs-wide rename lock for single-directory renames.  This
required changing the order of lookups, so that we know what the
directories are before we lock the nodes.

Clean up error branches, explain why various nonsense happens and
what it does and doesn't do, and note some of what needs to change.


To generate a diff of this commit:
cvs rdiff -u -r1.457 -r1.458 src/sys/kern/vfs_syscalls.c

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