git: DragonFly_RELEASE_4_6 kernel - Fix mountctl() / unmount race

[Matthew Dillon]

commit 5799c0274e83b656b70f531bb9f3827c01219814
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Mon Jul 25 11:31:04 2016 -0700

    kernel - Fix mountctl() / unmount race
    
    * kern_mountctl() now properly checks to see if an unmount is in-progress
      and returns an error, fixing a later panic.

Summary of changes:
 sys/kern/vfs_syscalls.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/5799c0274e83b656b70f531bb9f3827c01219814


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