git: nullfs - Improve NFS export FSID

[Matthew Dillon]

commit 1bb7a917f5b8b86fa1f5dbfdfd16dd09f4054233
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Thu Jun 24 10:45:18 2021 -0700

    nullfs - Improve NFS export FSID
    
    * Reduce the chance of collision and improve repeatability by integrating
      a CRC of the mntfromname string with the FSID of the root filesystem
      to generate the FSID of a nullfs export.

Summary of changes:
 sys/vfs/nullfs/null_vfsops.c | 37 ++++++++++++++++++++++++++++++++-----
 1 file changed, 32 insertions(+), 5 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/1bb7a917f5b8b86fa1f5dbfdfd16dd09f4054233


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