vfs_domount_update(): postpone setting MNT_UNION until VFS_MOUNT() is doneHEADmain

The file system that handles updating the mount point might do lookups
during the update, in which case it could find the flag MNT_UNION set on
the mp while mount point is still not updated.  In particular, the
rootvp->v_mount->mnt_vnodecovered is not yet set.

Delay setting MNT_UNION until the mount is performed.

PR:	265311
Reported by:	Robert Morris <rtm@lcs.mit.edu>
Reviewed by:	mckusick, olce
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D45208

0 files changed, 0 insertions, 0 deletions