There's a clear subfunctionality of reconnecting a given dentry to the main
dentry tree in find_exported_dentry, that can be called both for the dentry
we're looking for or it's parent directory.
This patch splits the subfunctionality out into a separate helper to make the
code more readable and document it's intent. As a nice side-optimization we
can avoid getting a superfluous dentry reference count in the case we need to
reconnect a directory on it's own.
Signed-off-by: Christoph Hellwig <firstname.lastname@example.org>
Signed-off-by: Neil Brown <email@example.com>
Signed-off-by: Andrew Morton <firstname.lastname@example.org>
Signed-off-by: Linus Torvalds <email@example.com>