gfs2: Fix possible fs name overflows

This patch fixes three places in which temporary character buffers
could overflow due to the addition of the file system id from patch
3792ce973f07. Thanks to Dan Carpenter for pointing it out.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
3 files changed