fs: mount_notify.c: fix build without CONFIG_FSINFO

Fix mount_notify.c build errors when CONFIG_FSINFO is not set/enabled:

../fs/mount_notify.c:94:28: error: 'struct mount' has no member named 'mnt_unique_id'; did you mean 'mnt_group_id'?
../fs/mount_notify.c:109:28: error: 'struct mount' has no member named 'mnt_unique_id'; did you mean 'mnt_group_id'?

[DH: Fix this to use mnt_id if CONFIG_FSINFO=n rather than not setting
anything]

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
1 file changed