GFS2: use kmalloc for lvb bitmap

The temp lvb bitmap was on the stack, which could
be an alignment problem for __set_bit_le.  Use
kmalloc for it instead.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 156e42e..5c29216 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -588,6 +588,7 @@
 	struct dlm_lksb ls_control_lksb; /* control_lock */
 	char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */
 	struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */
+	char *ls_lvb_bits;
 
 	spinlock_t ls_recover_spin; /* protects following fields */
 	unsigned long ls_recover_flags; /* DFL_ */