mm: bootmem: pass pgdat instead of pgdat->bdata down the stack

Pass down the node descriptor instead of the more specific bootmem node
descriptor down the call stack, like nobootmem does, when there is no good
reason for the two to be different.

Signed-off-by: Johannes Weiner <[e-mail]>
Acked-by: Tejun Heo <[e-mail]>
Acked-by: David S. Miller <[e-mail]>
Cc: Yinghai Lu <[e-mail]>
Cc: Gavin Shan <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

mm/bootmem.c

···
 	return ___alloc_bootmem(size, align, goal, limit);
 }
 
-static void * __init ___alloc_bootmem_node_nopanic(bootmem_data_t *bdata,
+static void * __init ___alloc_bootmem_node_nopanic(pg_data_t *pgdat,
 				unsigned long size, unsigned long align,
 				unsigned long goal, unsigned long limit)
 {
 	void *ptr;
 
 again:
-	ptr = alloc_arch_preferred_bootmem(bdata, size, align, goal, limit);
+	ptr = alloc_arch_preferred_bootmem(pgdat->bdata, size,
+					   align, goal, limit);
 	if (ptr)
 		return ptr;
 
-	ptr = alloc_bootmem_bdata(bdata, size, align, goal, limit);
+	ptr = alloc_bootmem_bdata(pgdat->bdata, size, align, goal, limit);
 	if (ptr)
 		return ptr;
 
···
 	if (WARN_ON_ONCE(slab_is_available()))
 		return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id);
 
-	return ___alloc_bootmem_node_nopanic(pgdat->bdata, size,
-					     align, goal, 0);
+	return ___alloc_bootmem_node_nopanic(pgdat, size, align, goal, 0);
 }
 
-void * __init ___alloc_bootmem_node(bootmem_data_t *bdata, unsigned long size,
+void * __init ___alloc_bootmem_node(pg_data_t *pgdat, unsigned long size,
 				    unsigned long align, unsigned long goal,
 				    unsigned long limit)
 {
 	void *ptr;
 
-	ptr = ___alloc_bootmem_node_nopanic(bdata, size, align, goal, 0);
+	ptr = ___alloc_bootmem_node_nopanic(pgdat, size, align, goal, 0);
 	if (ptr)
 		return ptr;
 
···
 	if (WARN_ON_ONCE(slab_is_available()))
 		return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id);
 
-	return  ___alloc_bootmem_node(pgdat->bdata, size, align, goal, 0);
+	return  ___alloc_bootmem_node(pgdat, size, align, goal, 0);
 }
 
 void * __init __alloc_bootmem_node_high(pg_data_t *pgdat, unsigned long size,
···
 	if (WARN_ON_ONCE(slab_is_available()))
 		return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id);
 
-	return ___alloc_bootmem_node(pgdat->bdata, size, align,
-				goal, ARCH_LOW_ADDRESS_LIMIT);
+	return ___alloc_bootmem_node(pgdat, size, align,
+				     goal, ARCH_LOW_ADDRESS_LIMIT);
 }