mm/memblock: switch to use NUMA_NO_NODE instead of MAX_NUMNODES

It's recommended to use NUMA_NO_NODE everywhere to select "process any
node" behavior or to indicate that "no node id specified".

Hence, update __next_free_mem_range*() API's to accept both NUMA_NO_NODE
and MAX_NUMNODES, but emit warning once on MAX_NUMNODES, and correct
corresponding API's documentation to describe new behavior.  Also,
update other memblock/nobootmem APIs where MAX_NUMNODES is used
dirrectly.

The change was suggested by Tejun Heo.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/mm/nobootmem.c b/mm/nobootmem.c
index 59777e050d09..19121ceb8874 100644
--- a/mm/nobootmem.c
+++ b/mm/nobootmem.c
@@ -117,7 +117,7 @@ static unsigned long __init free_low_memory_core_early(void)
         phys_addr_t start, end, size;
         u64 i;
 
-        for_each_free_mem_range(i, MAX_NUMNODES, &start, &end, NULL)
+        for_each_free_mem_range(i, NUMA_NO_NODE, &start, &end, NULL)
                 count += __free_memory_core(start, end);
 
         /* free range that is used for reserved array if we allocate it */
@@ -161,7 +161,7 @@ unsigned long __init free_all_bootmem(void)
         reset_all_zones_managed_pages();
 
         /*
-         * We need to use MAX_NUMNODES instead of NODE_DATA(0)->node_id
+         * We need to use NUMA_NO_NODE instead of NODE_DATA(0)->node_id
          *  because in some case like Node0 doesn't have RAM installed
          *  low ram will be on Node1
          */
@@ -215,7 +215,7 @@ static void * __init ___alloc_bootmem_nopanic(unsigned long size,
 
 restart:
 
-        ptr = __alloc_memory_core_early(MAX_NUMNODES, size, align, goal, limit);
+        ptr = __alloc_memory_core_early(NUMA_NO_NODE, size, align, goal, limit);
 
         if (ptr)
                 return ptr;
@@ -299,7 +299,7 @@ again:
         if (ptr)
                 return ptr;
 
-        ptr = __alloc_memory_core_early(MAX_NUMNODES, size, align,
+        ptr = __alloc_memory_core_early(NUMA_NO_NODE, size, align,
                                         goal, limit);
         if (ptr)
                 return ptr;