[PATCH v2 4/4] mm/memory_hotplug: Drop unnecessary checks from register_mem_sect_under_node

From: osalvador
Date: Fri Jun 22 2018 - 07:20:07 EST


From: Oscar Salvador <osalvador@xxxxxxx>

Callers of register_mem_sect_under_node() are always passing a valid
memory_block (not NULL), so we can safely drop the check for NULL.

In the same way, register_mem_sect_under_node() is only called in case
the node is online, so we can safely remove that check as well.

Signed-off-by: Oscar Salvador <osalvador@xxxxxxx>
Reviewed-by: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx>
---
drivers/base/node.c | 5 -----
1 file changed, 5 deletions(-)

diff --git a/drivers/base/node.c b/drivers/base/node.c
index 845d5523812b..1ac4c36e13bb 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -404,12 +404,7 @@ int register_mem_sect_under_node(struct memory_block *mem_blk, void *arg)
int ret, nid = *(int *)arg;
unsigned long pfn, sect_start_pfn, sect_end_pfn;

- if (!mem_blk)
- return -EFAULT;
-
mem_blk->nid = nid;
- if (!node_online(nid))
- return 0;

sect_start_pfn = section_nr_to_pfn(mem_blk->start_section_nr);
sect_end_pfn = section_nr_to_pfn(mem_blk->end_section_nr);
--
2.13.6