mm/memory_hotplug.c: drop unnecessary checks from register_mem_sect_under_node()
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. Link: http://lkml.kernel.org/r/20180622111839.10071-5-osalvador@techadventures.net Signed-off-by: Oscar Salvador <osalvador@suse.de> Reviewed-by: Pavel Tatashin <pasha.tatashin@oracle.com> Tested-by: Reza Arbab <arbab@linux.vnet.ibm.com> Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Pasha Tatashin <Pavel.Tatashin@microsoft.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -404,12 +404,7 @@ int register_mem_sect_under_node(struct memory_block *mem_blk, void *arg)
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int ret, nid = *(int *)arg;
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unsigned long pfn, sect_start_pfn, sect_end_pfn;
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if (!mem_blk)
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return -EFAULT;
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mem_blk->nid = nid;
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if (!node_online(nid))
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return 0;
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sect_start_pfn = section_nr_to_pfn(mem_blk->start_section_nr);
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sect_end_pfn = section_nr_to_pfn(mem_blk->end_section_nr);
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