From 7567cfc5da9faadbe56dbd65c802b6b828a57d8b Mon Sep 17 00:00:00 2001 From: Baoquan He Date: Mon, 13 May 2019 17:19:32 -0700 Subject: [PATCH] mm/sparse.c: clean up obsolete code comment The code comment above sparse_add_one_section() is obsolete and incorrect. Clean it up and write a new one. Link: http://lkml.kernel.org/r/20190329144250.14315-1-bhe@redhat.com Signed-off-by: Baoquan He Acked-by: Michal Hocko Reviewed-by: Oscar Salvador Reviewed-by: Mukesh Ojha Reviewed-by: Mike Rapoport Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/sparse.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/mm/sparse.c b/mm/sparse.c index 56e057c432f9..fd13166949b5 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -684,10 +684,18 @@ static void free_map_bootmem(struct page *memmap) #endif /* CONFIG_MEMORY_HOTREMOVE */ #endif /* CONFIG_SPARSEMEM_VMEMMAP */ -/* - * returns the number of sections whose mem_maps were properly - * set. If this is <=0, then that means that the passed-in - * map was not consumed and must be freed. +/** + * sparse_add_one_section - add a memory section + * @nid: The node to add section on + * @start_pfn: start pfn of the memory range + * @altmap: device page map + * + * This is only intended for hotplug. + * + * Return: + * * 0 - On success. + * * -EEXIST - Section has been present. + * * -ENOMEM - Out of memory. */ int __meminit sparse_add_one_section(int nid, unsigned long start_pfn, struct vmem_altmap *altmap) -- 2.30.2