X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=mm%2Fsparse.c;h=fd13166949b52c81e725fdda3b413516aa251fe3;hb=e49c8547fb940982a04c98377bf5468a3b4a3fd4;hp=56e057c432f9663439c4cfd38f8cad8f2e6e2c3d;hpb=23c970608a0931b913f96f6117ea3e9e1bc06959;p=linux.git

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)