Commit 7567cfc5 authored by Baoquan He's avatar Baoquan He Committed by Linus Torvalds

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The code comment above sparse_add_one_section() is obsolete and incorrect.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.comSigned-off-by: default avatarBaoquan He <bhe@redhat.com>
Acked-by: default avatarMichal Hocko <mhocko@suse.com>
Reviewed-by: default avatarOscar Salvador <osalvador@suse.de>
Reviewed-by: default avatarMukesh Ojha <mojha@codeaurora.org>
Reviewed-by: default avatarMike Rapoport <rppt@linux.ibm.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 926e5d1c
...@@ -684,10 +684,18 @@ static void free_map_bootmem(struct page *memmap) ...@@ -684,10 +684,18 @@ static void free_map_bootmem(struct page *memmap)
#endif /* CONFIG_MEMORY_HOTREMOVE */ #endif /* CONFIG_MEMORY_HOTREMOVE */
#endif /* CONFIG_SPARSEMEM_VMEMMAP */ #endif /* CONFIG_SPARSEMEM_VMEMMAP */
/* /**
* returns the number of sections whose mem_maps were properly * sparse_add_one_section - add a memory section
* set. If this is <=0, then that means that the passed-in * @nid: The node to add section on
* map was not consumed and must be freed. * @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, int __meminit sparse_add_one_section(int nid, unsigned long start_pfn,
struct vmem_altmap *altmap) struct vmem_altmap *altmap)
......
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