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| author |   Baoquan He <bhe@redhat.com> | 2019-05-13 17:19:32 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-14 09:47:48 -0700 |
| commit | 7567cfc5da9faadbe56dbd65c802b6b828a57d8b (patch) | |
| tree | a13064dc730eb8998f854051b578f1d26956a6b5 /mm/sparse.c | |
| parent | include/linux/balloon_compaction.h: drop unused function stubs (diff) | |
| download | linux-dev-7567cfc5da9faadbe56dbd65c802b6b828a57d8b.tar.xz linux-dev-7567cfc5da9faadbe56dbd65c802b6b828a57d8b.zip | |
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The code comment above sparse_add_one_section() is obsolete and incorrect.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 <bhe@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/sparse.c')
| -rw-r--r-- | mm/sparse.c | 16 |
1 files 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) |