[PATCH 5/5] mm/sparse: return 0 if root mem_section exists
From: Gavin Shan <hidden>
Date: 2012-06-23 15:54:11
Subsystem:
memory management, memory management - core, the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
Function sparse_index_init() is used to setup memory section descriptors dynamically. zero should be returned while mem_section[root] already has been allocated. Signed-off-by: Gavin Shan <redacted> --- mm/sparse.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/mm/sparse.c b/mm/sparse.c
index a8b99d3..e845a48 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c@@ -109,8 +109,12 @@ static int __meminit sparse_index_init(unsigned long section_nr, int nid) struct mem_section *section; int ret = 0; + /* + * If the corresponding mem_section descriptor + * has been created, we needn't bother + */ if (mem_section[root]) - return -EEXIST; + return ret; section = sparse_index_alloc(nid); if (!section)
--
1.7.9.5
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