mm/sparse: remove index_init_lock

[karo-tx-linux.git] / mm / sparse.c

diff --git a/mm/sparse.c b/mm/sparse.c
index 42ca0ea9af1bbba98336ad8016da0fdb0a532dc8..fac95f2888f2d1fbe923fd83ff7d43786ac89c58 100644 (file)
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -77,7 +77,6 @@ static struct mem_section noinline __init_refok *sparse_index_alloc(int nid)
 
 static int __meminit sparse_index_init(unsigned long section_nr, int nid)
 {
-       static DEFINE_SPINLOCK(index_init_lock);
        unsigned long root = SECTION_NR_TO_ROOT(section_nr);
        struct mem_section *section;
        int ret = 0;
@@ -88,20 +87,9 @@ static int __meminit sparse_index_init(unsigned long section_nr, int nid)
        section = sparse_index_alloc(nid);
        if (!section)
                return -ENOMEM;
-       /*
-        * This lock keeps two different sections from
-        * reallocating for the same index
-        */
-       spin_lock(&index_init_lock);
-
-       if (mem_section[root]) {
-               ret = -EEXIST;
-               goto out;
-       }
 
        mem_section[root] = section;
-out:
-       spin_unlock(&index_init_lock);
+
        return ret;
 }
 #else /* !SPARSEMEM_EXTREME */