mm/memblock: WARN_ON when nid differs from overlap region
Each memblock_region has nid to indicates the Node ID of this range. For the overlap case, memblock_add_range() inserts the lower part and leave the upper part as indicated in the overlapped region. If the nid of the new range differs from the overlapped region, the information recorded is not correct. This patch adds a WARN_ON when the nid of the new range differs from the overlapped region. Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com> Acked-by: David Rientjes <rientjes@google.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -566,6 +566,9 @@ repeat:
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* area, insert that portion.
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* area, insert that portion.
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*/
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*/
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if (rbase > base) {
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if (rbase > base) {
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#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
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WARN_ON(nid != memblock_get_region_node(rgn));
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#endif
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nr_new++;
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nr_new++;
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if (insert)
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if (insert)
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memblock_insert_region(type, i++, base,
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memblock_insert_region(type, i++, base,
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