Commit 4fcab5f4 authored by Wei Yang's avatar Wei Yang Committed by Linus Torvalds

mm/memblock.c: WARN_ON when flags differs from overlap region

Each memblock_region has flags to indicates the type 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 flags of the new range differs from the overlapped region, the
information recorded is not correct.

This patch adds a WARN_ON when the flags of the new range differs from the
overlapped region.
Signed-off-by: default avatarWei Yang <>
Cc: David Rientjes <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent 7f3eb55b
......@@ -569,6 +569,7 @@ int __init_memblock memblock_add_range(struct memblock_type *type,
WARN_ON(nid != memblock_get_region_node(rgn));
WARN_ON(flags != rgn->flags);
if (insert)
memblock_insert_region(type, i++, base,
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment