[PATCH] sparsemem extreme: hotplug preparation

[PATCH] sparsemem extreme: hotplug preparation

This splits up sparse_index_alloc() into two pieces.  This is needed
because we'll allocate the memory for the second level in a different place
from where we actually consume it to keep the allocation from happening
underneath a lock

Signed-off-by: Dave Hansen <[email protected]>
Signed-off-by: Bob Picco <[email protected]>
Cc: Andy Whitcroft <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>