memblock: introduce MEMBLOCK_RSRV_NOINIT flag

For reserved memory regions marked with this flag, reserve_bootmem_region
is not called during memmap_init_reserved_pages.  This can be used to
avoid struct page initialization for regions which won't need them, for
e.g.  hugepages with Hugepage Vmemmap Optimization enabled.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Usama Arif <[email protected]>
Acked-by: Muchun Song <[email protected]>
Reviewed-by: Mike Rapoport (IBM) <[email protected]>
Cc: Fam Zheng <[email protected]>
Cc: Mike Kravetz <[email protected]>
Cc: Punit Agrawal <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions