share_pool: Add compact switch for vmalloc_huge* funcs

ascend inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4EUVI
CVE: NA

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Let memory compact to be configurable.
Signed-off-by: NTang Yizhou <tangyizhou@huawei.com>
Reviewed-by: NWeilong Chen <chenweilong@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

mm/share_pool.c

@@ -3226,6 +3226,7 @@ struct page *sp_alloc_pages(struct vm_struct *area, gfp_t mask,
 		noreclaim_flag = memalloc_noreclaim_save();
 		page = hugetlb_alloc_hugepage(NUMA_NO_NODE, HUGETLB_ALLOC_NONE);
 		memalloc_noreclaim_restore(noreclaim_flag);
+		sp_try_to_compact();
 		return page;
 	} else
 		return alloc_pages_node(node, mask, page_order);