mm/hugetlb: remove unnecessary VM_BUG_ON_PAGE on putback_active_hugepage()

All callers know they are operating on a hugetlb head page.  So this
VM_BUG_ON_PAGE can not catch anything useful.

Link: https://lkml.kernel.org/r/20210209071151.44731-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 4c956e6..ddfd1f9 100644 (file)
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -5622,7 +5622,6 @@ unlock:
 
 void putback_active_hugepage(struct page *page)
 {
-       VM_BUG_ON_PAGE(!PageHead(page), page);
        spin_lock(&hugetlb_lock);
        set_page_huge_active(page);
        list_move_tail(&page->lru, &(page_hstate(page))->hugepage_activelist);