[merged mm-stable] mm-hugetlb-warn-instead-of-silently-bailing-gigantic-pages-without-runtime-support.patch removed from -mm tree

[merged mm-stable] mm-hugetlb-warn-instead-of-silently-bailing-gigantic-pages-without-runtime-support.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm/hugetlb: warn instead of silently bailing gigantic pages without runtime support
has been removed from the -mm tree.  Its filename was
     mm-hugetlb-warn-instead-of-silently-bailing-gigantic-pages-without-runtime-support.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Longlong Xia <xialonglong@kylinos.cn>
Subject: mm/hugetlb: warn instead of silently bailing gigantic pages without runtime support
Date: Sun, 23 Aug 2026 12:40:52 +0800

remove_hugetlb_folio() and __update_and_free_hugetlb_folio() silently
return for gigantic hstates that lack runtime freeing support.  All
callers should already filter such hstates upstream, so turn the silent
bail into a VM_WARN_ON_ONCE to catch caller regressions instead of masking
them.

Link: https://lore.kernel.org/20260823044118.1097121-3-xialonglong2025@163.com
Signed-off-by: Longlong Xia <xialonglong@kylinos.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Muchun Song <muchun.song@linux.dev>
Assisted-by: Codex:gpt-5.6-sol
Cc: David Hildenbrand <david@kernel.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@suse.de>
---

 mm/hugetlb.c |   10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

--- a/mm/hugetlb.c~mm-hugetlb-warn-instead-of-silently-bailing-gigantic-pages-without-runtime-support
+++ a/mm/hugetlb.c
@@ -1396,8 +1396,11 @@ void remove_hugetlb_folio(struct hstate
 	VM_BUG_ON_FOLIO(hugetlb_cgroup_from_folio_rsvd(folio), folio);
 
 	lockdep_assert_held(&hugetlb_lock);
-	if (hstate_is_gigantic_no_runtime(h))
+	if (hstate_is_gigantic_no_runtime(h)) {
+		/* Callers must filter gigantic_no_runtime upstream. */
+		VM_WARN_ON_ONCE(1);
 		return;
+	}
 
 	list_del(&folio->lru);
 
@@ -1458,8 +1461,11 @@ static void __update_and_free_hugetlb_fo
 {
 	bool clear_flag = folio_test_hugetlb_vmemmap_optimized(folio);
 
-	if (hstate_is_gigantic_no_runtime(h))
+	if (hstate_is_gigantic_no_runtime(h)) {
+		/* Callers must filter gigantic_no_runtime upstream. */
+		VM_WARN_ON_ONCE(1);
 		return;
+	}
 
 	/*
 	 * If we don't know which subpages are hwpoisoned, we can't free
_

Patches currently in -mm which might be from xialonglong@kylinos.cn are

mm-zswap-publish-the-initial-pool-with-list_add_rcu.patch
mm-zswap-enable-zswap_ever_enabled-in-zswap_pool_create.patch