[merged mm-stable] hugetlbfs-release-subpool-on-fill_super-failure.patch removed from -mm tree

[merged mm-stable] hugetlbfs-release-subpool-on-fill_super-failure.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: hugetlbfs: release subpool on fill_super failure
has been removed from the -mm tree.  Its filename was
     hugetlbfs-release-subpool-on-fill_super-failure.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: Yichong Chen <chenyichong@uniontech.com>
Subject: hugetlbfs: release subpool on fill_super failure
Date: Mon, 20 Jul 2026 10:18:59 +0800

hugetlbfs_fill_super() allocates a hugepage subpool when size or min_size
mount options are specified.  hugepage_new_subpool() may also reserve huge
pages for min_size.

If root dentry creation fails after the subpool is created, the failure
path frees the subpool with kfree().  This bypasses hugepage_put_subpool()
and can leave min_size reservations charged.

Use hugepage_put_subpool() on the failure path, matching the normal
put_super path.

Link: https://lore.kernel.org/20260720021900.1376309-1-chenyichong@uniontech.com
Fixes: 7ca02d0ae586 ("hugetlbfs: accept subpool min_size mount option and setup accordingly")
Signed-off-by: Yichong Chen <chenyichong@uniontech.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/hugetlbfs/inode.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/fs/hugetlbfs/inode.c~hugetlbfs-release-subpool-on-fill_super-failure
+++ a/fs/hugetlbfs/inode.c
@@ -1419,7 +1419,8 @@ hugetlbfs_fill_super(struct super_block
 		goto out_free;
 	return 0;
 out_free:
-	kfree(sbinfo->spool);
+	if (sbinfo->spool)
+		hugepage_put_subpool(sbinfo->spool);
 	kfree(sbinfo);
 	return -ENOMEM;
 }
_

Patches currently in -mm which might be from chenyichong@uniontech.com are