From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C386B3ACEFE for ; Mon, 20 Jul 2026 05:55:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784526924; cv=none; b=cV1jh2DZNGeNuLAv0SeTCRUe/sdQuN7fFs1qOuu4fVM83X6sWACcHEHdUiaMco7pe/tS0StaohC1iu3yKvzRl2IPLRhhYxzX7d4VuuL+P2WtqNAMINxqaJcwcyHnJuo7EjLp/wWWZUD+P9s1yQcKtdW5tjygj9oQozJMMPwFWFQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784526924; c=relaxed/simple; bh=sy/C1SHKbxIsvjxliV/aviWbDHGs44H3MQ7Zv3HuSOY=; h=Date:To:From:Subject:Message-Id; b=RX5G3WQSriILuGrYjW56biZMGY+ydzToNdrSRcJUX/emlSXpz98K5CemehMdjkSWzlH2pKAYu5avTNB9sqWkGcFjphGud1FAV60M1rV2x6cJpeFUR8rzR05MZjgLveoPstjkLNH9lXGwK5GWE084gVpR9uFDVz3LNqS5RRzNN+4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=SgiKT/UB; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="SgiKT/UB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6BCE41F000E9; Mon, 20 Jul 2026 05:55:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1784526907; bh=OARHM0l69/v79FgMNDYeaZFV5G32HofZVSytQe6AjpM=; h=Date:To:From:Subject; b=SgiKT/UB09dlHOCnRa15q3/SBCIIFR5RrCSWyTKwYI5OIbVbdM4au45sjU9+uecSM 9xYwDBwfDN9Wg/QpM+SB836qhxgiAisfld+d5yfLd6Yo6tqOyWMZtlrrw6NW0Ktk/s BKcRzfwiwkfPy9FDKEuuyaFgWwyugYg24G7onwT4= Date: Sun, 19 Jul 2026 22:55:07 -0700 To: mm-commits@vger.kernel.org,osalvador@suse.de,muchun.song@linux.dev,mike.kravetz@oracle.com,david@kernel.org,chenyichong@uniontech.com,akpm@linux-foundation.org From: Andrew Morton Subject: + hugetlbfs-release-subpool-on-fill_super-failure.patch added to mm-new branch Message-Id: <20260720055507.6BCE41F000E9@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: hugetlbfs: release subpool on fill_super failure has been added to the -mm mm-new branch. Its filename is hugetlbfs-release-subpool-on-fill_super-failure.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/hugetlbfs-release-subpool-on-fill_super-failure.patch This patch will later appear in the mm-new branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Note, mm-new is a provisional staging ground for work-in-progress patches, and acceptance into mm-new is a notification for others take notice and to finish up reviews. Please do not hesitate to respond to review feedback and post updated versions to replace or incrementally fixup patches in mm-new. The mm-new branch of mm.git is not included in linux-next If a few days of testing in mm-new is successful, the patch will me moved into mm.git's mm-unstable branch, which is included in linux-next Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: Yichong Chen 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 Cc: David Hildenbrand Cc: Mike Kravetz Cc: Muchun Song Cc: Oscar Salvador Signed-off-by: Andrew Morton --- 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 tools-mm-page_owner_sort-return-explicit-filter-results.patch tools-mm-page_owner_sort-free-per-record-allocations.patch tools-mm-page_owner_sort-bound-pattern-output-copies.patch hugetlbfs-release-subpool-on-fill_super-failure.patch fat-release-buffer-head-after-rebuilding-parent.patch