From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 0569813B7AE for ; Fri, 20 Feb 2026 00:55:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771548902; cv=none; b=IIrWjBSeAGMJiStJrIJpCxTzU5IKTMAC2J46KW/ZdwJCzsj6+tMO7sqvvf484H9ce0E7COazMDj+T2TnpFthImehbCWsBfgI9v8Yg3YfymKkIDUOGgsH4LwuEW+8UZc7U5qeLK7G+HA2MwLVpcscimowbxCFBQJE0QpOdGAbX9M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771548902; c=relaxed/simple; bh=JMNyxXoOiMPnQgMW5E0AylT5VF3um4ntyzRQQkNvHBQ=; h=Date:To:From:Subject:Message-Id; b=O1REBfIXdaHtBWMXVrIrujM9eHx8Z7J2Scqmu3x1Ktn8ApdgJW62tXGr/RmW6O605K95yTqMigNd+15294cyT7WY6YEF8JJiWX9URmKljQOCHNS8Kwt/IV/2gVUKpc5i9rvM/HPtcKIyMQHrwc7ih3WTuQD9WpvOEsimvsJf7AE= 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=lUI8NEhW; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="lUI8NEhW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7D6DFC4CEF7; Fri, 20 Feb 2026 00:55:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1771548901; bh=JMNyxXoOiMPnQgMW5E0AylT5VF3um4ntyzRQQkNvHBQ=; h=Date:To:From:Subject:From; b=lUI8NEhWc+quH7J4Q9R5bXkvdDwZN8FURT3u6SXoKduLLyPuYEzIDWcolGMHEcjCD qlygPAxA1mrnI8E50aKwkZj2b4xnGpKrQMCuU1aSDHjxprKJLodyOowKzp0Myo9JVC X0HFWdJond8r2WdG701Z4F902eutmjoDcLJMK/fA= Date: Thu, 19 Feb 2026 16:55:00 -0800 To: mm-commits@vger.kernel.org,skhawaja@google.com,rppt@kernel.org,pasha.tatashin@soleen.com,jgg@nvidia.com,hughd@google.com,graf@amazon.com,baolin.wang@linux.alibaba.com,pratyush@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + memfd-export-memfd_addget_seals.patch added to mm-new branch Message-Id: <20260220005501.7D6DFC4CEF7@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: memfd: export memfd_{add,get}_seals() has been added to the -mm mm-new branch. Its filename is memfd-export-memfd_addget_seals.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/memfd-export-memfd_addget_seals.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 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: "Pratyush Yadav (Google)" Subject: memfd: export memfd_{add,get}_seals() Date: Mon, 16 Feb 2026 19:59:32 +0100 Patch series "mm: memfd_luo: preserve file seals", v2. This series adds support for preserving file seals when preserving a memfd using LUO. Patch 1 exports some memfd seal manipulation functions and patch 2 adds support for preserving them. Since it makes changes to the serialized data structure for memfd, it also bumps the version number. This patch (of 2): Support for preserving file seals will be added to memfd preservation using the Live Update Orchestrator (LUO). Export memfd_{add,get}_seals)() so memfd_luo can use them to manipulate the seals. Link: https://lkml.kernel.org/r/20260216185946.1215770-1-pratyush@kernel.org Link: https://lkml.kernel.org/r/20260216185946.1215770-2-pratyush@kernel.org Signed-off-by: Pratyush Yadav (Google) Acked-by: Mike Rapoport (Microsoft) Tested-by: Samiullah Khawaja Cc: Alexander Graf Cc: Baolin Wang Cc: Hugh Dickins Cc: Jason Gunthorpe Cc: Pasha Tatashin Signed-off-by: Andrew Morton --- include/linux/memfd.h | 12 ++++++++++++ mm/memfd.c | 4 ++-- 2 files changed, 14 insertions(+), 2 deletions(-) --- a/include/linux/memfd.h~memfd-export-memfd_addget_seals +++ a/include/linux/memfd.h @@ -18,6 +18,8 @@ struct folio *memfd_alloc_folio(struct f */ int memfd_check_seals_mmap(struct file *file, vm_flags_t *vm_flags_ptr); struct file *memfd_alloc_file(const char *name, unsigned int flags); +int memfd_get_seals(struct file *file); +int memfd_add_seals(struct file *file, unsigned int seals); #else static inline long memfd_fcntl(struct file *f, unsigned int c, unsigned int a) { @@ -37,6 +39,16 @@ static inline struct file *memfd_alloc_f { return ERR_PTR(-EINVAL); } + +static inline int memfd_get_seals(struct file *file) +{ + return -EINVAL; +} + +static inline int memfd_add_seals(struct file *file, unsigned int seals) +{ + return -EINVAL; +} #endif #endif /* __LINUX_MEMFD_H */ --- a/mm/memfd.c~memfd-export-memfd_addget_seals +++ a/mm/memfd.c @@ -227,7 +227,7 @@ static unsigned int *memfd_file_seals_pt F_SEAL_WRITE | \ F_SEAL_FUTURE_WRITE) -static int memfd_add_seals(struct file *file, unsigned int seals) +int memfd_add_seals(struct file *file, unsigned int seals) { struct inode *inode = file_inode(file); unsigned int *file_seals; @@ -309,7 +309,7 @@ unlock: return error; } -static int memfd_get_seals(struct file *file) +int memfd_get_seals(struct file *file) { unsigned int *seals = memfd_file_seals_ptr(file); _ Patches currently in -mm which might be from pratyush@kernel.org are liveupdate-luo_file-remember-retrieve-status.patch memfd-export-memfd_addget_seals.patch mm-memfd_luo-preserve-file-seals.patch