linux-kernel - Re: [PATCH v2 0/2] fs: remove support for mandatory locking

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Date:   Fri, 20 Aug 2021 10:09:03 -0400
From:   "J. Bruce Fields" <bfields@...ldses.org>
To:     Jeff Layton <jlayton@...nel.org>
Cc:     torvalds@...ux-foundation.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, ebiederm@...ssion.com,
        david@...hat.com, willy@...radead.org, linux-nfs@...r.kernel.org,
        viro@...iv.linux.org.uk, linux-doc@...r.kernel.org,
        v9fs-developer@...ts.sourceforge.net,
        linux-afs@...ts.infradead.org, cluster-devel@...hat.com,
        ocfs2-devel@....oracle.com, linux-mm@...ck.org,
        akpm@...ux-foundation.org, luto@...nel.org, w@....eu,
        rostedt@...dmis.org
Subject: Re: [PATCH v2 0/2] fs: remove support for mandatory locking

On Fri, Aug 20, 2021 at 09:57:05AM -0400, Jeff Layton wrote:
> The first patch in this series adds a new warning that should pop on
> kernels have mandatory locking enabled when someone mounts a filesystem
> with -o mand. The second patch removes support for mandatory locking
> altogether.
> 
> What I think we probably want to do is apply the first to v5.14 before
> it ships and allow the new warning to trickle out into stable kernels.
> Then we can merge the second patch in v5.15 to go ahead and remove it.
> 
> Sound like a plan?

Sounds good to me.--b.

> 
> Jeff Layton (2):
>   fs: warn about impending deprecation of mandatory locks
>   fs: remove mandatory file locking support
> 
>  .../filesystems/mandatory-locking.rst         | 188 ------------------
>  fs/9p/vfs_file.c                              |  12 --
>  fs/Kconfig                                    |  10 -
>  fs/afs/flock.c                                |   4 -
>  fs/ceph/locks.c                               |   3 -
>  fs/gfs2/file.c                                |   3 -
>  fs/locks.c                                    | 116 +----------
>  fs/namei.c                                    |   4 +-
>  fs/namespace.c                                |  31 +--
>  fs/nfs/file.c                                 |   4 -
>  fs/nfsd/nfs4state.c                           |  13 --
>  fs/nfsd/vfs.c                                 |  15 --
>  fs/ocfs2/locks.c                              |   4 -
>  fs/open.c                                     |   8 +-
>  fs/read_write.c                               |   7 -
>  fs/remap_range.c                              |  10 -
>  include/linux/fs.h                            |  84 --------
>  mm/mmap.c                                     |   6 -
>  mm/nommu.c                                    |   3 -
>  19 files changed, 20 insertions(+), 505 deletions(-)
>  delete mode 100644 Documentation/filesystems/mandatory-locking.rst
> 
> -- 
> 2.31.1