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[100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 3AF8E43FCD; Wed, 4 Mar 2026 16:59:42 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B9FBAC2BCB0; Wed, 4 Mar 2026 16:59:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772643582; bh=Vco3uqMM+GGwamDaSgMVwORJh+OF+HTrP0JVrfOVsPw=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=CXD9BpWgkkINK6gZqwyX5n7YT6eyFHASQ0Cf19QSMh58zX8rxOu5w8xcN+ALcpoiN zbse2DEyA7vWamOUkFLS5cEPnwTisG+hpK4j3y8lhaSnEuoTtnggjrzLnvkaqpuG4Q /pLrkelh2wFBDJe2W+0q8sB/i9CBZKq+1QKdbV2czTHnDvJNKeh8dlDWRQIN1f4Oly wkxfWt/ojpUzF7aYV96/GCDXWlUslEu8HeL4mAwxYbk0tPCb3+ItQ1ysWx6N4nShGq zvEPbwgzgHkxslhDUcJzRX0BNjNVvspwFLrzcRh1590XHX+B39SAGRYWotYwfZVTOL Sc+WO/HYq9qBg== Message-ID: Subject: Re: [PATCH 24/24] fs: remove simple_nosetlease() From: Jeff Layton To: Mike Snitzer Cc: Luis de Bethencourt , Salah Triki , Nicolas Pitre , Christoph Hellwig , Jan Kara , Anders Larsen , Alexander Viro , Christian Brauner , David Sterba , Chris Mason , Gao Xiang , Chao Yu , Yue Hu , Jeffle Xu , Sandeep Dhavale , Hongbo Li , Chunhai Guo , Jan Kara , Theodore Ts'o , Andreas Dilger , Jaegeuk Kim , OGAWA Hirofumi , David Woodhouse , Richard Weinberger , Dave Kleikamp , Ryusuke Konishi , Viacheslav Dubeyko , Konstantin Komarov , Mark Fasheh , Joel Becker , Joseph Qi , Mike Marshall , Martin Brandenburg , Miklos Szeredi , Amir Goldstein , Phillip Lougher , Carlos Maiolino , Hugh Dickins , Baolin Wang , Andrew Morton , Namjae Jeon , Sungjong Seo , Yuezhang Mo , Chuck Lever , Alexander Aring , Andreas Gruenbacher , Jonathan Corbet , "Matthew Wilcox (Oracle)" , Eric Van Hensbergen , Latchesar Ionkov , Dominique Martinet , Christian Schoenebeck , Xiubo Li , Ilya Dryomov , Trond Myklebust , Anna Schumaker , Steve French , Paulo Alcantara , Ronnie Sahlberg , Shyam Prasad N , Tom Talpey , Bharath SM , Hans de Goede , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-mtd@lists.infradead.org, jfs-discussion@lists.sourceforge.net, linux-nilfs@vger.kernel.org, ntfs3@lists.linux.dev, ocfs2-devel@lists.linux.dev, devel@lists.orangefs.org, linux-unionfs@vger.kernel.org, linux-xfs@vger.kernel.org, linux-mm@kvack.org, gfs2@lists.linux.dev, linux-doc@vger.kernel.org, v9fs@lists.linux.dev, ceph-devel@vger.kernel.org, linux-nfs@vger.kernel.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org Date: Wed, 04 Mar 2026 11:59:32 -0500 In-Reply-To: References: <20260108-setlease-6-20-v1-0-ea4dec9b67fa@kernel.org> <20260108-setlease-6-20-v1-24-ea4dec9b67fa@kernel.org> Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; keydata=mQINBE6V0TwBEADXhJg7s8wFDwBMEvn0qyhAnzFLTOCHooMZyx7XO7dAiIhDSi7G1NPxw n8jdFUQMCR/GlpozMFlSFiZXiObE7sef9rTtM68ukUyZM4pJ9l0KjQNgDJ6Fr342Htkjxu/kFV1Wv 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X-Rspamd-Server: rspam07 X-Stat-Signature: bpkkfqzismcpbdoi1d9t15xgzwfjk3zw X-Rspam-User: X-HE-Tag: 1772643583-229370 X-HE-Meta: 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 11cxxJLM f6SqNw40gK3zixE41Yn7GH0WyDUu2zTZlU4/vntvgjHiMKGxVE3FNH7npRq5a3/cs4GyAmDtx7V044dl87Rnn4VVzfCC1CmyL6iz3KkLiiYjqrFOxG13IfWKIQiCtlyoD2iJiUH6QT5LQi/9y8riJfGMZBGVs9TzY+jxxs1j2pKmk+zih/MeLjrxlMOMb6r+swLLQVuchSX9lesxYILFZRObCtpcvkNo8hzhnMItZIvLStZPwicHIFx254bz7cDqmCcjgE7rtt7cgcGKDHEI+A/ZI2UeuGRTtIhacC4+tpSLqW+2Yrk3Na8byHMRw+jgwzmtDvroYDk+MjXkniFV0plR7Rivh5dSnkQYd7nXemZW/5MQ= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, 2026-02-25 at 12:58 -0500, Mike Snitzer wrote: > On Thu, Jan 08, 2026 at 12:13:19PM -0500, Jeff Layton wrote: > > Setting ->setlease() to a NULL pointer now has the same effect as > > setting it to simple_nosetlease(). Remove all of the setlease > > file_operations that are set to simple_nosetlease, and the function > > itself. > >=20 > > Signed-off-by: Jeff Layton > > --- > > fs/9p/vfs_dir.c | 2 -- > > fs/9p/vfs_file.c | 2 -- > > fs/ceph/dir.c | 2 -- > > fs/ceph/file.c | 1 - > > fs/fuse/dir.c | 1 - > > fs/gfs2/file.c | 2 -- > > fs/libfs.c | 18 ------------------ > > fs/nfs/dir.c | 1 - > > fs/nfs/file.c | 1 - > > fs/smb/client/cifsfs.c | 1 - > > fs/vboxsf/dir.c | 1 - > > fs/vboxsf/file.c | 1 - > > include/linux/fs.h | 1 - > > 13 files changed, 34 deletions(-) > >=20 >=20 > >=20 > > diff --git a/fs/libfs.c b/fs/libfs.c > > index 697c6d5fc12786c036f0086886297fb5cd52ae00..f1860dff86f2703266beecf= 31e9d2667af7a9684 100644 > > --- a/fs/libfs.c > > +++ b/fs/libfs.c > > @@ -1699,24 +1699,6 @@ struct inode *alloc_anon_inode(struct super_bloc= k *s) > > } > > EXPORT_SYMBOL(alloc_anon_inode); > > =20 > > -/** > > - * simple_nosetlease - generic helper for prohibiting leases > > - * @filp: file pointer > > - * @arg: type of lease to obtain > > - * @flp: new lease supplied for insertion > > - * @priv: private data for lm_setup operation > > - * > > - * Generic helper for filesystems that do not wish to allow leases to = be set. > > - * All arguments are ignored and it just returns -EINVAL. > > - */ > > -int > > -simple_nosetlease(struct file *filp, int arg, struct file_lease **flp, > > - void **priv) > > -{ > > - return -EINVAL; > > -} > > -EXPORT_SYMBOL(simple_nosetlease); > > - > > /** > > * simple_get_link - generic helper to get the target of "fast" symlin= ks > > * @dentry: not used here > > diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c > > index 71df279febf797880ded19e45528c3df4cea2dde..23a78a742b619dea8b76ddf= 28f4f59a1c8a015e2 100644 > > --- a/fs/nfs/dir.c > > +++ b/fs/nfs/dir.c > > @@ -66,7 +66,6 @@ const struct file_operations nfs_dir_operations =3D { > > .open =3D nfs_opendir, > > .release =3D nfs_closedir, > > .fsync =3D nfs_fsync_dir, > > - .setlease =3D simple_nosetlease, > > }; > > =20 > > const struct address_space_operations nfs_dir_aops =3D { > > diff --git a/fs/nfs/file.c b/fs/nfs/file.c > > index d020aab40c64ebda30d130b6acee1b9194621457..9d269561961825f88529551= b0f0287920960ac62 100644 > > --- a/fs/nfs/file.c > > +++ b/fs/nfs/file.c > > @@ -962,7 +962,6 @@ const struct file_operations nfs_file_operations = =3D { > > .splice_read =3D nfs_file_splice_read, > > .splice_write =3D iter_file_splice_write, > > .check_flags =3D nfs_check_flags, > > - .setlease =3D simple_nosetlease, > > .fop_flags =3D FOP_DONTCACHE, > > }; > > EXPORT_SYMBOL_GPL(nfs_file_operations); >=20 > Hey Jeff, >=20 > I've noticed an NFS reexport regression in v6.19 and now v7.0-rc1 > (similar but different due to your series that requires opt-in via > .setlease). >=20 > Bisect first pointed out this commit: > 10dcd5110678 nfs: properly disallow delegation requests on directories >=20 > And now with v7.0-rc1 its the fact that NFS doesn't provide .setlease > so lstat() on parent dir (of file that I touch) gets -EINVAL. >=20 > So its a confluence of NFS's dir delegations and your setlease changes. >=20 > If I reexport NFSv4.2 filesystem in terms of NFSv4.1, the regression > is seen by doing (lstat reproducer that gemini spit out for me is > attached): >=20 > $ touch /mnt/share41/test > $ strace ./lstat /mnt/share41 > ... > lstat("/mnt/share41", 0x7ffec0d79920) =3D -1 EINVAL (Invalid argument) >=20 > If I immediately re-run it works: > ... > lstat("/mnt/share41", {st_mode=3DS_IFDIR|0777, st_size=3D4096, ...}) =3D = 0 >=20 > I'm not sure what the proper fix is yet, but I feel like you've missed > that NFS itself can be (re)exported? >=20 >=20 My apologies. I missed seeing this last week. That's a very simple reproducer! That's very strange behavior, especially since NFS4 does provide a setlease operation: const struct file_operations nfs4_file_operations =3D { [...] .setlease =3D nfs4_setlease, [...] }; I'm not sure why this would cause lstat() to return -EINVAL. What's happening on the wire when this occurs? I'll plan to take a look here soon either way. --=20 Jeff Layton