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[100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id C4A5E41724; Thu, 5 Mar 2026 19:25:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 35D37C116C6; Thu, 5 Mar 2026 19:25:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772738752; bh=vmlzEK3fLdHi0cfmhsSQFqvNzFA4ibJrsdtaMQ6FsMM=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=TGM2saNldwviAIDLOQ1P8x7SOFo+tMXmvPb99Ysn3VNHwOFLT0Dhkqu45iWUuL7z3 LyYZ7qS4ipT3j1fgXJruoVMe0lYMx2J113EB9Q7XnMqjXPyaKkftQdmBZZDxeK/try VucQb2bczVK5Sy8w3LwHGwLHaz4q3c5zROVLu1JLYdaPjrfO6jLrmxU9WuGDL0e1LI sHnQE0ur6k+hc/akW5Ahil4lbe5t0rsnVRm5eLw8o0eC57sRaPKJgWj6ayg0q4hDq0 UIBUEOcDE/heTYNO07ncOYaV2Qsqr/pzwPBkNzbenDaZRszh71tzddVIzBoAx0CRXU b/biJfAV4c7KQ== 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: Thu, 05 Mar 2026 14:25:42 -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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c8zdmquq4yhssxafioubpxw8enstjind X-Rspamd-Server: rspam09 X-Rspam-User: X-Rspamd-Queue-Id: C4B7B4000B X-HE-Tag: 1772738753-555075 X-HE-Meta: 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 pWVJ5Xyv /FbH1swNAH2Pm/pFUWla7tUYzOJXXIV2gXhEt8tojFLNhnIc= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, 2026-03-04 at 17:29 -0500, Mike Snitzer wrote: > On Wed, Mar 04, 2026 at 11:59:32AM -0500, Jeff Layton wrote: > > 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..f1860dff86f2703266b= eecf31e9d2667af7a9684 100644 > > > > --- a/fs/libfs.c > > > > +++ b/fs/libfs.c > > > > @@ -1699,24 +1699,6 @@ struct inode *alloc_anon_inode(struct super_= block *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" sy= mlinks > > > > * @dentry: not used here > > > > diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c > > > > index 71df279febf797880ded19e45528c3df4cea2dde..23a78a742b619dea8b7= 6ddf28f4f59a1c8a015e2 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..9d269561961825f8852= 9551b0f0287920960ac62 100644 > > > > --- a/fs/nfs/file.c > > > > +++ b/fs/nfs/file.c > > > > @@ -962,7 +962,6 @@ const struct file_operations nfs_file_operation= s =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 directorie= s > > >=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 change= s. > > >=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 argume= nt) > > >=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 misse= d > > > that NFS itself can be (re)exported? > > >=20 > > >=20 > >=20 > > My apologies. I missed seeing this last week. > >=20 > > That's a very simple reproducer! That's very strange behavior, > > especially since NFS4 does provide a setlease operation: > >=20 > > const struct file_operations nfs4_file_operations =3D { > > [...] > > .setlease =3D nfs4_setlease, > > [...] > > }; >=20 > Huh, not sure how I missed nfs4_setlease... >=20 > > I'm not sure why this would cause lstat() to return -EINVAL. >=20 > Likewise, especially given nfs4_setlease >=20 > > What's happening on the wire when this occurs? > >=20 > > I'll plan to take a look here soon either way. >=20 > I'll have to revisit myself, been a bit. >=20 > Will let you know. >=20 Thanks. I just tested your reproducer. I have a nfsv4.2 mount on one host that is reexported, and mounted the reexport on a different host with "-o vers=3D4.1". It seems to work for me. It's possible I don't have something set up the same way though: $ touch /mnt/scratch/test ; ./lstat /mnt/scratch/test Information for: /mnt/scratch/test --------------------------- File Size: 0 bytes Number of Links: 1 File inode: 272 File Type: Regular File --=20 Jeff Layton