From: Jan Kara <jack@suse.cz>
To: Jeff Layton <jlayton@kernel.org>
Cc: Miklos Szeredi <miklos@szeredi.hu>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
Chuck Lever <chuck.lever@oracle.com>,
Alexander Aring <alex.aring@gmail.com>,
Trond Myklebust <trondmy@kernel.org>,
Anna Schumaker <anna@kernel.org>,
Steve French <sfrench@samba.org>,
Paulo Alcantara <pc@manguebit.org>,
Ronnie Sahlberg <ronniesahlberg@gmail.com>,
Shyam Prasad N <sprasad@microsoft.com>,
Tom Talpey <tom@talpey.com>,
Bharath SM <bharathsm@microsoft.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Danilo Krummrich <dakr@kernel.org>,
David Howells <dhowells@redhat.com>,
Tyler Hicks <code@tyhicks.com>, NeilBrown <neil@brown.name>,
Olga Kornievskaia <okorniev@redhat.com>,
Dai Ngo <Dai.Ngo@oracle.com>,
Amir Goldstein <amir73il@gmail.com>,
Namjae Jeon <linkinjeon@kernel.org>,
Steve French <smfrench@gmail.com>,
Sergey Senozhatsky <senozhatsky@chromium.org>,
Carlos Maiolino <cem@kernel.org>,
Kuniyuki Iwashima <kuniyu@google.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>,
Paolo Abeni <pabeni@redhat.com>, Simon Horman <horms@kernel.org>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-nfs@vger.kernel.org, linux-cifs@vger.kernel.org,
samba-technical@lists.samba.org, netfs@lists.linux.dev,
ecryptfs@vger.kernel.org, linux-unionfs@vger.kernel.org,
linux-xfs@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: [PATCH 03/13] vfs: add try_break_deleg calls for parents to vfs_{link,rename,unlink}
Date: Mon, 20 Oct 2025 11:38:14 +0200 [thread overview]
Message-ID: <n5ihwvsits3u7fwvzuk42vmqdv45ap6u4gh77diegtxik42emp@whyfqmynxnl2> (raw)
In-Reply-To: <20251013-dir-deleg-ro-v1-3-406780a70e5e@kernel.org>
On Mon 13-10-25 10:48:01, Jeff Layton wrote:
> In order to add directory delegation support, we need to break
> delegations on the parent whenever there is going to be a change in the
> directory.
>
> vfs_link, vfs_unlink, and vfs_rename all have existing delegation break
> handling for the children in the rename. Add the necessary calls for
> breaking delegations in the parent(s) as well.
>
> Signed-off-by: Jeff Layton <jlayton@kernel.org>
Looks good. Feel free to add:
Reviewed-by: Jan Kara <jack@suse.cz>
Honza
> ---
> fs/namei.c | 15 ++++++++++++++-
> 1 file changed, 14 insertions(+), 1 deletion(-)
>
> diff --git a/fs/namei.c b/fs/namei.c
> index 7377020a2cba02501483020e0fc93c279fb38d3e..6e61e0215b34134b1690f864e2719e3f82cf71a8 100644
> --- a/fs/namei.c
> +++ b/fs/namei.c
> @@ -4667,6 +4667,9 @@ int vfs_unlink(struct mnt_idmap *idmap, struct inode *dir,
> else {
> error = security_inode_unlink(dir, dentry);
> if (!error) {
> + error = try_break_deleg(dir, delegated_inode);
> + if (error)
> + goto out;
> error = try_break_deleg(target, delegated_inode);
> if (error)
> goto out;
> @@ -4936,7 +4939,9 @@ int vfs_link(struct dentry *old_dentry, struct mnt_idmap *idmap,
> else if (max_links && inode->i_nlink >= max_links)
> error = -EMLINK;
> else {
> - error = try_break_deleg(inode, delegated_inode);
> + error = try_break_deleg(dir, delegated_inode);
> + if (!error)
> + error = try_break_deleg(inode, delegated_inode);
> if (!error)
> error = dir->i_op->link(old_dentry, dir, new_dentry);
> }
> @@ -5203,6 +5208,14 @@ int vfs_rename(struct renamedata *rd)
> old_dir->i_nlink >= max_links)
> goto out;
> }
> + error = try_break_deleg(old_dir, delegated_inode);
> + if (error)
> + goto out;
> + if (new_dir != old_dir) {
> + error = try_break_deleg(new_dir, delegated_inode);
> + if (error)
> + goto out;
> + }
> if (!is_dir) {
> error = try_break_deleg(source, delegated_inode);
> if (error)
>
> --
> 2.51.0
>
--
Jan Kara <jack@suse.com>
SUSE Labs, CR
next prev parent reply other threads:[~2025-10-20 9:38 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-13 14:47 [PATCH 00/13] vfs: recall-only directory delegations for knfsd Jeff Layton
2025-10-13 14:47 ` [PATCH 01/13] filelock: push the S_ISREG check down to ->setlease handlers Jeff Layton
2025-10-14 5:37 ` NeilBrown
2025-10-14 11:07 ` Jeff Layton
2025-10-13 14:48 ` [PATCH 02/13] filelock: add a lm_may_setlease lease_manager callback Jeff Layton
2025-10-14 5:34 ` NeilBrown
2025-10-14 11:10 ` Jeff Layton
2025-10-14 22:10 ` NeilBrown
2025-10-15 11:35 ` Jeff Layton
2025-10-13 14:48 ` [PATCH 03/13] vfs: add try_break_deleg calls for parents to vfs_{link,rename,unlink} Jeff Layton
2025-10-20 9:38 ` Jan Kara [this message]
2025-10-13 14:48 ` [PATCH 04/13] vfs: allow mkdir to wait for delegation break on parent Jeff Layton
2025-10-20 9:38 ` Jan Kara
2025-10-13 14:48 ` [PATCH 05/13] vfs: allow rmdir " Jeff Layton
2025-10-20 9:38 ` Jan Kara
2025-10-13 14:48 ` [PATCH 06/13] vfs: break parent dir delegations in open(..., O_CREAT) codepath Jeff Layton
2025-10-20 9:38 ` Jan Kara
2025-10-13 14:48 ` [PATCH 07/13] vfs: make vfs_create break delegations on parent directory Jeff Layton
2025-10-13 20:33 ` Jeff Layton
2025-10-20 9:38 ` Jan Kara
2025-10-13 14:48 ` [PATCH 08/13] vfs: make vfs_mknod " Jeff Layton
2025-10-20 9:38 ` Jan Kara
2025-10-13 14:48 ` [PATCH 09/13] filelock: lift the ban on directory leases in generic_setlease Jeff Layton
2025-10-13 14:48 ` [PATCH 10/13] nfsd: allow filecache to hold S_IFDIR files Jeff Layton
2025-10-14 5:45 ` NeilBrown
2025-10-13 14:48 ` [PATCH 11/13] nfsd: allow DELEGRETURN on directories Jeff Layton
2025-10-13 14:48 ` [PATCH 12/13] nfsd: check for delegation conflicts vs. the same client Jeff Layton
2025-10-14 5:48 ` NeilBrown
2025-10-13 14:48 ` [PATCH 13/13] nfsd: wire up GET_DIR_DELEGATION handling Jeff Layton
2025-10-13 14:52 ` [PATCH 00/13] vfs: recall-only directory delegations for knfsd Chuck Lever
2025-10-13 15:26 ` Jeff Layton
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