From: Al Viro <viro@zeniv.linux.org.uk>
To: Jeff Layton <jlayton@kernel.org>
Cc: Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
Chuck Lever <chuck.lever@oracle.com>,
Alexander Aring <alex.aring@gmail.com>,
Trond Myklebust <trond.myklebust@hammerspace.com>,
Anna Schumaker <anna@kernel.org>,
Steve French <sfrench@samba.org>,
Paulo Alcantara <pc@manguebit.com>,
Ronnie Sahlberg <ronniesahlberg@gmail.com>,
Shyam Prasad N <sprasad@microsoft.com>,
Tom Talpey <tom@talpey.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
David Howells <dhowells@redhat.com>,
Tyler Hicks <code@tyhicks.com>, Neil Brown <neilb@suse.de>,
Olga Kornievskaia <kolga@netapp.com>,
Dai Ngo <Dai.Ngo@oracle.com>, Miklos Szeredi <miklos@szeredi.hu>,
Amir Goldstein <amir73il@gmail.com>,
Namjae Jeon <linkinjeon@kernel.org>,
Sergey Senozhatsky <senozhatsky@chromium.org>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
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,
netdev@vger.kernel.org
Subject: Re: [PATCH RFC 03/24] vfs: add try_break_deleg calls for parents to vfs_{link,rename,unlink}
Date: Sat, 16 Mar 2024 23:57:17 +0000 [thread overview]
Message-ID: <20240316235717.GI538574@ZenIV> (raw)
In-Reply-To: <20240315-dir-deleg-v1-3-a1d6209a3654@kernel.org>
On Fri, Mar 15, 2024 at 12:52:54PM -0400, Jeff Layton wrote:
> @@ -4603,9 +4606,12 @@ 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);
> - if (!error)
> - error = dir->i_op->link(old_dentry, dir, new_dentry);
> + 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);
> + }
A minor nit: that might be easier to follow as
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);
and let the compiler deal with optimizing it - any C compiler is going to be
able to figure out that one out. vfs_link() is a mix of those styles anyway -
we have
if (!error && (inode->i_state & I_LINKABLE)) {
spin_lock(&inode->i_lock);
inode->i_state &= ~I_LINKABLE;
spin_unlock(&inode->i_lock);
}
immediately afterwards; might as well make that consistent, especially since
you are getting more shallow nesting that way.
next prev parent reply other threads:[~2024-03-17 0:00 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-15 16:52 [PATCH RFC 00/24] vfs, nfsd, nfs: implement directory delegations Jeff Layton
2024-03-15 16:52 ` [PATCH RFC 01/24] filelock: push the S_ISREG check down to ->setlease handlers Jeff Layton
2024-03-15 16:52 ` [PATCH RFC 02/24] filelock: add a lm_set_conflict lease_manager callback Jeff Layton
2024-03-17 14:56 ` Chuck Lever
2024-03-18 11:07 ` Jeff Layton
2024-03-20 13:13 ` Christian Brauner
2024-03-20 13:17 ` Jeff Layton
2024-03-15 16:52 ` [PATCH RFC 03/24] vfs: add try_break_deleg calls for parents to vfs_{link,rename,unlink} Jeff Layton
2024-03-16 23:57 ` Al Viro [this message]
2024-03-17 14:09 ` Jeff Layton
2024-03-15 16:52 ` [PATCH RFC 04/24] vfs: allow mkdir to wait for delegation break on parent Jeff Layton
2024-03-15 16:52 ` [PATCH RFC 05/24] vfs: allow rmdir " Jeff Layton
2024-03-15 16:52 ` [PATCH RFC 06/24] vfs: break parent dir delegations in open(..., O_CREAT) codepath Jeff Layton
2024-03-17 0:19 ` Al Viro
2024-03-17 12:23 ` Jeff Layton
2024-03-18 8:25 ` Stefan Metzmacher
2024-03-18 10:21 ` Jeff Layton
2024-03-15 16:52 ` [PATCH RFC 07/24] vfs: make vfs_create break delegations on parent directory Jeff Layton
2024-03-15 16:52 ` [PATCH RFC 08/24] vfs: make vfs_mknod " Jeff Layton
2024-03-20 13:42 ` Christian Brauner
2024-03-20 20:12 ` Jeff Layton
2024-03-22 14:13 ` Christian Brauner
2024-03-15 16:53 ` [PATCH RFC 09/24] filelock: lift the ban on directory leases in generic_setlease Jeff Layton
2024-03-15 16:53 ` [PATCH RFC 10/24] nfsd: allow filecache to hold S_IFDIR files Jeff Layton
2024-03-15 16:53 ` [PATCH RFC 11/24] nfsd: allow DELEGRETURN on directories Jeff Layton
2024-03-17 15:09 ` Chuck Lever
2024-03-17 16:03 ` Trond Myklebust
2024-03-18 11:22 ` Jeff Layton
2024-03-15 16:53 ` [PATCH RFC 12/24] nfsd: encoders and decoders for GET_DIR_DELEGATION Jeff Layton
2024-03-17 15:34 ` Chuck Lever
2024-03-18 16:12 ` Jeff Layton
2024-03-18 16:19 ` Chuck Lever
2024-03-15 16:53 ` [PATCH RFC 13/24] nfsd: check for delegation conflicts vs. the same client Jeff Layton
2024-03-15 16:53 ` [PATCH RFC 14/24] nfsd: wire up GET_DIR_DELEGATION handling Jeff Layton
2024-03-17 15:42 ` Chuck Lever
2024-03-15 16:53 ` [PATCH RFC 15/24] nfs: fix nfs_stateid_hash prototype when CONFIG_CRC32 isn't set Jeff Layton
2024-03-15 16:53 ` [PATCH RFC 16/24] nfs: remove unused NFS_CALL macro Jeff Layton
2024-03-15 16:53 ` [PATCH RFC 17/24] nfs: add cache_validity to the nfs_inode_event tracepoints Jeff Layton
2024-03-15 16:53 ` [PATCH RFC 18/24] nfs: add a tracepoint to nfs_inode_detach_delegation_locked Jeff Layton
2024-03-15 16:53 ` [PATCH RFC 19/24] nfs: new tracepoint in nfs_delegation_need_return Jeff Layton
2024-03-15 16:53 ` [PATCH RFC 20/24] nfs: new tracepoint in match_stateid operation Jeff Layton
2024-03-15 16:53 ` [PATCH RFC 21/24] nfs: add a GDD_GETATTR rpc operation Jeff Layton
2024-03-15 20:50 ` Anna Schumaker
2024-03-15 21:29 ` Jeff Layton
2024-03-15 16:53 ` [PATCH RFC 22/24] nfs: skip dentry revalidation when parent dir has a delegation Jeff Layton
2024-03-15 16:53 ` [PATCH RFC 23/24] nfs: optionally request a delegation on GETATTR Jeff Layton
2024-03-15 16:53 ` [PATCH RFC 24/24] nfs: add a module parameter to disable directory delegations Jeff Layton
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