[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20240315-dir-deleg-v1-3-a1d6209a3654@kernel.org>
Date: Fri, 15 Mar 2024 12:52:54 -0400
From: Jeff Layton <jlayton@...nel.org>
To: Alexander Viro <viro@...iv.linux.org.uk>,
Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>,
Chuck Lever <chuck.lever@...cle.com>,
Alexander Aring <alex.aring@...il.com>,
Trond Myklebust <trond.myklebust@...merspace.com>,
Anna Schumaker <anna@...nel.org>, Steve French <sfrench@...ba.org>,
Paulo Alcantara <pc@...guebit.com>,
Ronnie Sahlberg <ronniesahlberg@...il.com>,
Shyam Prasad N <sprasad@...rosoft.com>, Tom Talpey <tom@...pey.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"Rafael J. Wysocki" <rafael@...nel.org>,
David Howells <dhowells@...hat.com>, Tyler Hicks <code@...icks.com>,
Neil Brown <neilb@...e.de>, Olga Kornievskaia <kolga@...app.com>,
Dai Ngo <Dai.Ngo@...cle.com>, Miklos Szeredi <miklos@...redi.hu>,
Amir Goldstein <amir73il@...il.com>, Namjae Jeon <linkinjeon@...nel.org>,
Sergey Senozhatsky <senozhatsky@...omium.org>,
"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-nfs@...r.kernel.org, linux-cifs@...r.kernel.org,
samba-technical@...ts.samba.org, netfs@...ts.linux.dev,
ecryptfs@...r.kernel.org, linux-unionfs@...r.kernel.org,
netdev@...r.kernel.org, Jeff Layton <jlayton@...nel.org>
Subject: [PATCH RFC 03/24] vfs: add try_break_deleg calls for parents to
vfs_{link,rename,unlink}
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@...nel.org>
---
fs/namei.c | 20 +++++++++++++++++---
1 file changed, 17 insertions(+), 3 deletions(-)
diff --git a/fs/namei.c b/fs/namei.c
index 9342fa6a38c2..56d3ebed7bac 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -4332,6 +4332,9 @@ 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;
@@ -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);
+ }
}
if (!error && (inode->i_state & I_LINKABLE)) {
@@ -4870,6 +4876,14 @@ 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)
--
2.44.0
Powered by blists - more mailing lists