linux-kernel - [PATCH v1 2/3] VFS: Prepare atomic_open() for dentry

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Message-ID: <333c7f8940bd9b14a2311d5e65b6c007e8079966.1763483341.git.bcodding@hammerspace.com>
Date: Tue, 18 Nov 2025 11:33:58 -0500
From: Benjamin Coddington <bcodding@...merspace.com>
To: Alexander Viro <viro@...iv.linux.org.uk>,
	Christian Brauner <brauner@...nel.org>,
	Jan Kara <jack@...e.cz>,
	Chuck Lever <chuck.lever@...cle.com>,
	Jeff Layton <jlayton@...nel.org>,
	NeilBrown <neil@...wn.name>,
	Olga Kornievskaia <okorniev@...hat.com>,
	Dai Ngo <Dai.Ngo@...cle.com>,
	Tom Talpey <tom@...pey.com>
Cc: linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-nfs@...r.kernel.org,
	Trond Myklebust <trondmy@...nel.org>,
	Mike Snitzer <snitzer@...nel.org>
Subject: [PATCH v1 2/3] VFS: Prepare atomic_open() for dentry_create()

The next patch allows dentry_create() to call atomic_open(), but it does
not have fabricated nameidata.  Let atomic_open() take a path instead.

Signed-off-by: Benjamin Coddington <bcodding@...merspace.com>
---
 fs/namei.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/fs/namei.c b/fs/namei.c
index e2bfd2a73cba..9c0aad5bbff7 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -3552,19 +3552,16 @@ static int may_o_create(struct mnt_idmap *idmap,
  *
  * Returns an error code otherwise.
  */
-static struct dentry *atomic_open(struct nameidata *nd, struct dentry *dentry,
+static struct dentry *atomic_open(const struct path *path, struct dentry *dentry,
 				  struct file *file,
 				  int open_flag, umode_t mode)
 {
 	struct dentry *const DENTRY_NOT_SET = (void *) -1UL;
-	struct inode *dir =  nd->path.dentry->d_inode;
+	struct inode *dir =  path->dentry->d_inode;
 	int error;
 
-	if (nd->flags & LOOKUP_DIRECTORY)
-		open_flag |= O_DIRECTORY;
-
 	file->f_path.dentry = DENTRY_NOT_SET;
-	file->f_path.mnt = nd->path.mnt;
+	file->f_path.mnt = path->mnt;
 	error = dir->i_op->atomic_open(dir, dentry, file,
 				       open_to_namei_flags(open_flag), mode);
 	d_lookup_done(dentry);
@@ -3676,7 +3673,10 @@ static struct dentry *lookup_open(struct nameidata *nd, struct file *file,
 	if (create_error)
 		open_flag &= ~O_CREAT;
 	if (dir_inode->i_op->atomic_open) {
-		dentry = atomic_open(nd, dentry, file, open_flag, mode);
+		if (nd->flags & LOOKUP_DIRECTORY)
+			open_flag |= O_DIRECTORY;
+
+		dentry = atomic_open(&nd->path, dentry, file, open_flag, mode);
 		if (unlikely(create_error) && dentry == ERR_PTR(-ENOENT))
 			dentry = ERR_PTR(create_error);
 		return dentry;
-- 
2.50.1