[PATCH 2/5] nfsd_mkdir(): switch to simple_start_creating()

[Al Viro <viro@zeniv.linux.org.uk>]

... and fold __nfsd_mkdir() into it.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 fs/nfsd/nfsctl.c | 37 ++++++++++++-------------------------
 1 file changed, 12 insertions(+), 25 deletions(-)

diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 282b961d8788..6d60bc48f96e 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -1128,43 +1128,30 @@ static struct inode *nfsd_get_inode(struct super_block *sb, umode_t mode)
 	return inode;
 }
 
-static int __nfsd_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode, struct nfsdfs_client *ncl)
+static struct dentry *nfsd_mkdir(struct dentry *parent, struct nfsdfs_client *ncl, char *name)
 {
+	struct inode *dir = parent->d_inode;
+	struct dentry *dentry;
 	struct inode *inode;
 
-	inode = nfsd_get_inode(dir->i_sb, mode);
+	inode = nfsd_get_inode(parent->d_sb, S_IFDIR | 0600);
 	if (!inode)
-		return -ENOMEM;
+		return ERR_PTR(-ENOMEM);
+
+	dentry = simple_start_creating(parent, name);
+	if (IS_ERR(dentry)) {
+		iput(inode);
+		return dentry;
+	}
 	if (ncl) {
 		inode->i_private = ncl;
 		kref_get(&ncl->cl_ref);
 	}
-	d_add(dentry, inode);
+	d_instantiate(dentry, inode);
 	inc_nlink(dir);
 	fsnotify_mkdir(dir, dentry);
-	return 0;
-}
-
-static struct dentry *nfsd_mkdir(struct dentry *parent, struct nfsdfs_client *ncl, char *name)
-{
-	struct inode *dir = parent->d_inode;
-	struct dentry *dentry;
-	int ret = -ENOMEM;
-
-	inode_lock(dir);
-	dentry = d_alloc_name(parent, name);
-	if (!dentry)
-		goto out_err;
-	ret = __nfsd_mkdir(d_inode(parent), dentry, S_IFDIR | 0600, ncl);
-	if (ret)
-		goto out_err;
-out:
 	inode_unlock(dir);
 	return dentry;
-out_err:
-	dput(dentry);
-	dentry = ERR_PTR(ret);
-	goto out;
 }
 
 #if IS_ENABLED(CONFIG_SUNRPC_GSS)
-- 
2.47.2