ksmbd: remove generic_fillattr use in smb2_open()

Removed the use of unneeded generic_fillattr() in smb2_open().
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

fs/ksmbd/smb2pdu.c

@@ -2761,7 +2761,6 @@ int smb2_open(struct ksmbd_work *work)
 	} else {
 		file_present = true;
 		user_ns = mnt_user_ns(path.mnt);
-		generic_fillattr(user_ns, d_inode(path.dentry), &stat);
 	}
 	if (stream_name) {
 		if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) {
@@ -2770,7 +2769,8 @@ int smb2_open(struct ksmbd_work *work)
 				rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
 			}
 		} else {
-			if (S_ISDIR(stat.mode) && s_type == DATA_STREAM) {
+			if (file_present && S_ISDIR(d_inode(path.dentry)->i_mode) &&
+			    s_type == DATA_STREAM) {
 				rc = -EIO;
 				rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
 			}
@@ -2787,7 +2787,8 @@ int smb2_open(struct ksmbd_work *work)
 	}
 
 	if (file_present && req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE &&
-	    S_ISDIR(stat.mode) && !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
+	    S_ISDIR(d_inode(path.dentry)->i_mode) &&
+	    !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
 		ksmbd_debug(SMB, "open() argument is a directory: %s, %x\n",
 			    name, req->CreateOptions);
 		rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
@@ -2797,7 +2798,7 @@ int smb2_open(struct ksmbd_work *work)
 
 	if (file_present && (req->CreateOptions & FILE_DIRECTORY_FILE_LE) &&
 	    !(req->CreateDisposition == FILE_CREATE_LE) &&
-	    !S_ISDIR(stat.mode)) {
+	    !S_ISDIR(d_inode(path.dentry)->i_mode)) {
 		rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
 		rc = -EIO;
 		goto err_out;