kill opendata->{mnt,dentry}

->filp->f_path is there for purpose...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/internal.h

@@ -83,8 +83,6 @@ extern struct super_block *user_get_super(dev_t);
  * open.c
  */
 struct opendata {
-	struct dentry *dentry;
-	struct vfsmount *mnt;
 	struct file *filp;
 };
 struct open_flags {

fs/namei.c

@@ -2269,14 +2269,11 @@ static struct file *atomic_open(struct nameidata *nd, struct dentry *dentry,
 	if (nd->flags & LOOKUP_DIRECTORY)
 		open_flag |= O_DIRECTORY;
 
-	od->dentry = DENTRY_NOT_SET;
-	od->mnt = nd->path.mnt;
+	od->filp->f_path.dentry = DENTRY_NOT_SET;
+	od->filp->f_path.mnt = nd->path.mnt;
 	error = dir->i_op->atomic_open(dir, dentry, od, open_flag, mode,
 				      opened);
 	if (error < 0) {
-		if (WARN_ON(od->dentry != DENTRY_NOT_SET))
-			dput(od->dentry);
-
 		if (create_error && error == -ENOENT)
 			error = create_error;
 		filp = ERR_PTR(error);
@@ -2290,13 +2287,13 @@ static struct file *atomic_open(struct nameidata *nd, struct dentry *dentry,
 	}
 
 	if (error) {	/* returned 1, that is */
-		if (WARN_ON(od->dentry == DENTRY_NOT_SET)) {
+		if (WARN_ON(od->filp->f_path.dentry == DENTRY_NOT_SET)) {
 			filp = ERR_PTR(-EIO);
 			goto out;
 		}
-		if (od->dentry) {
+		if (od->filp->f_path.dentry) {
 			dput(dentry);
-			dentry = od->dentry;
+			dentry = od->filp->f_path.dentry;
 		}
 		goto looked_up;
 	}
@@ -2607,7 +2604,7 @@ static struct file *do_last(struct nameidata *nd, struct path *path,
 	error = may_open(&nd->path, acc_mode, open_flag);
 	if (error)
 		goto exit;
-	od->mnt = nd->path.mnt;
+	od->filp->f_path.mnt = nd->path.mnt;
 	filp = finish_open(od, nd->path.dentry, NULL, opened);
 	if (IS_ERR(filp)) {
 		if (filp == ERR_PTR(-EOPENSTALE))

fs/open.c

@@ -788,10 +788,10 @@ struct file *finish_open(struct opendata *od, struct dentry *dentry,
 	struct file *res;
 	BUG_ON(*opened & FILE_OPENED); /* once it's opened, it's opened */
 
-	mntget(od->mnt);
+	mntget(od->filp->f_path.mnt);
 	dget(dentry);
 
-	res = do_dentry_open(dentry, od->mnt, od->filp, open, current_cred());
+	res = do_dentry_open(dentry, od->filp->f_path.mnt, od->filp, open, current_cred());
 	if (!IS_ERR(res))
 		*opened |= FILE_OPENED;
 
@@ -810,7 +810,7 @@ EXPORT_SYMBOL(finish_open);
  */
 void finish_no_open(struct opendata *od, struct dentry *dentry)
 {
-	od->dentry = dentry;
+	od->filp->f_path.dentry = dentry;
 }
 EXPORT_SYMBOL(finish_no_open);