switch exp_parent() to struct path

... and lose the always-NULL last argument (non-NULL case had been
split off a while ago).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index 3f6d51b8c3efed8d6548c35d961250af77c9ccfc..5149dabde5551d72d10f8254c021d52cb35a75fc 100644 (file)
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -871,23 +871,19 @@ static svc_export *exp_get_by_name(svc_client *clp, const struct path *path,
 /*
  * Find the export entry for a given dentry.
  */
-static struct svc_export *exp_parent(svc_client *clp, struct vfsmount *mnt,
-                                    struct dentry *dentry,
-                                    struct cache_req *reqp)
+static struct svc_export *exp_parent(svc_client *clp, struct path *path)
 {
-       struct path path = {.mnt = mnt, .dentry = dentry};
-       svc_export *exp;
-
-       dget(path.dentry);
-       exp = exp_get_by_name(clp, &path, reqp);
-
-       while (PTR_ERR(exp) == -ENOENT && !IS_ROOT(path.dentry)) {
-               struct dentry *parent = dget_parent(path.dentry);
-               dput(path.dentry);
-               path.dentry = parent;
-               exp = exp_get_by_name(clp, &path, reqp);
+       struct dentry *saved = dget(path->dentry);
+       svc_export *exp = exp_get_by_name(clp, path, NULL);
+
+       while (PTR_ERR(exp) == -ENOENT && !IS_ROOT(path->dentry)) {
+               struct dentry *parent = dget_parent(path->dentry);
+               dput(path->dentry);
+               path->dentry = parent;
+               exp = exp_get_by_name(clp, path, NULL);
        }
-       dput(path.dentry);
+       dput(path->dentry);
+       path->dentry = saved;
        return exp;
 }
 
@@ -1174,7 +1170,7 @@ exp_rootfh(svc_client *clp, char *name, struct knfsd_fh *f, int maxsize)
        dprintk("nfsd: exp_rootfh(%s [%p] %s:%s/%ld)\n",
                 name, path.dentry, clp->name,
                 inode->i_sb->s_id, inode->i_ino);
-       exp = exp_parent(clp, path.mnt, path.dentry, NULL);
+       exp = exp_parent(clp, &path);
        if (IS_ERR(exp)) {
                err = PTR_ERR(exp);
                goto out;