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>

1 files changed, 12 insertions, 16 deletions

diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index 3f6d51b8c3ef..5149dabde555 100644
--- 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;