nfsd4: helper function for getting mounted_on ino

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 18 insertions, 12 deletions

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index fd548d15508..af65fda7685 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -2014,6 +2014,22 @@ static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err)
         return 0;
 }
 
+
+static int get_parent_attributes(struct svc_export *exp, struct kstat *stat)
+{
+        struct path path = exp->ex_path;
+        int err;
+
+        path_get(&path);
+        while (follow_up(&path)) {
+                if (path.dentry != path.mnt->mnt_root)
+                        break;
+        }
+        err = vfs_getattr(path.mnt, path.dentry, stat);
+        path_put(&path);
+        return err;
+}
+
 /*
  * Note: @fhp can be NULL; in this case, we might have to compose the filehandle
  * ourselves.
@@ -2430,18 +2446,8 @@ out_acl:
                  * and this is the root of a cross-mounted filesystem.
                  */
                 if (ignore_crossmnt == 0 &&
-                    dentry == exp->ex_path.mnt->mnt_root) {
-                        struct path path = exp->ex_path;
-                        path_get(&path);
-                        while (follow_up(&path)) {
-                                if (path.dentry != path.mnt->mnt_root)
-                                        break;
-                        }
-                        err = vfs_getattr(path.mnt, path.dentry, &stat);
-                        path_put(&path);
-                        if (err)
-                                goto out_nfserr;
-                }
+                    dentry == exp->ex_path.mnt->mnt_root)
+                        get_parent_attributes(exp, &stat);
                 WRITE64(stat.ino);
         }
         if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) {