diff -up openafs-1.6.22.2/src/afs/LINUX/osi_vnodeops.c.rh75enotdir openafs-1.6.22.2/src/afs/LINUX/osi_vnodeops.c
--- openafs-1.6.22.2/src/afs/LINUX/osi_vnodeops.c.rh75enotdir	2018-03-02 13:47:53.455634567 -0500
+++ openafs-1.6.22.2/src/afs/LINUX/osi_vnodeops.c	2018-03-02 13:54:29.729629392 -0500
@@ -47,6 +47,16 @@
 #define MAX_ERRNO 1000L
 #endif

+/* Workaround for RH 7.5 which introduced file operation iterate() but requires
+ * each file->f_mode to be marked with FMODE_KABI_ITERATE.  Instead OpenAFS will
+ * continue to use file opearation readdir() in this case.
+ */
+#if defined(STRUCT_FILE_OPERATIONS_HAS_ITERATE) && !defined(FMODE_KABI_ITERATE)
+#define USE_FOP_ITERATE 1
+#else
+#undef USE_FOP_ITERATE
+#endif
+
 int cachefs_noreadpage = 0;

 extern struct backing_dev_info *afs_backing_dev_info;
@@ -296,7 +306,7 @@ extern int BlobScan(struct dcache * afil
  * handling and use of bulkstats will need to be reflected here as well.
  */
 static int
-#if defined(STRUCT_FILE_OPERATIONS_HAS_ITERATE)
+#if defined(USE_FOP_ITERATE)
 afs_linux_readdir(struct file *fp, struct dir_context *ctx)
 #else
 afs_linux_readdir(struct file *fp, void *dirbuf, filldir_t filldir)
@@ -378,7 +388,7 @@ afs_linux_readdir(struct file *fp, void
      * takes an offset in units of blobs, rather than bytes.
      */
     code = 0;
-#if defined(STRUCT_FILE_OPERATIONS_HAS_ITERATE)
+#if defined(USE_FOP_ITERATE)
     offset = ctx->pos;
 #else
     offset = (int) fp->f_pos;
@@ -437,7 +447,7 @@ afs_linux_readdir(struct file *fp, void
 	     * holding the GLOCK.
 	     */
 	    AFS_GUNLOCK();
-#if defined(STRUCT_FILE_OPERATIONS_HAS_ITERATE)
+#if defined(USE_FOP_ITERATE)
 	    /* dir_emit returns a bool - true when it succeeds.
 	     * Inverse the result to fit with how we check "code" */
 	    code = !dir_emit(ctx, de->name, len, ino, type);
@@ -454,7 +464,7 @@ afs_linux_readdir(struct file *fp, void
     /* If filldir didn't fill in the last one this is still pointing to that
      * last attempt.
      */
-#if defined(STRUCT_FILE_OPERATIONS_HAS_ITERATE)
+#if defined(USE_FOP_ITERATE)
     ctx->pos = (loff_t) offset;
 #else
     fp->f_pos = (loff_t) offset;
@@ -780,7 +790,7 @@ out:

 struct file_operations afs_dir_fops = {
   .read =	generic_read_dir,
-#if defined(STRUCT_FILE_OPERATIONS_HAS_ITERATE)
+#if defined(USE_FOP_ITERATE)
   .iterate =	afs_linux_readdir,
 #else
   .readdir =	afs_linux_readdir,