--- ./src/VBox/Additions/linux/sharedfolders/regops.c.orig
+++ ./src/VBox/Additions/linux/sharedfolders/regops.c
@@ -561,18 +561,6 @@
     .release     = sf_reg_release,
     .mmap        = sf_reg_mmap,
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
-# if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 23)
-    .splice_read = generic_file_splice_read,
-# else
-    .sendfile    = generic_file_sendfile,
-# endif
-# if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 16, 0)
-    .read_iter   = generic_file_read_iter,
-    .write_iter  = generic_file_write_iter,
-# else
-    .aio_read    = generic_file_aio_read,
-    .aio_write   = generic_file_aio_write,
-# endif
 # if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35)
     .fsync       = noop_fsync,
 # else