------------------------------------------------------------------------ r77542 | vboxsync | 2019-03-03 05:40:17 +0100 (nie, 03 mar 2019) | 1 line linux/vboxsf: MS_REMOUNT and friends moved to uapi/linux/mount.h in 5.0 (rc8), so we need to include it to use it. bugref:9172 Index: src/VBox/Additions/linux/sharedfolders/vfsmod.c =================================================================== --- src/VBox/Additions/linux/sharedfolders/vfsmod.c (revision 77541) +++ src/VBox/Additions/linux/sharedfolders/vfsmod.c (revision 77542) @@ -45,7 +45,9 @@ #include "revision-generated.h" #include "product-generated.h" #include "VBoxGuestR0LibInternal.h" -#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 3, 0) +#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 0, 0) +# include /* for MS_REMOUNT */ +#elif LINUX_VERSION_CODE < KERNEL_VERSION(3, 3, 0) # include #endif #include ------------------------------------------------------------------------