X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=blobdiff_plain;f=lib%2Flibspl%2Finclude%2Fsys%2Fmount.h;h=145e785e3d520acf33db9b2fb9dbbbc0beb361c2;hb=e18be9a637088911d2b618788cd45982986e63cb;hp=d4ac6a9585d680979fc030b117dfe1671afdf055;hpb=1073d746d6421eb5faf8a3cf8534d82a2beb0512;p=zfs.git

diff --git a/lib/libspl/include/sys/mount.h b/lib/libspl/include/sys/mount.h
index d4ac6a9..145e785 100644
--- a/lib/libspl/include/sys/mount.h
+++ b/lib/libspl/include/sys/mount.h
@@ -73,4 +73,11 @@
 # define MS_DETACH	0x00000002
 #endif /* MNT_DETACH */
 
+/*
+ * Overlay mount is default in Linux, but for solaris/zfs
+ * compatibility, MS_OVERLAY is defined to explicitly have the user
+ * provide a flag (-O) to mount over a non empty directory.
+ */
+#define MS_OVERLAY      0x00000004
+
 #endif /* _LIBSPL_SYS_MOUNT_H */