- support relatime / norelatime
diff --git a/include/platform.h b/include/platform.h
index d2c1f9d..0f2f83a 100644
--- a/include/platform.h
+++ b/include/platform.h
@@ -350,7 +350,9 @@
#ifndef MS_SHARED
#define MS_SHARED (1<<20)
#endif
-
+#ifndef MS_RELATIME
+#define MS_RELATIME (1 << 21)
+#endif
#if !defined(BLKSSZGET)
#define BLKSSZGET _IO(0x12, 104)
diff --git a/include/usage.h b/include/usage.h
index 78f4036..e242990 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -2661,6 +2661,7 @@
" [a]sync Writes are asynchronous / synchronous\n" \
" [no]atime Disable / enable updates to inode access times\n" \
" [no]diratime Disable / enable atime updates to directories\n" \
+ " [no]relatime Disable / enable atime updates relative to modification time\n" \
" [no]dev Allow use of special device files / disallow them\n" \
" [no]exec Allow use of executable files / disallow them\n" \
" [no]suid Allow set-user-id-root programs / disallow them\n" \
diff --git a/util-linux/mount.c b/util-linux/mount.c
index 2288e2c..4cc1d4b 100644
--- a/util-linux/mount.c
+++ b/util-linux/mount.c
@@ -137,6 +137,8 @@
/* "nodiratime" */ MS_NODIRATIME,
/* "mand" */ MS_MANDLOCK,
/* "nomand" */ ~MS_MANDLOCK,
+ /* "relatime" */ MS_RELATIME,
+ /* "norelatime" */ ~MS_RELATIME,
/* "loud" */ ~MS_SILENT,
// action flags
@@ -189,6 +191,8 @@
"nodiratime" "\0"
"mand" "\0"
"nomand" "\0"
+ "relatime" "\0"
+ "norelatime" "\0"
"loud" "\0"
// action flags