From: Karel Zak <kzak@redhat.com>
Date: Thu, 27 Nov 2008 11:08:44 +0000 (+0100)
Subject: mount: add i_version support
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bd9470da234b38da8578a4d3cd0c2f2b7495fa4d;p=util-linux

mount: add i_version support

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/mount/mount.8 b/mount/mount.8
index 818d5e09..56e6cef2 100644
--- a/mount/mount.8
+++ b/mount/mount.8
@@ -621,6 +621,12 @@ This option implies the options
 (unless overridden by subsequent options, as in the option line
 .BR group,dev,suid ).
 .TP
+.B iversion
+Every time the inode is modified, the i_version field will be incremented.
+.TP
+.B noiversion
+Do not increment the i_version inode field.
+.TP
 .B nofail
 Do not report errors for this device if it does not exist.
 .TP
diff --git a/mount/mount.c b/mount/mount.c
index bed792d2..d6b79d69 100644
--- a/mount/mount.c
+++ b/mount/mount.c
@@ -166,6 +166,10 @@ static const struct opt_map opt_map[] = {
   { "atime",	0, 1, MS_NOATIME },	/* Update access time */
   { "noatime",	0, 0, MS_NOATIME },	/* Do not update access time */
 #endif
+#ifdef MS_I_VERSION
+  { "iversion",	0, 0, MS_I_VERSION },	/* Update inode I_version time */
+  { "noiversion", 0, 1, MS_I_VERSION },	/* Don't update inode I_version time */
+#endif
 #ifdef MS_NODIRATIME
   { "diratime",	0, 1, MS_NODIRATIME },	/* Update dir access times */
   { "nodiratime", 0, 0, MS_NODIRATIME },/* Do not update dir access times */
diff --git a/mount/mount_constants.h b/mount/mount_constants.h
index d877f567..41311c05 100644
--- a/mount/mount_constants.h
+++ b/mount/mount_constants.h
@@ -56,6 +56,9 @@
 #ifndef MS_SHARED
 #define MS_SHARED	(1<<20)	/* 1048576 Shared*/
 #endif
+#ifndef MS_I_VERSION
+#define MS_I_VERSION	(1<<23)	/* update inode I_version field */
+#endif
 /*
  * Magic mount flag number. Had to be or-ed to the flag values.
  */