Turn on extents feature by default in ext4 filesystem. User could use
-o noextents to turn it off.
Signed-Off-By: Mingming Cao <[email protected]>
Index: linux-2.6.21.1/fs/ext4/super.c
===================================================================
--- linux-2.6.21.1.orig/fs/ext4/super.c 2007-05-11 16:33:10.000000000 -0700
+++ linux-2.6.21.1/fs/ext4/super.c 2007-05-11 16:34:50.000000000 -0700
@@ -1549,6 +1549,12 @@
set_opt(sbi->s_mount_opt, RESERVATION);
+ /*
+ * turn on extents feature by default in ext4 filesystem
+ * User -o noextents to turn it off
+ */
+ set_opt (sbi->s_mount_opt, EXTENTS);
+
if (!parse_options ((char *) data, sb, &journal_inum, &journal_devnum,
NULL, 0))
goto failed_mount;