Turn on extents feature by default in ext4 filesystem. User could use -o noextents to turn it off. Signed-Off-By: Mingming Cao <cmm@xxxxxxxxxx> 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; - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html