Add a mount option to turn off extents.
Signed-off-by: Mingming Cao <[email protected]>
---
Index: linux-2.6.22-rc4/fs/ext4/super.c
===================================================================
--- linux-2.6.22-rc4.orig/fs/ext4/super.c 2007-06-11 17:02:18.000000000 -0700
+++ linux-2.6.22-rc4/fs/ext4/super.c 2007-06-11 17:02:22.000000000 -0700
@@ -725,7 +725,7 @@
Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota,
Opt_ignore, Opt_barrier, Opt_err, Opt_resize, Opt_usrquota,
- Opt_grpquota, Opt_extents,
+ Opt_grpquota, Opt_extents, Opt_noextents,
};
static match_table_t tokens = {
@@ -776,6 +776,7 @@
{Opt_usrquota, "usrquota"},
{Opt_barrier, "barrier=%u"},
{Opt_extents, "extents"},
+ {Opt_noextents, "noextents"},
{Opt_err, NULL},
{Opt_resize, "resize"},
};
@@ -1111,6 +1112,9 @@
case Opt_extents:
set_opt (sbi->s_mount_opt, EXTENTS);
break;
+ case Opt_noextents:
+ clear_opt (sbi->s_mount_opt, EXTENTS);
+ break;
default:
printk (KERN_ERR
"EXT4-fs: Unrecognized mount option \"%s\" "
-
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