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authorMingming Cao <cmm@us.ibm.com>2007-07-18 09:00:55 -0400
committerTheodore Ts'o <tytso@mit.edu>2007-07-18 09:00:55 -0400
commit1e2462f93e011f63fd0f1fedd2c05338ca6b31c2 (patch)
treefc8cb0f94c20b78198e73b3a7319c5678a2e3921 /fs/ext4
parent749269facaf87f6e516c3af12763e03181b9c139 (diff)
ext4: Enable extents by default
Turn on extents feature by default in ext4 filesystem, to get wider testing of extents feature in ext4dev. This can be disabled using -o noextents. Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/super.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index b806e689c4aa..9c8baf460588 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -734,7 +734,7 @@ enum {
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 = {
@@ -785,6 +785,7 @@ static match_table_t tokens = {
{Opt_usrquota, "usrquota"},
{Opt_barrier, "barrier=%u"},
{Opt_extents, "extents"},
+ {Opt_noextents, "noextents"},
{Opt_err, NULL},
{Opt_resize, "resize"},
};
@@ -1120,6 +1121,9 @@ clear_qf_name:
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\" "
@@ -1551,6 +1555,12 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent)
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;