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Commit 1e2462f9 authored by Mingming Cao's avatar Mingming Cao Committed by Theodore Ts'o
Browse files

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: default avatarMingming Cao <cmm@us.ibm.com>
Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
parent 749269fa

fs/ext4/super.c

+11 −1
Original line number Diff line number Diff line
@@ -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;