From: Mingming Cao Date: Wed, 18 Jul 2007 13:00:55 +0000 (-0400) Subject: ext4: Enable extents by default X-Git-Tag: v2.6.23-rc1~494^2~13 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=1e2462f93e011f63fd0f1fedd2c05338ca6b31c2;p=linux-2.6-omap-h63xx.git 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 Signed-off-by: "Theodore Ts'o" --- diff --git a/fs/ext4/super.c b/fs/ext4/super.c index b806e689c4a..9c8baf46058 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;