1 files changed, 25 insertions, 0 deletions

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index c7305443e100..f7479d30735e 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -869,6 +869,7 @@ enum {
         Opt_user_xattr, Opt_nouser_xattr, Opt_acl, Opt_noacl,
         Opt_reservation, Opt_noreservation, Opt_noload, Opt_nobh, Opt_bh,
         Opt_commit, Opt_journal_update, Opt_journal_inum, Opt_journal_dev,
+        Opt_journal_checksum, Opt_journal_async_commit,
         Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback,
         Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
         Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota,
@@ -908,6 +909,8 @@ static match_table_t tokens = {
         {Opt_journal_update, "journal=update"},
         {Opt_journal_inum, "journal=%u"},
         {Opt_journal_dev, "journal_dev=%u"},
+        {Opt_journal_checksum, "journal_checksum"},
+        {Opt_journal_async_commit, "journal_async_commit"},
         {Opt_abort, "abort"},
         {Opt_data_journal, "data=journal"},
         {Opt_data_ordered, "data=ordered"},
@@ -1095,6 +1098,13 @@ static int parse_options (char *options, struct super_block *sb,
                                 return 0;
                         *journal_devnum = option;
                         break;
+                case Opt_journal_checksum:
+                        set_opt(sbi->s_mount_opt, JOURNAL_CHECKSUM);
+                        break;
+                case Opt_journal_async_commit:
+                        set_opt(sbi->s_mount_opt, JOURNAL_ASYNC_COMMIT);
+                        set_opt(sbi->s_mount_opt, JOURNAL_CHECKSUM);
+                        break;
                 case Opt_noload:
                         set_opt (sbi->s_mount_opt, NOLOAD);
                         break;
@@ -2114,6 +2124,21 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent)
                 goto failed_mount4;
         }
 
+        if (test_opt(sb, JOURNAL_ASYNC_COMMIT)) {
+                jbd2_journal_set_features(sbi->s_journal,
+                                JBD2_FEATURE_COMPAT_CHECKSUM, 0,
+                                JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
+        } else if (test_opt(sb, JOURNAL_CHECKSUM)) {
+                jbd2_journal_set_features(sbi->s_journal,
+                                JBD2_FEATURE_COMPAT_CHECKSUM, 0, 0);
+                jbd2_journal_clear_features(sbi->s_journal, 0, 0,
+                                JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
+        } else {
+                jbd2_journal_clear_features(sbi->s_journal,
+                                JBD2_FEATURE_COMPAT_CHECKSUM, 0,
+                                JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
+        }
+
         /* We have now updated the journal if required, so we can
          * validate the data journaling mode. */
         switch (test_opt(sb, DATA_FLAGS)) {