1 files changed, 11 insertions, 8 deletions

diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 8173faee31e6..0cdbc5e7655a 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -96,9 +96,6 @@ void nilfs_error(struct super_block *sb, const char *function,
         if (!(sb->s_flags & MS_RDONLY)) {
                 struct the_nilfs *nilfs = sbi->s_nilfs;
 
-                if (!nilfs_test_opt(sbi, ERRORS_CONT))
-                        nilfs_detach_segment_constructor(sbi);
-
                 down_write(&nilfs->ns_sem);
                 if (!(nilfs->ns_mount_state & NILFS_ERROR_FS)) {
                         nilfs->ns_mount_state |= NILFS_ERROR_FS;
@@ -301,7 +298,7 @@ int nilfs_commit_super(struct nilfs_sb_info *sbi, int dupsb)
                 memcpy(sbp[1], sbp[0], nilfs->ns_sbsize);
                 nilfs->ns_sbwtime[1] = t;
         }
-        sbi->s_super->s_dirt = 0;
+        clear_nilfs_sb_dirty(nilfs);
         return nilfs_sync_super(sbi, dupsb);
 }
 
@@ -345,7 +342,7 @@ static int nilfs_sync_fs(struct super_block *sb, int wait)
                 err = nilfs_construct_segment(sb);
 
         down_write(&nilfs->ns_sem);
-        if (sb->s_dirt)
+        if (nilfs_sb_dirty(nilfs))
                 nilfs_commit_super(sbi, 1);
         up_write(&nilfs->ns_sem);
 
@@ -439,7 +436,7 @@ static int nilfs_statfs(struct dentry *dentry, struct kstatfs *buf)
         /*
          * Compute the overhead
          *
-         * When distributing meta data blocks outside semgent structure,
+         * When distributing meta data blocks outside segment structure,
          * We must count them as the overhead.
          */
         overhead = 0;
@@ -481,6 +478,8 @@ static int nilfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
                 seq_printf(seq, ",order=strict");
         if (nilfs_test_opt(sbi, NORECOVERY))
                 seq_printf(seq, ",norecovery");
+        if (nilfs_test_opt(sbi, DISCARD))
+                seq_printf(seq, ",discard");
 
         return 0;
 }
@@ -550,7 +549,7 @@ static const struct export_operations nilfs_export_ops = {
 enum {
         Opt_err_cont, Opt_err_panic, Opt_err_ro,
         Opt_nobarrier, Opt_snapshot, Opt_order, Opt_norecovery,
-        Opt_err,
+        Opt_discard, Opt_err,
 };
 
 static match_table_t tokens = {
@@ -561,6 +560,7 @@ static match_table_t tokens = {
         {Opt_snapshot, "cp=%u"},
         {Opt_order, "order=%s"},
         {Opt_norecovery, "norecovery"},
+        {Opt_discard, "discard"},
         {Opt_err, NULL}
 };
 
@@ -614,6 +614,9 @@ static int parse_options(char *options, struct super_block *sb)
                 case Opt_norecovery:
                         nilfs_set_opt(sbi, NORECOVERY);
                         break;
+                case Opt_discard:
+                        nilfs_set_opt(sbi, DISCARD);
+                        break;
                 default:
                         printk(KERN_ERR
                                "NILFS: Unrecognized mount option \"%s\"\n", p);
@@ -863,7 +866,7 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data)
         if ((*flags & MS_RDONLY) &&
             sbi->s_snapshot_cno != old_opts.snapshot_cno) {
                 printk(KERN_WARNING "NILFS (device %s): couldn't "
-                       "remount to a different snapshot. \n",
+                       "remount to a different snapshot.\n",
                        sb->s_id);
                 err = -EINVAL;
                 goto restore_opts;