1 files changed, 37 insertions, 3 deletions

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 09d9359c8055..02bf24343979 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -671,6 +671,7 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs)
         unsigned long def_mount_opts;
         struct super_block *sb = vfs->mnt_sb;
         struct ext4_sb_info *sbi = EXT4_SB(sb);
+        journal_t *journal = sbi->s_journal;
         struct ext4_super_block *es = sbi->s_es;
 
         def_mount_opts = le32_to_cpu(es->s_default_mount_opts);
@@ -729,8 +730,15 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs)
                 seq_printf(seq, ",commit=%u",
                            (unsigned) (sbi->s_commit_interval / HZ));
         }
-        if (test_opt(sb, BARRIER))
-                seq_puts(seq, ",barrier=1");
+        /*
+         * We're changing the default of barrier mount option, so
+         * let's always display its mount state so it's clear what its
+         * status is.
+         */
+        seq_puts(seq, ",barrier=");
+        seq_puts(seq, test_opt(sb, BARRIER) ? "1" : "0");
+        if (test_opt(sb, JOURNAL_ASYNC_COMMIT))
+                seq_puts(seq, ",journal_async_commit");
         if (test_opt(sb, NOBH))
                 seq_puts(seq, ",nobh");
         if (!test_opt(sb, EXTENTS))
@@ -1907,6 +1915,7 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent)
         sbi->s_resgid = le16_to_cpu(es->s_def_resgid);
 
         set_opt(sbi->s_mount_opt, RESERVATION);
+        set_opt(sbi->s_mount_opt, BARRIER);
 
         /*
          * turn on extents feature by default in ext4 filesystem
@@ -2189,6 +2198,29 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent)
             EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL)) {
                 if (ext4_load_journal(sb, es, journal_devnum))
                         goto failed_mount3;
+                if (!(sb->s_flags & MS_RDONLY) &&
+                    EXT4_SB(sb)->s_journal->j_failed_commit) {
+                        printk(KERN_CRIT "EXT4-fs error (device %s): "
+                               "ext4_fill_super: Journal transaction "
+                               "%u is corrupt\n", sb->s_id, 
+                               EXT4_SB(sb)->s_journal->j_failed_commit);
+                        if (test_opt (sb, ERRORS_RO)) {
+                                printk (KERN_CRIT
+                                        "Mounting filesystem read-only\n");
+                                sb->s_flags |= MS_RDONLY;
+                                EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS;
+                                es->s_state |= cpu_to_le16(EXT4_ERROR_FS);
+                        }
+                        if (test_opt(sb, ERRORS_PANIC)) {
+                                EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS;
+                                es->s_state |= cpu_to_le16(EXT4_ERROR_FS);
+                                ext4_commit_super(sb, es, 1);
+                                printk(KERN_CRIT
+                                       "EXT4-fs (device %s): mount failed\n",
+                                      sb->s_id);
+                                goto failed_mount4;
+                        }
+                }
         } else if (journal_inum) {
                 if (ext4_create_journal(sb, es, journal_inum))
                         goto failed_mount3;
@@ -3305,8 +3337,10 @@ static ssize_t ext4_quota_write(struct super_block *sb, int type,
                 blk++;
         }
 out:
-        if (len == towrite)
+        if (len == towrite) {
+                mutex_unlock(&inode->i_mutex);
                 return err;
+        }
         if (inode->i_size < off+len-towrite) {
                 i_size_write(inode, off+len-towrite);
                 EXT4_I(inode)->i_disksize = inode->i_size;