2 files changed, 60 insertions, 2 deletions

diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 04bc96caa7b2..3e78af2ae7d8 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -203,10 +203,66 @@ static void ext2_clear_inode(struct inode *inode)
 
 static int ext2_show_options(struct seq_file *seq, struct vfsmount *vfs)
 {
-        struct ext2_sb_info *sbi = EXT2_SB(vfs->mnt_sb);
+        struct super_block *sb = vfs->mnt_sb;
+        struct ext2_sb_info *sbi = EXT2_SB(sb);
+        struct ext2_super_block *es = sbi->s_es;
+        unsigned long def_mount_opts;
+
+        def_mount_opts = le32_to_cpu(es->s_default_mount_opts);
 
-        if (sbi->s_mount_opt & EXT2_MOUNT_GRPID)
+        if (sbi->s_sb_block != 1)
+                seq_printf(seq, ",sb=%lu", sbi->s_sb_block);
+        if (test_opt(sb, MINIX_DF))
+                seq_puts(seq, ",minixdf");
+        if (test_opt(sb, GRPID))
                 seq_puts(seq, ",grpid");
+        if (!test_opt(sb, GRPID) && (def_mount_opts & EXT2_DEFM_BSDGROUPS))
+                seq_puts(seq, ",nogrpid");
+        if (sbi->s_resuid != EXT2_DEF_RESUID ||
+            le16_to_cpu(es->s_def_resuid) != EXT2_DEF_RESUID) {
+                seq_printf(seq, ",resuid=%u", sbi->s_resuid);
+        }
+        if (sbi->s_resgid != EXT2_DEF_RESGID ||
+            le16_to_cpu(es->s_def_resgid) != EXT2_DEF_RESGID) {
+                seq_printf(seq, ",resgid=%u", sbi->s_resgid);
+        }
+        if (test_opt(sb, ERRORS_CONT)) {
+                int def_errors = le16_to_cpu(es->s_errors);
+
+                if (def_errors == EXT2_ERRORS_PANIC ||
+                    def_errors == EXT2_ERRORS_RO) {
+                        seq_puts(seq, ",errors=continue");
+                }
+        }
+        if (test_opt(sb, ERRORS_RO))
+                seq_puts(seq, ",errors=remount-ro");
+        if (test_opt(sb, ERRORS_PANIC))
+                seq_puts(seq, ",errors=panic");
+        if (test_opt(sb, NO_UID32))
+                seq_puts(seq, ",nouid32");
+        if (test_opt(sb, DEBUG))
+                seq_puts(seq, ",debug");
+        if (test_opt(sb, OLDALLOC))
+                seq_puts(seq, ",oldalloc");
+
+#ifdef CONFIG_EXT2_FS_XATTR
+        if (test_opt(sb, XATTR_USER))
+                seq_puts(seq, ",user_xattr");
+        if (!test_opt(sb, XATTR_USER) &&
+            (def_mount_opts & EXT2_DEFM_XATTR_USER)) {
+                seq_puts(seq, ",nouser_xattr");
+        }
+#endif
+
+#ifdef CONFIG_EXT2_FS_POSIX_ACL
+        if (test_opt(sb, POSIX_ACL))
+                seq_puts(seq, ",acl");
+        if (!test_opt(sb, POSIX_ACL) && (def_mount_opts & EXT2_DEFM_ACL))
+                seq_puts(seq, ",noacl");
+#endif
+
+        if (test_opt(sb, NOBH))
+                seq_puts(seq, ",nobh");
 
 #if defined(CONFIG_QUOTA)
         if (sbi->s_mount_opt & EXT2_MOUNT_USRQUOTA)
@@ -659,6 +715,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
         if (!sbi)
                 return -ENOMEM;
         sb->s_fs_info = sbi;
+        sbi->s_sb_block = sb_block;
 
         /*
          * See what the current blocksize for the device is, and
diff --git a/include/linux/ext2_fs_sb.h b/include/linux/ext2_fs_sb.h
index d149f2959e67..199ef37b0a19 100644
--- a/include/linux/ext2_fs_sb.h
+++ b/include/linux/ext2_fs_sb.h
@@ -39,6 +39,7 @@ struct ext2_sb_info {
         struct ext2_super_block * s_es; /* Pointer to the super block in the buffer */
         struct buffer_head ** s_group_desc;
         unsigned long  s_mount_opt;
+        unsigned long s_sb_block;
         uid_t s_resuid;
         gid_t s_resgid;
         unsigned short s_mount_state;