task_struct: make journal_info conditional

[safe/jmp/linux-2.6] / fs / ext4 / super.c

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 2b382f6..768c111 100644 (file)
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -603,10 +603,6 @@ static void ext4_put_super(struct super_block *sb)
        if (sb->s_dirt)
                ext4_commit_super(sb, 1);
 
-       ext4_release_system_zone(sb);
-       ext4_mb_release(sb);
-       ext4_ext_release(sb);
-       ext4_xattr_put_super(sb);
        if (sbi->s_journal) {
                err = jbd2_journal_destroy(sbi->s_journal);
                sbi->s_journal = NULL;
@@ -614,6 +610,12 @@ static void ext4_put_super(struct super_block *sb)
                        ext4_abort(sb, __func__,
                                   "Couldn't clean up the journal");
        }
+
+       ext4_release_system_zone(sb);
+       ext4_mb_release(sb);
+       ext4_ext_release(sb);
+       ext4_xattr_put_super(sb);
+
        if (!(sb->s_flags & MS_RDONLY)) {
                EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
                es->s_state = cpu_to_le16(sbi->s_mount_state);
@@ -704,6 +706,8 @@ static struct inode *ext4_alloc_inode(struct super_block *sb)
        spin_lock_init(&(ei->i_block_reservation_lock));
        INIT_LIST_HEAD(&ei->i_aio_dio_complete_list);
        ei->cur_aio_dio = NULL;
+       ei->i_sync_tid = 0;
+       ei->i_datasync_tid = 0;
 
        return &ei->vfs_inode;
 }
@@ -765,9 +769,22 @@ static inline void ext4_show_quota_options(struct seq_file *seq,
 #if defined(CONFIG_QUOTA)
        struct ext4_sb_info *sbi = EXT4_SB(sb);
 
-       if (sbi->s_jquota_fmt)
-               seq_printf(seq, ",jqfmt=%s",
-               (sbi->s_jquota_fmt == QFMT_VFS_OLD) ? "vfsold" : "vfsv0");
+       if (sbi->s_jquota_fmt) {
+               char *fmtname = "";
+
+               switch (sbi->s_jquota_fmt) {
+               case QFMT_VFS_OLD:
+                       fmtname = "vfsold";
+                       break;
+               case QFMT_VFS_V0:
+                       fmtname = "vfsv0";
+                       break;
+               case QFMT_VFS_V1:
+                       fmtname = "vfsv1";
+                       break;
+               }
+               seq_printf(seq, ",jqfmt=%s", fmtname);
+       }
 
        if (sbi->s_qf_names[USRQUOTA])
                seq_printf(seq, ",usrjquota=%s", sbi->s_qf_names[USRQUOTA]);
@@ -902,6 +919,9 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs)
        if (test_opt(sb, DISCARD))
                seq_puts(seq, ",discard");
 
+       if (test_opt(sb, NOLOAD))
+               seq_puts(seq, ",norecovery");
+
        ext4_show_quota_options(seq, sb);
 
        return 0;
@@ -1077,9 +1097,9 @@ enum {
        Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback,
        Opt_data_err_abort, Opt_data_err_ignore,
        Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
-       Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota,
-       Opt_ignore, Opt_barrier, Opt_nobarrier, Opt_err, Opt_resize,
-       Opt_usrquota, Opt_grpquota, Opt_i_version,
+       Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota,
+       Opt_noquota, Opt_ignore, Opt_barrier, Opt_nobarrier, Opt_err,
+       Opt_resize, Opt_usrquota, Opt_grpquota, Opt_i_version,
        Opt_stripe, Opt_delalloc, Opt_nodelalloc,
        Opt_block_validity, Opt_noblock_validity,
        Opt_inode_readahead_blks, Opt_journal_ioprio,
@@ -1108,6 +1128,7 @@ static const match_table_t tokens = {
        {Opt_acl, "acl"},
        {Opt_noacl, "noacl"},
        {Opt_noload, "noload"},
+       {Opt_noload, "norecovery"},
        {Opt_nobh, "nobh"},
        {Opt_bh, "bh"},
        {Opt_commit, "commit=%u"},
@@ -1129,6 +1150,7 @@ static const match_table_t tokens = {
        {Opt_grpjquota, "grpjquota=%s"},
        {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
        {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
+       {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
        {Opt_grpquota, "grpquota"},
        {Opt_noquota, "noquota"},
        {Opt_quota, "quota"},
@@ -1431,6 +1453,9 @@ clear_qf_name:
                        goto set_qf_format;
                case Opt_jqfmt_vfsv0:
                        qfmt = QFMT_VFS_V0;
+                       goto set_qf_format;
+               case Opt_jqfmt_vfsv1:
+                       qfmt = QFMT_VFS_V1;
 set_qf_format:
                        if (sb_any_quota_loaded(sb) &&
                            sbi->s_jquota_fmt != qfmt) {
@@ -1473,6 +1498,7 @@ set_qf_format:
                case Opt_offgrpjquota:
                case Opt_jqfmt_vfsold:
                case Opt_jqfmt_vfsv0:
+               case Opt_jqfmt_vfsv1:
                        ext4_msg(sb, KERN_ERR,
                                "journaled quota options not supported");
                        break;
@@ -3956,6 +3982,58 @@ static int ext4_get_sb(struct file_system_type *fs_type, int flags,
        return get_sb_bdev(fs_type, flags, dev_name, data, ext4_fill_super,mnt);
 }
 
+#if !defined(CONTIG_EXT2_FS) && !defined(CONFIG_EXT2_FS_MODULE) && defined(CONFIG_EXT4_USE_FOR_EXT23)
+static struct file_system_type ext2_fs_type = {
+       .owner          = THIS_MODULE,
+       .name           = "ext2",
+       .get_sb         = ext4_get_sb,
+       .kill_sb        = kill_block_super,
+       .fs_flags       = FS_REQUIRES_DEV,
+};
+
+static inline void register_as_ext2(void)
+{
+       int err = register_filesystem(&ext2_fs_type);
+       if (err)
+               printk(KERN_WARNING
+                      "EXT4-fs: Unable to register as ext2 (%d)\n", err);
+}
+
+static inline void unregister_as_ext2(void)
+{
+       unregister_filesystem(&ext2_fs_type);
+}
+#else
+static inline void register_as_ext2(void) { }
+static inline void unregister_as_ext2(void) { }
+#endif
+
+#if !defined(CONTIG_EXT3_FS) && !defined(CONFIG_EXT3_FS_MODULE) && defined(CONFIG_EXT4_USE_FOR_EXT23)
+static struct file_system_type ext3_fs_type = {
+       .owner          = THIS_MODULE,
+       .name           = "ext3",
+       .get_sb         = ext4_get_sb,
+       .kill_sb        = kill_block_super,
+       .fs_flags       = FS_REQUIRES_DEV,
+};
+
+static inline void register_as_ext3(void)
+{
+       int err = register_filesystem(&ext3_fs_type);
+       if (err)
+               printk(KERN_WARNING
+                      "EXT4-fs: Unable to register as ext3 (%d)\n", err);
+}
+
+static inline void unregister_as_ext3(void)
+{
+       unregister_filesystem(&ext3_fs_type);
+}
+#else
+static inline void register_as_ext3(void) { }
+static inline void unregister_as_ext3(void) { }
+#endif
+
 static struct file_system_type ext4_fs_type = {
        .owner          = THIS_MODULE,
        .name           = "ext4",
@@ -3985,11 +4063,15 @@ static int __init init_ext4_fs(void)
        err = init_inodecache();
        if (err)
                goto out1;
+       register_as_ext2();
+       register_as_ext3();
        err = register_filesystem(&ext4_fs_type);
        if (err)
                goto out;
        return 0;
 out:
+       unregister_as_ext2();
+       unregister_as_ext3();
        destroy_inodecache();
 out1:
        exit_ext4_xattr();
@@ -4005,6 +4087,8 @@ out4:
 
 static void __exit exit_ext4_fs(void)
 {
+       unregister_as_ext2();
+       unregister_as_ext3();
        unregister_filesystem(&ext4_fs_type);
        destroy_inodecache();
        exit_ext4_xattr();