ext4: make "norecovery" an alias for "noload"

[linux-block.git] / fs / ext4 / super.c

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 312211ee05af39618274736a49096cb88ff067de..5a2db612950b0c440b56edc529c68a116768bf9a 100644 (file)
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -899,6 +899,12 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs)
        if (test_opt(sb, NO_AUTO_DA_ALLOC))
                seq_puts(seq, ",noauto_da_alloc");
 
+       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;
@@ -1079,7 +1085,8 @@ enum {
        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
+       Opt_inode_readahead_blks, Opt_journal_ioprio,
+       Opt_discard, Opt_nodiscard,
 };
 
 static const match_table_t tokens = {
@@ -1104,6 +1111,7 @@ 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"},
@@ -1144,6 +1152,8 @@ static const match_table_t tokens = {
        {Opt_auto_da_alloc, "auto_da_alloc=%u"},
        {Opt_auto_da_alloc, "auto_da_alloc"},
        {Opt_noauto_da_alloc, "noauto_da_alloc"},
+       {Opt_discard, "discard"},
+       {Opt_nodiscard, "nodiscard"},
        {Opt_err, NULL},
 };
 
@@ -1300,9 +1310,11 @@ static int parse_options(char *options, struct super_block *sb,
                        *journal_devnum = option;
                        break;
                case Opt_journal_checksum:
-                       break;  /* Kept for backwards compatibility */
+                       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);
@@ -1563,6 +1575,12 @@ set_qf_format:
                        else
                                set_opt(sbi->s_mount_opt,NO_AUTO_DA_ALLOC);
                        break;
+               case Opt_discard:
+                       set_opt(sbi->s_mount_opt, DISCARD);
+                       break;
+               case Opt_nodiscard:
+                       clear_opt(sbi->s_mount_opt, DISCARD);
+                       break;
                default:
                        ext4_msg(sb, KERN_ERR,
                               "Unrecognized mount option \"%s\" "
@@ -1671,14 +1689,14 @@ static int ext4_fill_flex_info(struct super_block *sb)
        size_t size;
        int i;
 
-       if (!sbi->s_es->s_log_groups_per_flex) {
+       sbi->s_log_groups_per_flex = sbi->s_es->s_log_groups_per_flex;
+       groups_per_flex = 1 << sbi->s_log_groups_per_flex;
+
+       if (groups_per_flex < 2) {
                sbi->s_log_groups_per_flex = 0;
                return 1;
        }
 
-       sbi->s_log_groups_per_flex = sbi->s_es->s_log_groups_per_flex;
-       groups_per_flex = 1 << sbi->s_log_groups_per_flex;
-
        /* We allocate both existing and potentially added groups */
        flex_group_count = ((sbi->s_groups_count + groups_per_flex - 1) +
                        ((le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks) + 1) <<
@@ -2719,26 +2737,6 @@ 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) {
-                       ext4_msg(sb, KERN_CRIT, "error: "
-                              "ext4_fill_super: Journal transaction "
-                              "%u is corrupt",
-                              EXT4_SB(sb)->s_journal->j_failed_commit);
-                       if (test_opt(sb, ERRORS_RO)) {
-                               ext4_msg(sb, KERN_CRIT,
-                                      "Mounting filesystem read-only");
-                               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, 1);
-                               goto failed_mount4;
-                       }
-               }
        } else if (test_opt(sb, NOLOAD) && !(sb->s_flags & MS_RDONLY) &&
              EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER)) {
                ext4_msg(sb, KERN_ERR, "required journal recovery "
@@ -2759,14 +2757,20 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
                goto failed_mount4;
        }
 
-       jbd2_journal_set_features(sbi->s_journal,
-                                 JBD2_FEATURE_COMPAT_CHECKSUM, 0, 0);
-       if (test_opt(sb, JOURNAL_ASYNC_COMMIT))
-               jbd2_journal_set_features(sbi->s_journal, 0, 0,
+       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
+       } 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. */
@@ -3660,13 +3664,11 @@ static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf)
        buf->f_blocks = ext4_blocks_count(es) - sbi->s_overhead_last;
        buf->f_bfree = percpu_counter_sum_positive(&sbi->s_freeblocks_counter) -
                       percpu_counter_sum_positive(&sbi->s_dirtyblocks_counter);
-       ext4_free_blocks_count_set(es, buf->f_bfree);
        buf->f_bavail = buf->f_bfree - ext4_r_blocks_count(es);
        if (buf->f_bfree < ext4_r_blocks_count(es))
                buf->f_bavail = 0;
        buf->f_files = le32_to_cpu(es->s_inodes_count);
        buf->f_ffree = percpu_counter_sum_positive(&sbi->s_freeinodes_counter);
-       es->s_free_inodes_count = cpu_to_le32(buf->f_ffree);
        buf->f_namelen = EXT4_NAME_LEN;
        fsid = le64_to_cpup((void *)es->s_uuid) ^
               le64_to_cpup((void *)es->s_uuid + sizeof(u64));