ext4 mount options

ext4 mount options

fs/ext4/super.c

static const struct mount_opts {
    int    token;
    int    mount_opt;
    int    flags;
} ext4_mount_opts[] = {
    {Opt_minix_df, EXT4_MOUNT_MINIX_DF, MOPT_SET},
    {Opt_bsd_df, EXT4_MOUNT_MINIX_DF, MOPT_CLEAR},
    {Opt_grpid, EXT4_MOUNT_GRPID, MOPT_SET},
    {Opt_nogrpid, EXT4_MOUNT_GRPID, MOPT_CLEAR},
    {Opt_block_validity, EXT4_MOUNT_BLOCK_VALIDITY, MOPT_SET},
    {Opt_noblock_validity, EXT4_MOUNT_BLOCK_VALIDITY, MOPT_CLEAR},
    {Opt_dioread_nolock, EXT4_MOUNT_DIOREAD_NOLOCK,
     MOPT_EXT4_ONLY | MOPT_SET},
    {Opt_dioread_lock, EXT4_MOUNT_DIOREAD_NOLOCK,
     MOPT_EXT4_ONLY | MOPT_CLEAR},
    {Opt_discard, EXT4_MOUNT_DISCARD, MOPT_SET},
    {Opt_nodiscard, EXT4_MOUNT_DISCARD, MOPT_CLEAR},
    {Opt_delalloc, EXT4_MOUNT_DELALLOC,
     MOPT_EXT4_ONLY | MOPT_SET | MOPT_EXPLICIT},
    {Opt_nodelalloc, EXT4_MOUNT_DELALLOC,
...

enum {
    Opt_bsd_df, Opt_minix_df, Opt_grpid, Opt_nogrpid,
    Opt_resgid, Opt_resuid, Opt_sb, Opt_err_cont, Opt_err_panic, Opt_err_ro,
    Opt_nouid32, Opt_debug, Opt_removed,
    Opt_user_xattr, Opt_nouser_xattr, Opt_acl, Opt_noacl,
    Opt_auto_da_alloc, Opt_noauto_da_alloc, Opt_noload,
    Opt_commit, Opt_min_batch_time, Opt_max_batch_time, Opt_journal_dev,
    Opt_journal_path, Opt_journal_checksum, Opt_journal_async_commit,
    Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback,
    Opt_data_err_abort, Opt_data_err_ignore, Opt_test_dummy_encryption,
    Opt_inlinecrypt,
...

static const match_table_t tokens = {
    {Opt_bsd_df, "bsddf"},
    {Opt_minix_df, "minixdf"},
    {Opt_grpid, "grpid"},
    {Opt_grpid, "bsdgroups"},
    {Opt_nogrpid, "nogrpid"},
    {Opt_nogrpid, "sysvgroups"},
    {Opt_resgid, "resgid=%u"},
    {Opt_resuid, "resuid=%u"},
    {Opt_sb, "sb=%u"},
    {Opt_err_cont, "errors=continue"},
    {Opt_err_panic, "errors=panic"},
    {Opt_err_ro, "errors=remount-ro"},
    {Opt_nouid32, "nouid32"},
    {Opt_debug, "debug"},
    {Opt_removed, "oldalloc"},
    {Opt_removed, "orlov"},
    {Opt_user_xattr, "user_xattr"},
...