• Bartlomiej Zolnierkiewicz's avatar
    block: enable by default support for large devices and files on 32-bit archs · db29a6b4
    Bartlomiej Zolnierkiewicz authored
    Enable by default support for large devices and files (CONFIG_LBD):
    
    - With 1TB disks being a commodity hardware it is quite easy to hit 2TB
      limitation while building RAIDs etc. and many distros have been using
      CONFIG_LBD=y by default already (at least Fedora 10 and openSUSE 11.1).
    
    - This should also prevent a subtle ext4 filesystem compatibility issue:
      mke2fs.ext4 defaults to creating filesystems with huge_files feature
      enabled and such filesystems cannot be later mounted read-write on
      machines with CONFIG_LBD=n (it should be quite easy to hit this issue
      when trying to use filesystem created using distro kernel on system
      running the self-build kernel, think about USB disk enclosures & co.).
    
    While at it:
    
    - Clarify config option help text w.r.t. mounting ext4 filesystems
      (they can be mounted with CONFIG_LBD=n but in the read-only mode).
    
    Cc: "Theodore Ts'o" <tytso@mit.edu>
    Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
    Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
    db29a6b4
Kconfig 2.46 KB