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    SubjectRe: EFS in 2.3.2 ???
    Hi Henning, Axel.

    Axel: Patch for your attention enclosed...

    >> I note that the 2.3.2 kernel tree includes a new filesystem
    >> called EFS, but there is apparently no documentation on what
    >> it is - no entries in Configure.help and nothing elsewhere
    >> in the Documentation tree either...

    >> Does anybody know anything about this file system and what
    >> it's for?

    > A pointer to further information: http://hhv.de/LVI/h/efs.html

    Ah...thanks for that...

    Enclosed is a patch to add relevant text to the Configure.help file to
    provide for that option. It also splits up a rather long paragraph in
    the umsdos help that followed it into several smaller paragraphs.

    Hopefully, this will find its way into the 2.3.3 kernel...

    Best wishes from Riley.

    +----------------------------------------------------------------------+
    | There is something frustrating about the quality and speed of Linux |
    | development, ie., the quality is too high and the speed is too high, |
    | in other words, I can implement this XXXX feature, but I bet someone |
    | else has already done so and is just about to release their patch. |
    +----------------------------------------------------------------------+
    * ftp://ftp.MemAlpha.cx/pub/rhw/Linux
    * http://www.MemAlpha.cx
    --- linux-2.3.2/Documentation/Configure.help~ Fri May 14 16:59:54 1999
    +++ linux-2.3.2/Documentation/Configure.help Sun May 16 20:35:29 1999
    @@ -7199,7 +7199,25 @@
    say M here and read Documentation/modules.txt. The module will be
    called vfat.o.

    +EFS filesystem support (read only)
    +CONFIG_EFS_FS
    + The Extent File System (efs) is Silicon Graphics' early block device
    + filesystem, widely used on pre-6.0 versions of IRIX. Since 6.0, xfs
    + has been bundled with IRIX and users are being encouraged to migrate
    + to xfs filesystems. IRIX support for efs will be read-only in
    + versions of IRIX beyond 6.5, however efs is still very much in use
    + on SGI software distribution CDs.
    +
    + If you want to compile this as a module ( = code which can be
    + inserted in and removed from the running kernel whenever you want),
    + say M here and read Documentation/modules.txt. The module will be
    + called efs.o.
    +
    + Note that the filesystem of your root partition (the one containing
    + the directory /) cannot be a module, so saying M could be dangerous.
    + If unsure, say N.
    +
    -umsdos: Unix like fs on top of std MSDOS fs
    +umsdos: Unix like fs on top of standard MSDOS fs
    CONFIG_UMSDOS_FS
    Say Y here if you want to run Linux from within an existing DOS
    partition of your hard drive. The advantage of this is that you can
    @@ -7207,20 +7225,25 @@
    backing everything up and restoring afterwards) and hence you're
    able to quickly try out Linux or show it to your friends; the
    disadvantage is that Linux becomes susceptible to DOS viruses and
    - that UMSDOS is somewhat slower than ext2fs. Another use of UMSDOS
    + that UMSDOS is somewhat slower than ext2fs.
    - is to write files with long unix filenames to MSDOS floppies; it
    - also allows Unix-style softlinks and owner/permissions of files on
    - MSDOS floppies. You will need a program called umssync in order to
    - make use of umsdos; read Documentation/filesystems/umsdos.txt.
    +
    + Another use of UMSDOS is to write files with long unix filenames
    + to MSDOS floppies; it also allows Unix-style softlinks and
    + owner/permissions of files on MSDOS floppies. You will need a
    + program called umssync in order to make use of umsdos; read
    + Documentation/filesystems/umsdos.txt.

    This option enlarges your kernel by about 25 kB and it only works if
    - you said Y to both "fat fs support" and "msdos fs support" above. If
    + you said Y to both "fat fs support" and "msdos fs support" above.
    - you want to compile this as a module ( = code which can be inserted
    - in and removed from the running kernel whenever you want), say M
    - here and read Documentation/modules.txt. The module will be called
    - umsdos.o. Note that the filesystem of your root partition (the one
    - containing the directory /) cannot be a module, so saying M could be
    - dangerous. If unsure, say N.
    +
    + If you want to compile this as a module ( = code which can be
    + inserted in and removed from the running kernel whenever you want),
    + say M here and read Documentation/modules.txt. The module will be
    + called umsdos.o.
    +
    + Note that the filesystem of your root partition (the one containing
    + the directory /) cannot be a module, so saying M could be dangerous.
    + If unsure, say N.

    /proc filesystem support
    CONFIG_PROC_FS
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