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    Subject[PATCH v3] TMPFS: Expand help to explain value of TMPFS_POSIX_ACL

    Expand the fs/Kconfig "help" info to clarify why you might need to
    select the TMPFS_POSIX_ACL config variable.

    Signed-off-by: Robert P. J. Day <>


    diff --git a/fs/Kconfig b/fs/Kconfig
    index 19891aa..bd56bf6 100644
    --- a/fs/Kconfig
    +++ b/fs/Kconfig
    @@ -127,14 +127,21 @@ config TMPFS_POSIX_ACL
    select TMPFS_XATTR
    select GENERIC_ACL
    - POSIX Access Control Lists (ACLs) support permissions for users and
    - groups beyond the owner/group/world scheme.
    + POSIX Access Control Lists (ACLs) support additional access rights
    + for users and groups beyond the standard owner/group/world scheme,
    + and this option selects support for ACLs specifically for tmpfs
    + filesystems.
    + If you've selected TMPFS, it's possible that you'll also need
    + this option as there are a number of Linux distros that require
    + POSIX ACL support under /dev for certain features to work properly.
    + For example, some distros need this feature for ALSA-related /dev
    + files for sound to work properly. In short, if you're not sure,
    + say Y.
    To learn more about Access Control Lists, visit the POSIX ACLs for
    Linux website <>.

    - If you don't know what Access Control Lists are, say N.
    config TMPFS_XATTR
    bool "Tmpfs extended attributes"
    depends on TMPFS

    Robert P. J. Day Ottawa, Ontario, CANADA

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