• Mikulas Patocka's avatar
    dm stats: initialize read-only module parameter · 76f5bee5
    Mikulas Patocka authored
    The module parameter stats_current_allocated_bytes in dm-mod is
    read-only.  This parameter informs the user about memory
    consumption.  It is not supposed to be changed by the user.
    
    However, despite being read-only, this parameter can be set on
    modprobe or insmod command line:
    modprobe dm-mod stats_current_allocated_bytes=12345
    
    The kernel doesn't expect that this variable can be non-zero at module
    initialization and if the user sets it, it results in warning.
    
    This patch initializes the variable in the module init routine, so
    that user-supplied value is ignored.
    Signed-off-by: default avatarMikulas Patocka <mpatocka@redhat.com>
    Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
    Cc: stable@vger.kernel.org # 3.12+
    76f5bee5
dm-stats.c 23.5 KB