• Mark Lord's avatar
    block: Prevent hang_check firing during long I/O · 4b197769
    Mark Lord authored
    During long I/O operations, the hang_check timer may fire,
    trigger stack dumps that unnecessarily alarm the user.
    
    Eg.  hdparm --security-erase NULL /dev/sdb  ## can take *hours* to complete
    
    So, if hang_check is armed, we should wake up periodically
    to prevent it from triggering.  This patch uses a wake-up interval
    equal to half the hang_check timer period, which keeps overhead low enough.
    Signed-off-by: default avatarMark Lord <mlord@pobox.com>
    Signed-off-by: default avatarJens Axboe <jaxboe@fusionio.com>
    4b197769
blk-exec.c 2.86 KB