There is no reason why task in balance_dirty_pages() shouldn't be killable and it helps in recovering from some error conditions (like when filesystem goes in error state and cannot accept writeback anymore but we still want to kill processes using it to be able to unmount it). Reported-by: Kazuya Mio <k-mio@xxxxxxxxxxxxx> Tested-by: Kazuya Mio <k-mio@xxxxxxxxxxxxx> Signed-off-by: Jan Kara <jack@xxxxxxx> --- mm/page-writeback.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 0360d1b..e83c286 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -1133,8 +1133,10 @@ pause: pages_dirtied, pause, start_time); - __set_current_state(TASK_UNINTERRUPTIBLE); + __set_current_state(TASK_KILLABLE); io_schedule_timeout(pause); + if (fatal_signal_pending(current)) + break; dirty_thresh = hard_dirty_limit(dirty_thresh); /* -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
