blk_needs_flush_plug 2134 fs/fs-writeback.c 	if (blk_needs_flush_plug(current))
blk_needs_flush_plug  719 kernel/exit.c  	WARN_ON(blk_needs_flush_plug(tsk));
blk_needs_flush_plug 4127 kernel/sched/core.c 	if (blk_needs_flush_plug(tsk))