blk_plug_cb_fn 1736 block/blk-core.c struct blk_plug_cb *blk_check_plugged(blk_plug_cb_fn unplug, void *data, blk_plug_cb_fn 1173 include/linux/blkdev.h typedef void (*blk_plug_cb_fn)(struct blk_plug_cb *, bool); blk_plug_cb_fn 1176 include/linux/blkdev.h blk_plug_cb_fn callback; blk_plug_cb_fn 1179 include/linux/blkdev.h extern struct blk_plug_cb *blk_check_plugged(blk_plug_cb_fn unplug,