dma_drain_size 524 block/blk-merge.c if (q->dma_drain_size && q->dma_drain_needed(rq)) { dma_drain_size 526 block/blk-merge.c memset(q->dma_drain_buffer, 0, q->dma_drain_size); dma_drain_size 531 block/blk-merge.c q->dma_drain_size, dma_drain_size 535 block/blk-merge.c rq->extra_len += q->dma_drain_size; dma_drain_size 696 block/blk-mq.c if (q->dma_drain_size && blk_rq_bytes(rq)) { dma_drain_size 724 block/blk-mq.c if (q->dma_drain_size && blk_rq_bytes(rq)) dma_drain_size 721 block/blk-settings.c q->dma_drain_size = size; dma_drain_size 1375 drivers/ata/libata-scsi.c q->dma_drain_size = 0; dma_drain_size 479 include/linux/blkdev.h unsigned int dma_drain_size;