[PATCH 2/9] block: permit PREFLUSH and POSTFLUSH without prepare_flush_fn
in [Kernel]
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From: FUJITA Tomonori on 3 Jul 2010 04:50 This is preparation for removing q->prepare_flush_fn. Temporarily, blk_queue_ordered() permits QUEUE_ORDERED_DO_PREFLUSH and QUEUE_ORDERED_DO_POSTFLUSH without prepare_flush_fn. Signed-off-by: FUJITA Tomonori <fujita.tomonori(a)lab.ntt.co.jp> --- block/blk-barrier.c | 9 ++------- 1 files changed, 2 insertions(+), 7 deletions(-) diff --git a/block/blk-barrier.c b/block/blk-barrier.c index a348242..7ce0a32 100644 --- a/block/blk-barrier.c +++ b/block/blk-barrier.c @@ -25,12 +25,6 @@ int blk_queue_ordered(struct request_queue *q, unsigned ordered, prepare_flush_fn *prepare_flush_fn) { - if (!prepare_flush_fn && (ordered & (QUEUE_ORDERED_DO_PREFLUSH | - QUEUE_ORDERED_DO_POSTFLUSH))) { - printk(KERN_ERR "%s: prepare_flush_fn required\n", __func__); - return -EINVAL; - } - if (ordered != QUEUE_ORDERED_NONE && ordered != QUEUE_ORDERED_DRAIN && ordered != QUEUE_ORDERED_DRAIN_FLUSH && @@ -146,7 +140,8 @@ static void queue_flush(struct request_queue *q, unsigned which) rq->cmd_flags = REQ_HARDBARRIER | REQ_FLUSH; rq->rq_disk = q->bar_rq.rq_disk; rq->end_io = end_io; - q->prepare_flush_fn(q, rq); + if (q->prepare_flush_fn) + q->prepare_flush_fn(q, rq); elv_insert(q, rq, ELEVATOR_INSERT_FRONT); } -- 1.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |