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block: convert blkdev_issue_flush() to use empty barriers

Browse source 
Then we can get rid of ->issue_flush_fn() and all the driver private
implementations of that.

Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Jens Axboe 2007-10-16 11:05:02 +02:00
commit fd5d806266
16 changed files with 36 additions and 329 deletions
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21
drivers/block/ps3disk.c
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@ -414,26 +414,6 @@ static void ps3disk_prepare_flush(struct request_queue *q, struct request *req)
req->cmd_type = REQ_TYPE_FLUSH;
}
static int ps3disk_issue_flush(struct request_queue *q, struct gendisk *gendisk,
sector_t *sector)
{
struct ps3_storage_device *dev = q->queuedata;
struct request *req;
int res;
dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__);
req = blk_get_request(q, WRITE, __GFP_WAIT);
ps3disk_prepare_flush(q, req);
res = blk_execute_rq(q, gendisk, req, 0);
if (res)
dev_err(&dev->sbd.core, "%s:%u: flush request failed %d\n",
__func__, __LINE__, res);
blk_put_request(req);
return res;
}
static unsigned long ps3disk_mask;
static DEFINE_MUTEX(ps3disk_mask_mutex);
@ -506,7 +486,6 @@ static int __devinit ps3disk_probe(struct ps3_system_bus_device *_dev)
blk_queue_dma_alignment(queue, dev->blk_size-1);
blk_queue_hardsect_size(queue, dev->blk_size);
blk_queue_issue_flush_fn(queue, ps3disk_issue_flush);
blk_queue_ordered(queue, QUEUE_ORDERED_DRAIN_FLUSH,
ps3disk_prepare_flush);