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From: FUJITA Tomonori on 3 Jul 2010 04:50
REQ_FLUSH flag enables us to kill ps3disk_prepare_flush().

Signed-off-by: FUJITA Tomonori <fujita.tomonori(a)lab.ntt.co.jp>
---
drivers/block/ps3disk.c | 25 ++++++-------------------
1 files changed, 6 insertions(+), 19 deletions(-)

diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3disk.c
index 5f208c0..ab528a4 100644
--- a/drivers/block/ps3disk.c
+++ b/drivers/block/ps3disk.c
@@ -196,13 +196,12 @@ static void ps3disk_do_request(struct ps3_storage_device *dev,
dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__);

while ((req = blk_fetch_request(q))) {
- if (req->cmd_type == REQ_TYPE_FS) {
- if (ps3disk_submit_request_sg(dev, req))
- break;
- } else if (req->cmd_type == REQ_TYPE_LINUX_BLOCK &&
- req->cmd[0] == REQ_LB_OP_FLUSH) {
+ if (req->cmd_flags & REQ_FLUSH) {
if (ps3disk_submit_flush_request(dev, req))
break;
+ } else if (req->cmd_type == REQ_TYPE_FS) {
+ if (ps3disk_submit_request_sg(dev, req))
+ break;
} else {
blk_dump_rq_flags(req, DEVICE_NAME " bad request");
__blk_end_request_all(req, -EIO);
@@ -257,8 +256,7 @@ static irqreturn_t ps3disk_interrupt(int irq, void *data)
return IRQ_HANDLED;
}

- if (req->cmd_type == REQ_TYPE_LINUX_BLOCK &&
- req->cmd[0] == REQ_LB_OP_FLUSH) {
+ if (req->cmd_flags & REQ_FLUSH) {
read = 0;
op = "flush";
} else {
@@ -398,16 +396,6 @@ static int ps3disk_identify(struct ps3_storage_device *dev)
return 0;
}

-static void ps3disk_prepare_flush(struct request_queue *q, struct request *req)
-{
- struct ps3_storage_device *dev = q->queuedata;
-
- dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__);
-
- req->cmd_type = REQ_TYPE_LINUX_BLOCK;
- req->cmd[0] = REQ_LB_OP_FLUSH;
-}
-
static unsigned long ps3disk_mask;

static DEFINE_MUTEX(ps3disk_mask_mutex);
@@ -480,8 +468,7 @@ static int __devinit ps3disk_probe(struct ps3_system_bus_device *_dev)
blk_queue_dma_alignment(queue, dev->blk_size-1);
blk_queue_logical_block_size(queue, dev->blk_size);

- blk_queue_ordered(queue, QUEUE_ORDERED_DRAIN_FLUSH,
- ps3disk_prepare_flush);
+ blk_queue_ordered(queue, QUEUE_ORDERED_DRAIN_FLUSH, NULL);

blk_queue_max_segments(queue, -1);
blk_queue_max_segment_size(queue, dev->bounce_size);
--
1.6.5

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Prev: [PATCH -staging] slicoss: README update
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