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authorJens Axboe <jens.axboe@oracle.com>2007-10-16 11:05:02 +0200
committerJens Axboe <jens.axboe@oracle.com>2007-10-16 11:05:02 +0200
commitfd5d806266935179deda1502101624832eacd01f (patch)
treeb0d01c2ed7d754f2a6daef6c77d108a81d8a470e /drivers/md/raid10.c
parentbf2de6f5a4faf0197268f18d08969b003b87b6e8 (diff)
downloadop-kernel-dev-fd5d806266935179deda1502101624832eacd01f.zip
op-kernel-dev-fd5d806266935179deda1502101624832eacd01f.tar.gz
block: convert blkdev_issue_flush() to use empty barriers
Then we can get rid of ->issue_flush_fn() and all the driver private implementations of that. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/md/raid10.c')
-rw-r--r--drivers/md/raid10.c31
1 files changed, 0 insertions, 31 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 25a96c4..fc6607a 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -611,36 +611,6 @@ static void raid10_unplug(struct request_queue *q)
md_wakeup_thread(mddev->thread);
}
-static int raid10_issue_flush(struct request_queue *q, struct gendisk *disk,
- sector_t *error_sector)
-{
- mddev_t *mddev = q->queuedata;
- conf_t *conf = mddev_to_conf(mddev);
- int i, ret = 0;
-
- rcu_read_lock();
- for (i=0; i<mddev->raid_disks && ret == 0; i++) {
- mdk_rdev_t *rdev = rcu_dereference(conf->mirrors[i].rdev);
- if (rdev && !test_bit(Faulty, &rdev->flags)) {
- struct block_device *bdev = rdev->bdev;
- struct request_queue *r_queue = bdev_get_queue(bdev);
-
- if (!r_queue->issue_flush_fn)
- ret = -EOPNOTSUPP;
- else {
- atomic_inc(&rdev->nr_pending);
- rcu_read_unlock();
- ret = r_queue->issue_flush_fn(r_queue, bdev->bd_disk,
- error_sector);
- rdev_dec_pending(rdev, mddev);
- rcu_read_lock();
- }
- }
- }
- rcu_read_unlock();
- return ret;
-}
-
static int raid10_congested(void *data, int bits)
{
mddev_t *mddev = data;
@@ -2118,7 +2088,6 @@ static int run(mddev_t *mddev)
mddev->resync_max_sectors = size << conf->chunk_shift;
mddev->queue->unplug_fn = raid10_unplug;
- mddev->queue->issue_flush_fn = raid10_issue_flush;
mddev->queue->backing_dev_info.congested_fn = raid10_congested;
mddev->queue->backing_dev_info.congested_data = mddev;
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