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authorJens Axboe <jens.axboe@oracle.com>2007-10-16 13:05:02 +0400
committerJens Axboe <jens.axboe@oracle.com>2007-10-16 13:05:02 +0400
commitfd5d806266935179deda1502101624832eacd01f (patch)
treeb0d01c2ed7d754f2a6daef6c77d108a81d8a470e /drivers/md/raid1.c
parentbf2de6f5a4faf0197268f18d08969b003b87b6e8 (diff)
downloadlinux-fd5d806266935179deda1502101624832eacd01f.tar.xz
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/raid1.c')
-rw-r--r--drivers/md/raid1.c31
1 files changed, 0 insertions, 31 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 6d03bea6fa58..0bcefad82413 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -567,36 +567,6 @@ static void raid1_unplug(struct request_queue *q)
md_wakeup_thread(mddev->thread);
}
-static int raid1_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 raid1_congested(void *data, int bits)
{
mddev_t *mddev = data;
@@ -1997,7 +1967,6 @@ static int run(mddev_t *mddev)
mddev->array_size = mddev->size;
mddev->queue->unplug_fn = raid1_unplug;
- mddev->queue->issue_flush_fn = raid1_issue_flush;
mddev->queue->backing_dev_info.congested_fn = raid1_congested;
mddev->queue->backing_dev_info.congested_data = mddev;