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authorLars Ellenberg <lars.ellenberg@linbit.com>2013-03-22 18:14:40 -0600
committerJens Axboe <axboe@kernel.dk>2013-03-22 18:14:40 -0600
commit113fef9e20e0d614b3f5940b67c96e719c559eea (patch)
treed116430f48e02c1a502df613e786787a36739552 /drivers/block/drbd/drbd_req.c
parent6d9febe237146156947f0da8407c620b5c33c1df (diff)
downloadvexpress-lsk-113fef9e20e0d614b3f5940b67c96e719c559eea.tar.gz
drbd: prepare to queue write requests on a submit worker
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block/drbd/drbd_req.c')
-rw-r--r--drivers/block/drbd/drbd_req.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c
index 96d5968fc1e..4af709e0aae 100644
--- a/drivers/block/drbd/drbd_req.c
+++ b/drivers/block/drbd/drbd_req.c
@@ -1160,6 +1160,35 @@ void __drbd_make_request(struct drbd_conf *mdev, struct bio *bio, unsigned long
drbd_send_and_submit(mdev, req);
}
+void __drbd_make_request_from_worker(struct drbd_conf *mdev, struct drbd_request *req)
+{
+ const int rw = bio_rw(req->master_bio);
+
+ if (rw == WRITE && req->private_bio && req->i.size
+ && !test_bit(AL_SUSPENDED, &mdev->flags)) {
+ drbd_al_begin_io(mdev, &req->i, false);
+ req->rq_state |= RQ_IN_ACT_LOG;
+ }
+ drbd_send_and_submit(mdev, req);
+}
+
+
+void do_submit(struct work_struct *ws)
+{
+ struct drbd_conf *mdev = container_of(ws, struct drbd_conf, submit.worker);
+ LIST_HEAD(writes);
+ struct drbd_request *req, *tmp;
+
+ spin_lock(&mdev->submit.lock);
+ list_splice_init(&mdev->submit.writes, &writes);
+ spin_unlock(&mdev->submit.lock);
+
+ list_for_each_entry_safe(req, tmp, &writes, tl_requests) {
+ list_del_init(&req->tl_requests);
+ __drbd_make_request_from_worker(mdev, req);
+ }
+}
+
void drbd_make_request(struct request_queue *q, struct bio *bio)
{
struct drbd_conf *mdev = (struct drbd_conf *) q->queuedata;