diff options
Diffstat (limited to 'drivers/block/drbd/drbd_req.h')
| -rw-r--r-- | drivers/block/drbd/drbd_req.h | 36 |
1 files changed, 29 insertions, 7 deletions
diff --git a/drivers/block/drbd/drbd_req.h b/drivers/block/drbd/drbd_req.h index ab2bd09d54b4..32e2c3e6a813 100644 --- a/drivers/block/drbd/drbd_req.h +++ b/drivers/block/drbd/drbd_req.h @@ -82,14 +82,16 @@ enum drbd_req_event { to_be_submitted, /* XXX yes, now I am inconsistent... - * these two are not "events" but "actions" + * these are not "events" but "actions" * oh, well... */ queue_for_net_write, queue_for_net_read, + queue_for_send_oos, send_canceled, send_failed, handed_over_to_network, + oos_handed_to_network, connection_lost_while_pending, read_retry_remote_canceled, recv_acked_by_peer, @@ -289,7 +291,6 @@ static inline struct drbd_request *drbd_req_new(struct drbd_conf *mdev, req->epoch = 0; req->sector = bio_src->bi_sector; req->size = bio_src->bi_size; - req->start_time = jiffies; INIT_HLIST_NODE(&req->colision); INIT_LIST_HEAD(&req->tl_requests); INIT_LIST_HEAD(&req->w.list); @@ -321,6 +322,7 @@ extern int __req_mod(struct drbd_request *req, enum drbd_req_event what, struct bio_and_error *m); extern void complete_master_bio(struct drbd_conf *mdev, struct bio_and_error *m); +extern void request_timer_fn(unsigned long data); /* use this if you don't want to deal with calling complete_master_bio() * outside the spinlock, e.g. when walking some list on cleanup. */ @@ -338,23 +340,43 @@ static inline int _req_mod(struct drbd_request *req, enum drbd_req_event what) return rv; } -/* completion of master bio is outside of spinlock. - * If you need it irqsave, do it your self! - * Which means: don't use from bio endio callback. */ +/* completion of master bio is outside of our spinlock. + * We still may or may not be inside some irqs disabled section + * of the lower level driver completion callback, so we need to + * spin_lock_irqsave here. */ static inline int req_mod(struct drbd_request *req, enum drbd_req_event what) { + unsigned long flags; struct drbd_conf *mdev = req->mdev; struct bio_and_error m; int rv; - spin_lock_irq(&mdev->req_lock); + spin_lock_irqsave(&mdev->req_lock, flags); rv = __req_mod(req, what, &m); - spin_unlock_irq(&mdev->req_lock); + spin_unlock_irqrestore(&mdev->req_lock, flags); if (m.bio) complete_master_bio(mdev, &m); return rv; } + +static inline bool drbd_should_do_remote(union drbd_state s) +{ + return s.pdsk == D_UP_TO_DATE || + (s.pdsk >= D_INCONSISTENT && + s.conn >= C_WF_BITMAP_T && + s.conn < C_AHEAD); + /* Before proto 96 that was >= CONNECTED instead of >= C_WF_BITMAP_T. + That is equivalent since before 96 IO was frozen in the C_WF_BITMAP* + states. */ +} +static inline bool drbd_should_send_oos(union drbd_state s) +{ + return s.conn == C_AHEAD || s.conn == C_WF_BITMAP_S; + /* pdsk = D_INCONSISTENT as a consequence. Protocol 96 check not necessary + since we enter state C_AHEAD only if proto >= 96 */ +} + #endif |