diff options
| author | Philipp Reisner <philipp.reisner@linbit.com> | 2010-07-21 10:20:17 +0200 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2010-10-14 18:38:15 +0200 |
| commit | 85719573dd716bc2ac3e098b44adfed884250bab (patch) | |
| tree | 494e7797c923c7c584dc3c16d4d6ab2fcd6996a0 /drivers/block/drbd | |
| parent | d207450cf2731c6a2afa8c78fb31c7206cd35eba (diff) | |
| download | linux-85719573dd716bc2ac3e098b44adfed884250bab.tar.bz2 | |
drbd: Replaced some casts by an union. Improved comments
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers/block/drbd')
| -rw-r--r-- | drivers/block/drbd/drbd_int.h | 13 | ||||
| -rw-r--r-- | drivers/block/drbd/drbd_receiver.c | 3 | ||||
| -rw-r--r-- | drivers/block/drbd/drbd_worker.c | 4 |
3 files changed, 12 insertions, 8 deletions
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h index facb72ccc56b..b0cbfa143775 100644 --- a/drivers/block/drbd/drbd_int.h +++ b/drivers/block/drbd/drbd_int.h @@ -759,7 +759,7 @@ struct digest_info { struct drbd_epoch_entry { struct drbd_work w; struct hlist_node colision; - struct drbd_epoch *epoch; + struct drbd_epoch *epoch; /* for writes */ struct drbd_conf *mdev; struct page *pages; atomic_t pending_bios; @@ -767,7 +767,10 @@ struct drbd_epoch_entry { /* see comments on ee flag bits below */ unsigned long flags; sector_t sector; - u64 block_id; + union { + u64 block_id; + struct digest_info *digest; + }; }; /* ee flag bits. @@ -1032,10 +1035,10 @@ struct drbd_conf { spinlock_t epoch_lock; unsigned int epochs; enum write_ordering_e write_ordering; - struct list_head active_ee; /* IO in progress */ - struct list_head sync_ee; /* IO in progress */ + struct list_head active_ee; /* IO in progress (P_DATA gets written to disk) */ + struct list_head sync_ee; /* IO in progress (P_RS_DATA_REPLY gets written to disk) */ struct list_head done_ee; /* send ack */ - struct list_head read_ee; /* IO in progress */ + struct list_head read_ee; /* IO in progress (any read) */ struct list_head net_ee; /* zero-copy network send in progress */ struct hlist_head *ee_hash; /* is proteced by req_lock! */ unsigned int ee_hash_s; diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c index 5f80b22e711d..0b03e3174f76 100644 --- a/drivers/block/drbd/drbd_receiver.c +++ b/drivers/block/drbd/drbd_receiver.c @@ -2097,7 +2097,7 @@ static int receive_DataRequest(struct drbd_conf *mdev, struct p_header *h) if (drbd_recv(mdev, di->digest, digest_size) != digest_size) goto out_free_e; - e->block_id = (u64)(unsigned long)di; + e->digest = di; if (h->command == P_CSUM_RS_REQUEST) { D_ASSERT(mdev->agreed_pro_version >= 89); e->w.cb = w_e_end_csum_rs_req; @@ -3769,6 +3769,7 @@ static void drbd_disconnect(struct drbd_conf *mdev) drbd_thread_stop(&mdev->asender); drbd_free_sock(mdev); + /* wait for current activity to cease. */ spin_lock_irq(&mdev->req_lock); _drbd_wait_ee_list_empty(mdev, &mdev->active_ee); _drbd_wait_ee_list_empty(mdev, &mdev->sync_ee); diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c index 30b8e466a224..f979e22cc6fb 100644 --- a/drivers/block/drbd/drbd_worker.c +++ b/drivers/block/drbd/drbd_worker.c @@ -1018,7 +1018,7 @@ int w_e_end_csum_rs_req(struct drbd_conf *mdev, struct drbd_work *w, int cancel) drbd_rs_complete_io(mdev, e->sector); - di = (struct digest_info *)(unsigned long)e->block_id; + di = e->digest; if (likely((e->flags & EE_WAS_ERROR) == 0)) { /* quick hack to try to avoid a race against reconfiguration. @@ -1126,7 +1126,7 @@ int w_e_end_ov_reply(struct drbd_conf *mdev, struct drbd_work *w, int cancel) * the resync lru has been cleaned up already */ drbd_rs_complete_io(mdev, e->sector); - di = (struct digest_info *)(unsigned long)e->block_id; + di = e->digest; if (likely((e->flags & EE_WAS_ERROR) == 0)) { digest_size = crypto_hash_digestsize(mdev->verify_tfm); |