drbd: disambiguation, s/DISCARD_CONCURRENT/RESOLVE_CONFLICTS/

We don't discard anything here, really.
We resolve conflicting, concurrent writes to overlapping data blocks.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index 91b7324..813f50d 100644 (file)
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -799,7 +799,7 @@ extern struct fifo_buffer *fifo_alloc(int fifo_size);
 /* flag bits per tconn */
 enum {
        NET_CONGESTED,          /* The data socket is congested */
-       DISCARD_CONCURRENT,     /* Set on one node, cleared on the peer! */
+       RESOLVE_CONFLICTS,      /* Set on one node, cleared on the peer! */
        SEND_PING,              /* whether asender should send a ping asap */
        SIGNAL_ASENDER,         /* whether asender wants to be interrupted */
        GOT_PING_ACK,           /* set when we receive a ping_ack packet, ping_wait gets woken */

diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index 466d6b1..35bb572 100644 (file)
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -2249,7 +2249,7 @@ void resync_after_online_grow(struct drbd_conf *mdev)
        if (mdev->state.role != mdev->state.peer)
                iass = (mdev->state.role == R_PRIMARY);
        else
-               iass = test_bit(DISCARD_CONCURRENT, &mdev->tconn->flags);
+               iass = test_bit(RESOLVE_CONFLICTS, &mdev->tconn->flags);
 
        if (iass)
                drbd_start_resync(mdev, C_SYNC_SOURCE);

diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index afab66b..9912107 100644 (file)
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -916,7 +916,7 @@ static int conn_connect(struct drbd_tconn *tconn)
                                sock.socket = s;
                                send_first_packet(tconn, &sock, P_INITIAL_DATA);
                        } else if (!msock.socket) {
-                               clear_bit(DISCARD_CONCURRENT, &tconn->flags);
+                               clear_bit(RESOLVE_CONFLICTS, &tconn->flags);
                                msock.socket = s;
                                send_first_packet(tconn, &msock, P_INITIAL_META);
                        } else {
@@ -954,7 +954,7 @@ retry:
                                sock.socket = s;
                                break;
                        case P_INITIAL_META:
-                               set_bit(DISCARD_CONCURRENT, &tconn->flags);
+                               set_bit(RESOLVE_CONFLICTS, &tconn->flags);
                                if (msock.socket) {
                                        conn_warn(tconn, "initial packet M crossed\n");
                                        sock_release(msock.socket);
@@ -1899,7 +1899,7 @@ static bool need_peer_seq(struct drbd_conf *mdev)
 
        /*
         * We only need to keep track of the last packet_seq number of our peer
-        * if we are in dual-primary mode and we have the discard flag set; see
+        * if we are in dual-primary mode and we have the resolve-conflicts flag set; see
         * handle_write_conflicts().
         */
 
@@ -1907,7 +1907,7 @@ static bool need_peer_seq(struct drbd_conf *mdev)
        tp = rcu_dereference(mdev->tconn->net_conf)->two_primaries;
        rcu_read_unlock();
 
-       return tp && test_bit(DISCARD_CONCURRENT, &tconn->flags);
+       return tp && test_bit(RESOLVE_CONFLICTS, &tconn->flags);
 }
 
 static void update_peer_seq(struct drbd_conf *mdev, unsigned int peer_seq)
@@ -2048,7 +2048,7 @@ static int handle_write_conflicts(struct drbd_conf *mdev,
                                  struct drbd_peer_request *peer_req)
 {
        struct drbd_tconn *tconn = mdev->tconn;
-       bool resolve_conflicts = test_bit(DISCARD_CONCURRENT, &tconn->flags);
+       bool resolve_conflicts = test_bit(RESOLVE_CONFLICTS, &tconn->flags);
        sector_t sector = peer_req->i.sector;
        const unsigned int size = peer_req->i.size;
        struct drbd_interval *i;
@@ -2600,7 +2600,7 @@ static int drbd_asb_recover_0p(struct drbd_conf *mdev) __must_hold(local)
                     "Using discard-least-changes instead\n");
        case ASB_DISCARD_ZERO_CHG:
                if (ch_peer == 0 && ch_self == 0) {
-                       rv = test_bit(DISCARD_CONCURRENT, &mdev->tconn->flags)
+                       rv = test_bit(RESOLVE_CONFLICTS, &mdev->tconn->flags)
                                ? -1 : 1;
                        break;
                } else {
@@ -2616,7 +2616,7 @@ static int drbd_asb_recover_0p(struct drbd_conf *mdev) __must_hold(local)
                        rv =  1;
                else /* ( ch_self == ch_peer ) */
                     /* Well, then use something else. */
-                       rv = test_bit(DISCARD_CONCURRENT, &mdev->tconn->flags)
+                       rv = test_bit(RESOLVE_CONFLICTS, &mdev->tconn->flags)
                                ? -1 : 1;
                break;
        case ASB_DISCARD_LOCAL:
@@ -2839,7 +2839,7 @@ static int drbd_uuid_compare(struct drbd_conf *mdev, int *rule_nr) __must_hold(l
                case 1: /*  self_pri && !peer_pri */ return 1;
                case 2: /* !self_pri &&  peer_pri */ return -1;
                case 3: /*  self_pri &&  peer_pri */
-                       dc = test_bit(DISCARD_CONCURRENT, &mdev->tconn->flags);
+                       dc = test_bit(RESOLVE_CONFLICTS, &mdev->tconn->flags);
                        return dc ? -1 : 1;
                }
        }
@@ -3775,7 +3775,7 @@ static int receive_req_state(struct drbd_tconn *tconn, struct packet_info *pi)
        mask.i = be32_to_cpu(p->mask);
        val.i = be32_to_cpu(p->val);
 
-       if (test_bit(DISCARD_CONCURRENT, &mdev->tconn->flags) &&
+       if (test_bit(RESOLVE_CONFLICTS, &mdev->tconn->flags) &&
            mutex_is_locked(mdev->state_mutex)) {
                drbd_send_sr_reply(mdev, SS_CONCURRENT_ST_CHG);
                return 0;
@@ -3801,7 +3801,7 @@ static int receive_req_conn_state(struct drbd_tconn *tconn, struct packet_info *
        mask.i = be32_to_cpu(p->mask);
        val.i = be32_to_cpu(p->val);
 
-       if (test_bit(DISCARD_CONCURRENT, &tconn->flags) &&
+       if (test_bit(RESOLVE_CONFLICTS, &tconn->flags) &&
            mutex_is_locked(&tconn->cstate_mutex)) {
                conn_send_sr_reply(tconn, SS_CONCURRENT_ST_CHG);
                return 0;