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path: root/drivers/block/drbd/drbd_receiver.c
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Diffstat (limited to 'drivers/block/drbd/drbd_receiver.c')
-rw-r--r--drivers/block/drbd/drbd_receiver.c135
1 files changed, 29 insertions, 106 deletions
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index ec1711f..081522d 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -1180,7 +1180,7 @@ next_bio:
bio->bi_sector = sector;
bio->bi_bdev = mdev->ldev->backing_bdev;
/* we special case some flags in the multi-bio case, see below
- * (BIO_RW_UNPLUG, BIO_RW_BARRIER) */
+ * (REQ_UNPLUG, REQ_HARDBARRIER) */
bio->bi_rw = rw;
bio->bi_private = e;
bio->bi_end_io = drbd_endio_sec;
@@ -1209,16 +1209,16 @@ next_bio:
bios = bios->bi_next;
bio->bi_next = NULL;
- /* strip off BIO_RW_UNPLUG unless it is the last bio */
+ /* strip off REQ_UNPLUG unless it is the last bio */
if (bios)
- bio->bi_rw &= ~(1<<BIO_RW_UNPLUG);
+ bio->bi_rw &= ~REQ_UNPLUG;
drbd_generic_make_request(mdev, fault_type, bio);
- /* strip off BIO_RW_BARRIER,
+ /* strip off REQ_HARDBARRIER,
* unless it is the first or last bio */
if (bios && bios->bi_next)
- bios->bi_rw &= ~(1<<BIO_RW_BARRIER);
+ bios->bi_rw &= ~REQ_HARDBARRIER;
} while (bios);
maybe_kick_lo(mdev);
return 0;
@@ -1233,7 +1233,7 @@ fail:
}
/**
- * w_e_reissue() - Worker callback; Resubmit a bio, without BIO_RW_BARRIER set
+ * w_e_reissue() - Worker callback; Resubmit a bio, without REQ_HARDBARRIER set
* @mdev: DRBD device.
* @w: work object.
* @cancel: The connection will be closed anyways (unused in this callback)
@@ -1245,7 +1245,7 @@ int w_e_reissue(struct drbd_conf *mdev, struct drbd_work *w, int cancel) __relea
(and DE_BARRIER_IN_NEXT_EPOCH_ISSUED in the previous Epoch)
so that we can finish that epoch in drbd_may_finish_epoch().
That is necessary if we already have a long chain of Epochs, before
- we realize that BIO_RW_BARRIER is actually not supported */
+ we realize that REQ_HARDBARRIER is actually not supported */
/* As long as the -ENOTSUPP on the barrier is reported immediately
that will never trigger. If it is reported late, we will just
@@ -1824,14 +1824,14 @@ static int receive_Data(struct drbd_conf *mdev, struct p_header *h)
epoch = list_entry(e->epoch->list.prev, struct drbd_epoch, list);
if (epoch == e->epoch) {
set_bit(DE_CONTAINS_A_BARRIER, &e->epoch->flags);
- rw |= (1<<BIO_RW_BARRIER);
+ rw |= REQ_HARDBARRIER;
e->flags |= EE_IS_BARRIER;
} else {
if (atomic_read(&epoch->epoch_size) > 1 ||
!test_bit(DE_CONTAINS_A_BARRIER, &epoch->flags)) {
set_bit(DE_BARRIER_IN_NEXT_EPOCH_ISSUED, &epoch->flags);
set_bit(DE_CONTAINS_A_BARRIER, &e->epoch->flags);
- rw |= (1<<BIO_RW_BARRIER);
+ rw |= REQ_HARDBARRIER;
e->flags |= EE_IS_BARRIER;
}
}
@@ -1841,10 +1841,10 @@ static int receive_Data(struct drbd_conf *mdev, struct p_header *h)
dp_flags = be32_to_cpu(p->dp_flags);
if (dp_flags & DP_HARDBARRIER) {
dev_err(DEV, "ASSERT FAILED would have submitted barrier request\n");
- /* rw |= (1<<BIO_RW_BARRIER); */
+ /* rw |= REQ_HARDBARRIER; */
}
if (dp_flags & DP_RW_SYNC)
- rw |= (1<<BIO_RW_SYNCIO) | (1<<BIO_RW_UNPLUG);
+ rw |= REQ_SYNC | REQ_UNPLUG;
if (dp_flags & DP_MAY_SET_IN_SYNC)
e->flags |= EE_MAY_SET_IN_SYNC;
@@ -3555,14 +3555,15 @@ static int receive_bitmap(struct drbd_conf *mdev, struct p_header *h)
return ok;
}
-static int receive_skip(struct drbd_conf *mdev, struct p_header *h)
+static int receive_skip_(struct drbd_conf *mdev, struct p_header *h, int silent)
{
/* TODO zero copy sink :) */
static char sink[128];
int size, want, r;
- dev_warn(DEV, "skipping unknown optional packet type %d, l: %d!\n",
- h->command, h->length);
+ if (!silent)
+ dev_warn(DEV, "skipping unknown optional packet type %d, l: %d!\n",
+ h->command, h->length);
size = h->length;
while (size > 0) {
@@ -3574,101 +3575,25 @@ static int receive_skip(struct drbd_conf *mdev, struct p_header *h)
return size == 0;
}
-static int receive_UnplugRemote(struct drbd_conf *mdev, struct p_header *h)
-{
- if (mdev->state.disk >= D_INCONSISTENT)
- drbd_kick_lo(mdev);
-
- /* Make sure we've acked all the TCP data associated
- * with the data requests being unplugged */
- drbd_tcp_quickack(mdev->data.socket);
-
- return TRUE;
-}
-
-static void timeval_sub_us(struct timeval* tv, unsigned int us)
+static int receive_skip(struct drbd_conf *mdev, struct p_header *h)
{
- tv->tv_sec -= us / 1000000;
- us = us % 1000000;
- if (tv->tv_usec > us) {
- tv->tv_usec += 1000000;
- tv->tv_sec--;
- }
- tv->tv_usec -= us;
+ return receive_skip_(mdev, h, 0);
}
-static void got_delay_probe(struct drbd_conf *mdev, int from, struct p_delay_probe *p)
+static int receive_skip_silent(struct drbd_conf *mdev, struct p_header *h)
{
- struct delay_probe *dp;
- struct list_head *le;
- struct timeval now;
- int seq_num;
- int offset;
- int data_delay;
-
- seq_num = be32_to_cpu(p->seq_num);
- offset = be32_to_cpu(p->offset);
-
- spin_lock(&mdev->peer_seq_lock);
- if (!list_empty(&mdev->delay_probes)) {
- if (from == USE_DATA_SOCKET)
- le = mdev->delay_probes.next;
- else
- le = mdev->delay_probes.prev;
-
- dp = list_entry(le, struct delay_probe, list);
-
- if (dp->seq_num == seq_num) {
- list_del(le);
- spin_unlock(&mdev->peer_seq_lock);
- do_gettimeofday(&now);
- timeval_sub_us(&now, offset);
- data_delay =
- now.tv_usec - dp->time.tv_usec +
- (now.tv_sec - dp->time.tv_sec) * 1000000;
-
- if (data_delay > 0)
- mdev->data_delay = data_delay;
-
- kfree(dp);
- return;
- }
-
- if (dp->seq_num > seq_num) {
- spin_unlock(&mdev->peer_seq_lock);
- dev_warn(DEV, "Previous allocation failure of struct delay_probe?\n");
- return; /* Do not alloca a struct delay_probe.... */
- }
- }
- spin_unlock(&mdev->peer_seq_lock);
-
- dp = kmalloc(sizeof(struct delay_probe), GFP_NOIO);
- if (!dp) {
- dev_warn(DEV, "Failed to allocate a struct delay_probe, do not worry.\n");
- return;
- }
-
- dp->seq_num = seq_num;
- do_gettimeofday(&dp->time);
- timeval_sub_us(&dp->time, offset);
-
- spin_lock(&mdev->peer_seq_lock);
- if (from == USE_DATA_SOCKET)
- list_add(&dp->list, &mdev->delay_probes);
- else
- list_add_tail(&dp->list, &mdev->delay_probes);
- spin_unlock(&mdev->peer_seq_lock);
+ return receive_skip_(mdev, h, 1);
}
-static int receive_delay_probe(struct drbd_conf *mdev, struct p_header *h)
+static int receive_UnplugRemote(struct drbd_conf *mdev, struct p_header *h)
{
- struct p_delay_probe *p = (struct p_delay_probe *)h;
+ if (mdev->state.disk >= D_INCONSISTENT)
+ drbd_kick_lo(mdev);
- ERR_IF(h->length != (sizeof(*p)-sizeof(*h))) return FALSE;
- if (drbd_recv(mdev, h->payload, h->length) != h->length)
- return FALSE;
+ /* Make sure we've acked all the TCP data associated
+ * with the data requests being unplugged */
+ drbd_tcp_quickack(mdev->data.socket);
- got_delay_probe(mdev, USE_DATA_SOCKET, p);
return TRUE;
}
@@ -3695,7 +3620,7 @@ static drbd_cmd_handler_f drbd_default_handler[] = {
[P_OV_REQUEST] = receive_DataRequest,
[P_OV_REPLY] = receive_DataRequest,
[P_CSUM_RS_REQUEST] = receive_DataRequest,
- [P_DELAY_PROBE] = receive_delay_probe,
+ [P_DELAY_PROBE] = receive_skip_silent,
/* anything missing from this table is in
* the asender_tbl, see get_asender_cmd */
[P_MAX_CMD] = NULL,
@@ -4472,11 +4397,9 @@ static int got_OVResult(struct drbd_conf *mdev, struct p_header *h)
return TRUE;
}
-static int got_delay_probe_m(struct drbd_conf *mdev, struct p_header *h)
+static int got_something_to_ignore_m(struct drbd_conf *mdev, struct p_header *h)
{
- struct p_delay_probe *p = (struct p_delay_probe *)h;
-
- got_delay_probe(mdev, USE_META_SOCKET, p);
+ /* IGNORE */
return TRUE;
}
@@ -4504,7 +4427,7 @@ static struct asender_cmd *get_asender_cmd(int cmd)
[P_BARRIER_ACK] = { sizeof(struct p_barrier_ack), got_BarrierAck },
[P_STATE_CHG_REPLY] = { sizeof(struct p_req_state_reply), got_RqSReply },
[P_RS_IS_IN_SYNC] = { sizeof(struct p_block_ack), got_IsInSync },
- [P_DELAY_PROBE] = { sizeof(struct p_delay_probe), got_delay_probe_m },
+ [P_DELAY_PROBE] = { sizeof(struct p_delay_probe), got_something_to_ignore_m },
[P_MAX_CMD] = { 0, NULL },
};
if (cmd > P_MAX_CMD || asender_tbl[cmd].process == NULL)
generated by cgit v1.1 at 2024-12-27 08:39:08 +0000