diff options
| -rw-r--r-- | drivers/block/drbd/drbd_worker.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c index 6532a69..0b5e429 100644 --- a/drivers/block/drbd/drbd_worker.c +++ b/drivers/block/drbd/drbd_worker.c @@ -592,7 +592,7 @@ static int make_resync_request(struct drbd_device *const device, int cancel) const sector_t capacity = drbd_get_capacity(device->this_bdev); int max_bio_size; int number, rollback_i, size; - int align, queued, sndbuf; + int align, requeue = 0; int i = 0; if (unlikely(cancel)) @@ -619,17 +619,22 @@ static int make_resync_request(struct drbd_device *const device, int cancel) goto requeue; for (i = 0; i < number; i++) { - /* Stop generating RS requests, when half of the send buffer is filled */ + /* Stop generating RS requests when half of the send buffer is filled, + * but notify TCP that we'd like to have more space. */ mutex_lock(&connection->data.mutex); if (connection->data.socket) { - queued = connection->data.socket->sk->sk_wmem_queued; - sndbuf = connection->data.socket->sk->sk_sndbuf; - } else { - queued = 1; - sndbuf = 0; - } + struct sock *sk = connection->data.socket->sk; + int queued = sk->sk_wmem_queued; + int sndbuf = sk->sk_sndbuf; + if (queued > sndbuf / 2) { + requeue = 1; + if (sk->sk_socket) + set_bit(SOCK_NOSPACE, &sk->sk_socket->flags); + } + } else + requeue = 1; mutex_unlock(&connection->data.mutex); - if (queued > sndbuf / 2) + if (requeue) goto requeue; next_sector: |