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| author | Simon Rettberg | 2021-04-20 15:22:24 +0200 |
|---|---|---|
| committer | Simon Rettberg | 2021-04-20 15:22:24 +0200 |
| commit | 046d3878b760f17e534752541368f97497eceda2 (patch) | |
| tree | 60ef37e9d60446925513a854459a2cc933cfb72e | |
| parent | [KERNEL] Clean alt-server list first when connecting (diff) | |
| download | dnbd3-046d3878b760f17e534752541368f97497eceda2.tar.gz dnbd3-046d3878b760f17e534752541368f97497eceda2.tar.xz dnbd3-046d3878b760f17e534752541368f97497eceda2.zip | |
[KERNEL] Even more RTT fakery on manual server switch
| -rw-r--r-- | src/kernel/blk.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/src/kernel/blk.c b/src/kernel/blk.c index 21c49a8..82469f4 100644 --- a/src/kernel/blk.c +++ b/src/kernel/blk.c @@ -238,12 +238,19 @@ static int dnbd3_blk_ioctl(struct block_device *bdev, fmode_t mode, unsigned int } } else { /* switch succeeded */ - /* fake very low RTT so we don't switch away again soon */ + /* fake RTT so we don't switch away again soon */ mutex_lock(&dev->alt_servers_lock); - if (is_same_server(&alt_server->host, &new_addr)) { - alt_server->rtts[0] = alt_server->rtts[1] = alt_server->rtts[2] - = alt_server->rtts[3] = 4; - alt_server->best_count = 100; + for (i = 0; i < NUMBER_SERVERS; ++i) { + alt_server = &dev->alt_servers[i]; + if (is_same_server(&alt_server->host, &new_addr)) { + alt_server->rtts[0] = alt_server->rtts[1] = alt_server->rtts[2] + = alt_server->rtts[3] = 4; + alt_server->best_count = 100; + } else { + alt_server->rtts[0] <<= 2; + alt_server->rtts[2] <<= 2; + alt_server->best_count = 0; + } } mutex_unlock(&dev->alt_servers_lock); } |