diff options
| author | David Howells <dhowells@redhat.com> | 2018-10-20 00:57:59 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2018-10-24 00:41:09 +0100 |
| commit | 3bf0fb6f33dd545693da5e65f5b1b9b9f0bfc35e (patch) | |
| tree | df215e6a6ad11b6ac8158461144667e168591d28 /fs/afs/vl_list.c | |
| parent | 18ac61853cc4e44eb30e125fc8344a3b25c7b6fe (diff) | |
| download | blackbird-op-linux-3bf0fb6f33dd545693da5e65f5b1b9b9f0bfc35e.tar.gz blackbird-op-linux-3bf0fb6f33dd545693da5e65f5b1b9b9f0bfc35e.zip | |
afs: Probe multiple fileservers simultaneously
Send probes to all the unprobed fileservers in a fileserver list on all
addresses simultaneously in an attempt to find out the fastest route whilst
not getting stuck for 20s on any server or address that we don't get a
reply from.
This alleviates the problem whereby attempting to access a new server can
take a long time because the rotation algorithm ends up rotating through
all servers and addresses until it finds one that responds.
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'fs/afs/vl_list.c')
| -rw-r--r-- | fs/afs/vl_list.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/afs/vl_list.c b/fs/afs/vl_list.c index c1e316ba105a..b4f1a84519b9 100644 --- a/fs/afs/vl_list.c +++ b/fs/afs/vl_list.c @@ -23,6 +23,8 @@ struct afs_vlserver *afs_alloc_vlserver(const char *name, size_t name_len, if (vlserver) { atomic_set(&vlserver->usage, 1); rwlock_init(&vlserver->lock); + init_waitqueue_head(&vlserver->probe_wq); + spin_lock_init(&vlserver->probe_lock); vlserver->name_len = name_len; vlserver->port = port; memcpy(vlserver->name, name, name_len); @@ -141,7 +143,7 @@ static struct afs_addr_list *afs_extract_vl_addrs(const u8 **_b, const u8 *end, /* Start with IPv6 if available. */ if (alist->nr_ipv4 < alist->nr_addrs) - alist->index = alist->nr_ipv4; + alist->preferred = alist->nr_ipv4; *_b = b; return alist; @@ -307,6 +309,8 @@ struct afs_vlserver_list *afs_extract_vlserver_list(struct afs_cell *cell, (vllist->nr_servers - j) * sizeof(struct afs_vlserver_entry)); } + clear_bit(AFS_VLSERVER_FL_PROBED, &server->flags); + vllist->servers[j].priority = bs.priority; vllist->servers[j].weight = bs.weight; vllist->servers[j].server = server; |
