diff options
Diffstat (limited to 'fs/afs/addr_list.c')
| -rw-r--r-- | fs/afs/addr_list.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/fs/afs/addr_list.c b/fs/afs/addr_list.c index 6d42f85c6be5..e941da5b6dd9 100644 --- a/fs/afs/addr_list.c +++ b/fs/afs/addr_list.c @@ -362,3 +362,53 @@ int afs_merge_fs_addr6(struct afs_net *net, struct afs_addr_list *alist, alist->nr_addrs++; return 0; } + +/* + * Set the app data on the rxrpc peers an address list points to + */ +void afs_set_peer_appdata(struct afs_server *server, + struct afs_addr_list *old_alist, + struct afs_addr_list *new_alist) +{ + unsigned long data = (unsigned long)server; + int n = 0, o = 0; + + if (!old_alist) { + /* New server. Just set all. */ + for (; n < new_alist->nr_addrs; n++) + rxrpc_kernel_set_peer_data(new_alist->addrs[n].peer, data); + return; + } + if (!new_alist) { + /* Dead server. Just remove all. */ + for (; o < old_alist->nr_addrs; o++) + rxrpc_kernel_set_peer_data(old_alist->addrs[o].peer, 0); + return; + } + + /* Walk through the two lists simultaneously, setting new peers and + * clearing old ones. The two lists are ordered by pointer to peer + * record. + */ + while (n < new_alist->nr_addrs && o < old_alist->nr_addrs) { + struct rxrpc_peer *pn = new_alist->addrs[n].peer; + struct rxrpc_peer *po = old_alist->addrs[o].peer; + + if (pn == po) + continue; + if (pn < po) { + rxrpc_kernel_set_peer_data(pn, data); + n++; + } else { + rxrpc_kernel_set_peer_data(po, 0); + o++; + } + } + + if (n < new_alist->nr_addrs) + for (; n < new_alist->nr_addrs; n++) + rxrpc_kernel_set_peer_data(new_alist->addrs[n].peer, data); + if (o < old_alist->nr_addrs) + for (; o < old_alist->nr_addrs; o++) + rxrpc_kernel_set_peer_data(old_alist->addrs[o].peer, 0); +} |