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ocfs2/cluster: Add new function o2net_fill_node_map()

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Patch adds function o2net_fill_node_map() to return the bitmap of nodes that
it is connected to. This bitmap is also accessible by the user via the debugfs
file, /sys/kernel/debug/o2net/connected_nodes.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
This commit is contained in:
Sunil Mushran
2011-07-24 10:32:54 -07:00
parent bb570a5d9e
commit 3ba169ccec
3 changed files with 90 additions and 33 deletions
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19
fs/ocfs2/cluster/tcp.c
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@@ -1034,6 +1034,25 @@ static int o2net_tx_can_proceed(struct o2net_node *nn,
return ret;
}
/* Get a map of all nodes to which this node is currently connected to */
void o2net_fill_node_map(unsigned long *map, unsigned bytes)
{
struct o2net_sock_container *sc;
int node, ret;
BUG_ON(bytes < (BITS_TO_LONGS(O2NM_MAX_NODES) * sizeof(unsigned long)));
memset(map, 0, bytes);
for (node = 0; node < O2NM_MAX_NODES; ++node) {
o2net_tx_can_proceed(o2net_nn_from_num(node), &sc, &ret);
if (!ret) {
set_bit(node, map);
sc_put(sc);
}
}
}
EXPORT_SYMBOL_GPL(o2net_fill_node_map);
int o2net_send_message_vec(u32 msg_type, u32 key, struct kvec *caller_vec,
size_t caller_veclen, u8 target_node, int *status)
{