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dlm: connect to nodes earlier

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Make network connections to other nodes earlier, in the context of
dlm_recoverd.  This avoids connecting to nodes from dlm_send where we
try to avoid allocations which could possibly deadlock if memory reclaim
goes into the cluster fs which may try to do a dlm operation.

Signed-off-by: Christine Caulfield <ccaulfie@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
This commit is contained in:
Christine Caulfield
2009-05-07 10:54:16 -05:00
committed by David Teigland
parent 8511a2728a
commit 391fbdc5d5
3 changed files with 26 additions and 4 deletions
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16
fs/dlm/lowcomms.c
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@ -309,6 +309,20 @@ static void lowcomms_state_change(struct sock *sk)
lowcomms_write_space(sk);
}
int dlm_lowcomms_connect_node(int nodeid)
{
struct connection *con;
if (nodeid == dlm_our_nodeid())
return 0;
con = nodeid2con(nodeid, GFP_NOFS);
if (!con)
return -ENOMEM;
lowcomms_connect_sock(con);
return 0;
}
/* Make a socket active */
static int add_sock(struct socket *sock, struct connection *con)
{
@ -1421,7 +1435,7 @@ static int work_start(void)
static void stop_conn(struct connection *con)
{
con->flags |= 0x0F;
if (con->sock)
if (con->sock && con->sock->sk)
con->sock->sk->sk_user_data = NULL;
}