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authorLinus Torvalds <torvalds@linux-foundation.org>2009-10-15 15:21:20 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-10-15 15:21:20 -0700
commit8e7768d3f40d4ab79e6af58462e173cdbfad9cc6 (patch)
tree5f47b220e4232d6483fff490290f6491d34a2a74
parent36d6f3ecbd0bedfbda8b9f7c5fc36edb62a417ad (diff)
parent6861f350785bf476c2d4e3b9cb69ee36b78df2fc (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm: dlm: fix socket fd translation dlm: fix lowcomms_connect_node for sctp
-rw-r--r--fs/dlm/lowcomms.c36
1 files changed, 22 insertions, 14 deletions
diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index 240cef14fe58..70736eb4b516 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -316,6 +316,10 @@ int dlm_lowcomms_connect_node(int nodeid)
{
struct connection *con;
+ /* with sctp there's no connecting without sending */
+ if (dlm_config.ci_protocol != 0)
+ return 0;
+
if (nodeid == dlm_our_nodeid())
return 0;
@@ -455,9 +459,9 @@ static void process_sctp_notification(struct connection *con,
int prim_len, ret;
int addr_len;
struct connection *new_con;
- struct file *file;
sctp_peeloff_arg_t parg;
int parglen = sizeof(parg);
+ int err;
/*
* We get this before any data for an association.
@@ -512,19 +516,22 @@ static void process_sctp_notification(struct connection *con,
ret = kernel_getsockopt(con->sock, IPPROTO_SCTP,
SCTP_SOCKOPT_PEELOFF,
(void *)&parg, &parglen);
- if (ret) {
+ if (ret < 0) {
log_print("Can't peel off a socket for "
- "connection %d to node %d: err=%d\n",
+ "connection %d to node %d: err=%d",
parg.associd, nodeid, ret);
+ return;
+ }
+ new_con->sock = sockfd_lookup(parg.sd, &err);
+ if (!new_con->sock) {
+ log_print("sockfd_lookup error %d", err);
+ return;
}
- file = fget(parg.sd);
- new_con->sock = SOCKET_I(file->f_dentry->d_inode);
add_sock(new_con->sock, new_con);
- fput(file);
- put_unused_fd(parg.sd);
+ sockfd_put(new_con->sock);
- log_print("got new/restarted association %d nodeid %d",
- (int)sn->sn_assoc_change.sac_assoc_id, nodeid);
+ log_print("connecting to %d sctp association %d",
+ nodeid, (int)sn->sn_assoc_change.sac_assoc_id);
/* Send any pending writes */
clear_bit(CF_CONNECT_PENDING, &new_con->flags);
@@ -837,8 +844,6 @@ static void sctp_init_assoc(struct connection *con)
if (con->retries++ > MAX_CONNECT_RETRIES)
return;
- log_print("Initiating association with node %d", con->nodeid);
-
if (nodeid_to_addr(con->nodeid, (struct sockaddr *)&rem_addr)) {
log_print("no address for nodeid %d", con->nodeid);
return;
@@ -855,11 +860,14 @@ static void sctp_init_assoc(struct connection *con)
outmessage.msg_flags = MSG_EOR;
spin_lock(&con->writequeue_lock);
- e = list_entry(con->writequeue.next, struct writequeue_entry,
- list);
- BUG_ON((struct list_head *) e == &con->writequeue);
+ if (list_empty(&con->writequeue)) {
+ spin_unlock(&con->writequeue_lock);
+ log_print("writequeue empty for nodeid %d", con->nodeid);
+ return;
+ }
+ e = list_first_entry(&con->writequeue, struct writequeue_entry, list);
len = e->len;
offset = e->offset;
spin_unlock(&con->writequeue_lock);