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DLM: Reanimate CF_WRITE_PENDING flag

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CF_WRITE_PENDING flag has been reanimated to make dlm_send stop properly
when running dlm_lowcomms_stop.

Signed-off-by: Tadashi Miyauchi <miyauchi@toshiba-tops.co.jp>
Signed-off-by: Tsutomu Owa <tsutomu.owa@toshiba.co.jp>
Signed-off-by: David Teigland <teigland@redhat.com>
This commit is contained in:
tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:16 +00:00 committed by David Teigland
parent e412f9201d
commit 8a4abb0819
1 changed files with 8 additions and 1 deletions
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9
fs/dlm/lowcomms.c
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@ -106,6 +106,7 @@ struct connection {
struct mutex sock_mutex;
unsigned long flags;
#define CF_READ_PENDING 1
#define CF_WRITE_PENDING 2
#define CF_INIT_PENDING 4
#define CF_IS_OTHERCON 5
#define CF_CLOSE 6
@ -1599,6 +1600,7 @@ static void process_send_sockets(struct work_struct *work)
{
struct connection *con = container_of(work, struct connection, swork);
clear_bit(CF_WRITE_PENDING, &con->flags);
if (con->sock == NULL) /* not mutex protected so check it inside too */
con->connect_action(con);
if (!list_empty(&con->writequeue))
@ -1642,6 +1644,7 @@ static void _stop_conn(struct connection *con, bool and_other)
{
mutex_lock(&con->sock_mutex);
set_bit(CF_READ_PENDING, &con->flags);
set_bit(CF_WRITE_PENDING, &con->flags);
if (con->sock && con->sock->sk)
con->sock->sk->sk_user_data = NULL;
if (con->othercon && and_other)
@ -1681,9 +1684,13 @@ static void work_flush(void)
hlist_for_each_entry_safe(con, n,
&connection_hash[i], list) {
ok &= test_bit(CF_READ_PENDING, &con->flags);
if (con->othercon)
ok &= test_bit(CF_WRITE_PENDING, &con->flags);
if (con->othercon) {
ok &= test_bit(CF_READ_PENDING,
&con->othercon->flags);
ok &= test_bit(CF_WRITE_PENDING,
&con->othercon->flags);
}
}
}
} while (!ok);