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fs: dlm: add helper for init connection

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This patch will move the connection structure initialization into an
own function. This avoids cases to update the othercon initialization.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
This commit is contained in:
Alexander Aring 2020-11-02 20:04:21 -05:00 committed by David Teigland
parent 19633c7e20
commit 6cde210a97
1 changed files with 32 additions and 35 deletions
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67
fs/dlm/lowcomms.c
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@ -170,29 +170,12 @@ static struct connection *__find_con(int nodeid)
return NULL;
}
/*
* If 'allocation' is zero then we don't attempt to create a new
* connection structure for this node.
*/
static struct connection *nodeid2con(int nodeid, gfp_t alloc)
static int dlm_con_init(struct connection *con, int nodeid)
{
struct connection *con, *tmp;
int r;
con = __find_con(nodeid);
if (con || !alloc)
return con;
con = kzalloc(sizeof(*con), alloc);
if (!con)
return NULL;
con->rx_buflen = dlm_config.ci_buffer_size;
con->rx_buf = kmalloc(con->rx_buflen, GFP_NOFS);
if (!con->rx_buf) {
kfree(con);
return NULL;
}
if (!con->rx_buf)
return -ENOMEM;
con->nodeid = nodeid;
mutex_init(&con->sock_mutex);
@ -211,6 +194,32 @@ static struct connection *nodeid2con(int nodeid, gfp_t alloc)
con->rx_action = zerocon->rx_action;
}
return 0;
}
/*
* If 'allocation' is zero then we don't attempt to create a new
* connection structure for this node.
*/
static struct connection *nodeid2con(int nodeid, gfp_t alloc)
{
struct connection *con, *tmp;
int r, ret;
con = __find_con(nodeid);
if (con || !alloc)
return con;
con = kzalloc(sizeof(*con), alloc);
if (!con)
return NULL;
ret = dlm_con_init(con, nodeid);
if (ret) {
kfree(con);
return NULL;
}
r = nodeid_hash(nodeid);
spin_lock(&connections_lock);
@ -849,32 +858,20 @@ static int accept_from_sock(struct connection *con)
goto accept_err;
}
othercon->rx_buflen = dlm_config.ci_buffer_size;
othercon->rx_buf = kmalloc(othercon->rx_buflen, GFP_NOFS);
if (!othercon->rx_buf) {
mutex_unlock(&newcon->sock_mutex);
result = dlm_con_init(othercon, nodeid);
if (result < 0) {
kfree(othercon);
log_print("failed to allocate incoming socket receive buffer");
result = -ENOMEM;
goto accept_err;
}
othercon->nodeid = nodeid;
othercon->rx_action = receive_from_sock;
mutex_init(&othercon->sock_mutex);
INIT_LIST_HEAD(&othercon->writequeue);
spin_lock_init(&othercon->writequeue_lock);
INIT_WORK(&othercon->swork, process_send_sockets);
INIT_WORK(&othercon->rwork, process_recv_sockets);
init_waitqueue_head(&othercon->shutdown_wait);
set_bit(CF_IS_OTHERCON, &othercon->flags);
newcon->othercon = othercon;
} else {
/* close other sock con if we have something new */
close_connection(othercon, false, true, false);
}
mutex_lock_nested(&othercon->sock_mutex, 2);
newcon->othercon = othercon;
add_sock(newsock, othercon);
addcon = othercon;
mutex_unlock(&othercon->sock_mutex);