/*
* We received a GRANT_RES callback. Try to find the corresponding
* block.
*/
void
nlmsvc_grant_reply(u32 cookie, u32 status)
{
struct nlm_block *block;
struct nlm_file *file;
if (!(block = nlmsvc_find_block(cookie)))
return;
file = block->b_file;
file->f_count++;
down(&file->f_sema);
if ((block = nlmsvc_find_block(cookie)) != NULL) {
if (status == NLM_LCK_DENIED_GRACE_PERIOD) {
/* Try again in a couple of seconds */
nlmsvc_insert_block(block, jiffies + 10 * HZ);
block = NULL;
} else {
/* Lock is now held by client, or has been rejected.
* In both cases, the block should be removed. */
file->f_count++;
up(&file->f_sema);
if (status == NLM_LCK_GRANTED)
nlmsvc_delete_block(block, 0);
else
nlmsvc_delete_block(block, 1);
}
}
if (!block)
up(&file->f_sema);
nlm_release_file(file);
}
/*
* We received a GRANT_RES callback. Try to find the corresponding
* block.
*/
void
nlmsvc_grant_reply(struct svc_rqst *rqstp, struct nlm_cookie *cookie, u32 status)
{
struct nlm_block *block;
struct nlm_file *file;
dprintk("grant_reply: looking for cookie %x, host (%08x), s=%d \n",
*(unsigned int *)(cookie->data),
ntohl(rqstp->rq_addr.sin_addr.s_addr), status);
if (!(block = nlmsvc_find_block(cookie, &rqstp->rq_addr)))
return;
file = block->b_file;
file->f_count++;
down(&file->f_sema);
if ((block = nlmsvc_find_block(cookie,&rqstp->rq_addr)) != NULL) {
if (status == NLM_LCK_DENIED_GRACE_PERIOD) {
/* Try again in a couple of seconds */
nlmsvc_insert_block(block, 10 * HZ);
block = NULL;
} else {
/* Lock is now held by client, or has been rejected.
* In both cases, the block should be removed. */
file->f_count++;
up(&file->f_sema);
if (status == NLM_LCK_GRANTED)
nlmsvc_delete_block(block, 0);
else
nlmsvc_delete_block(block, 1);
}
}
if (!block)
up(&file->f_sema);
nlm_release_file(file);
}
/*
* This is the callback from the RPC layer when the NLM_GRANTED_MSG
* RPC call has succeeded or timed out.
* Like all RPC callbacks, it is invoked by the rpciod process, so it
* better not sleep. Therefore, we put the blocked lock on the nlm_blocked
* chain once more in order to have it removed by lockd itself (which can
* then sleep on the file semaphore without disrupting e.g. the nfs client).
*/
static void
nlmsvc_grant_callback(struct rpc_task *task)
{
struct nlm_rqst *call = (struct nlm_rqst *) task->tk_calldata;
struct nlm_block *block;
unsigned long timeout;
dprintk("lockd: GRANT_MSG RPC callback\n");
if (!(block = nlmsvc_find_block(call->a_args.cookie))) {
dprintk("lockd: no block for cookie %x\n", call->a_args.cookie);
return;
}
/* Technically, we should down the file semaphore here. Since we
* move the block towards the head of the queue only, no harm
* can be done, though. */
if (task->tk_status < 0) {
/* RPC error: Re-insert for retransmission */
timeout = jiffies + 10 * HZ;
} else if (block->b_done) {
/* Block already removed, kill it for real */
timeout = 0;
} else {
/* Call was successful, now wait for client callback */
timeout = jiffies + 60 * HZ;
}
nlmsvc_insert_block(block, timeout);
svc_wake_up(block->b_daemon);
block->b_incall = 0;
nlm_release_host(call->a_host);
rpc_release_task(task);
}
/*
* This is the callback from the RPC layer when the NLM_GRANTED_MSG
* RPC call has succeeded or timed out.
* Like all RPC callbacks, it is invoked by the rpciod process, so it
* better not sleep. Therefore, we put the blocked lock on the nlm_blocked
* chain once more in order to have it removed by lockd itself (which can
* then sleep on the file semaphore without disrupting e.g. the nfs client).
*/
static void
nlmsvc_grant_callback(struct rpc_task *task)
{
struct nlm_rqst *call = (struct nlm_rqst *) task->tk_calldata;
struct nlm_block *block;
unsigned long timeout;
struct sockaddr_in *peer_addr = RPC_PEERADDR(task->tk_client);
dprintk("lockd: GRANT_MSG RPC callback\n");
dprintk("callback: looking for cookie %x, host (%08x)\n",
*(unsigned int *)(call->a_args.cookie.data),
ntohl(peer_addr->sin_addr.s_addr));
if (!(block = nlmsvc_find_block(&call->a_args.cookie, peer_addr))) {
dprintk("lockd: no block for cookie %x, host (%08x)\n",
*(u32 *)(call->a_args.cookie.data),
ntohl(peer_addr->sin_addr.s_addr));
return;
}
/* Technically, we should down the file semaphore here. Since we
* move the block towards the head of the queue only, no harm
* can be done, though. */
if (task->tk_status < 0) {
/* RPC error: Re-insert for retransmission */
timeout = 10 * HZ;
} else if (block->b_done) {
/* Block already removed, kill it for real */
timeout = 0;
} else {
/* Call was successful, now wait for client callback */
timeout = 60 * HZ;
}
nlmsvc_insert_block(block, timeout);
svc_wake_up(block->b_daemon);
block->b_incall = 0;
nlm_release_host(call->a_host);
}
