* NFSv4 callback handling
*/
-#include <linux/config.h>
#include <linux/completion.h>
#include <linux/ip.h>
#include <linux/module.h>
#include <linux/sunrpc/svc.h>
#include <linux/sunrpc/svcsock.h>
#include <linux/nfs_fs.h>
+#include <linux/mutex.h>
#include <net/inet_sock.h>
};
static struct nfs_callback_data nfs_callback_info;
-static DECLARE_MUTEX(nfs_callback_sema);
+static DEFINE_MUTEX(nfs_callback_mutex);
static struct svc_program nfs4_callback_program;
unsigned int nfs_callback_set_tcpport;
complete(&nfs_callback_info.started);
- while (nfs_callback_info.users != 0 || !signalled()) {
+ for(;;) {
+ if (signalled()) {
+ if (nfs_callback_info.users == 0)
+ break;
+ flush_signals(current);
+ }
/*
* Listen for a request on the socket
*/
svc_process(serv, rqstp);
}
+ svc_exit_thread(rqstp);
nfs_callback_info.pid = 0;
complete(&nfs_callback_info.stopped);
unlock_kernel();
int ret = 0;
lock_kernel();
- down(&nfs_callback_sema);
+ mutex_lock(&nfs_callback_mutex);
if (nfs_callback_info.users++ || nfs_callback_info.pid != 0)
goto out;
init_completion(&nfs_callback_info.started);
nfs_callback_info.serv = serv;
wait_for_completion(&nfs_callback_info.started);
out:
- up(&nfs_callback_sema);
+ mutex_unlock(&nfs_callback_mutex);
unlock_kernel();
return ret;
out_destroy:
int ret = 0;
lock_kernel();
- down(&nfs_callback_sema);
- if (--nfs_callback_info.users || nfs_callback_info.pid == 0)
- goto out;
- kill_proc(nfs_callback_info.pid, SIGKILL, 1);
- wait_for_completion(&nfs_callback_info.stopped);
-out:
- up(&nfs_callback_sema);
+ mutex_lock(&nfs_callback_mutex);
+ nfs_callback_info.users--;
+ do {
+ if (nfs_callback_info.users != 0 || nfs_callback_info.pid == 0)
+ break;
+ if (kill_proc(nfs_callback_info.pid, SIGKILL, 1) < 0)
+ break;
+ } while (wait_for_completion_timeout(&nfs_callback_info.stopped, 5*HZ) == 0);
+ mutex_unlock(&nfs_callback_mutex);
unlock_kernel();
return ret;
}
/*
* Define NFS4 callback program
*/
-extern struct svc_version nfs4_callback_version1;
-
static struct svc_version *nfs4_callback_version[] = {
[1] = &nfs4_callback_version1,
};