async: Handle kthread_run() return codes.

[safe/jmp/linux-2.6] / kernel / async.c

diff --git a/kernel/async.c b/kernel/async.c
index 0c90d50..078d5ed 100644 (file)
--- a/kernel/async.c
+++ b/kernel/async.c
@@ -54,6 +54,7 @@ asynchronous and synchronous parts of the kernel.
 #include <linux/sched.h>
 #include <linux/init.h>
 #include <linux/kthread.h>
+#include <linux/delay.h>
 #include <asm/atomic.h>
 
 static async_cookie_t next_cookie = 1;
@@ -319,7 +320,11 @@ static int async_manager_thread(void *unused)
                ec = atomic_read(&entry_count);
 
                while (tc < ec && tc < MAX_THREADS) {
-                       kthread_run(async_thread, NULL, "async/%i", tc);
+                       if (IS_ERR(kthread_run(async_thread, NULL, "async/%i",
+                                              tc))) {
+                               msleep(100);
+                               continue;
+                       }
                        atomic_inc(&thread_count);
                        tc++;
                }
@@ -334,7 +339,9 @@ static int async_manager_thread(void *unused)
 static int __init async_init(void)
 {
        if (async_enabled)
-               kthread_run(async_manager_thread, NULL, "async/mgr");
+               if (IS_ERR(kthread_run(async_manager_thread, NULL,
+                                      "async/mgr")))
+                       async_enabled = 0;
        return 0;
 }