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Flushing pages to vfs will work, but the issue is that while vfs is

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serving mm0, if it page faults, system deadlocks because mm0 is waiting to be served by vfs.

FIX: To fix this, mm0 will need to fork itself and keep a separate thread solely for
page fault handling.
This commit is contained in:
Bahadir Balban
2008-05-28 23:37:41 +03:00
parent 98888a94b5
commit f561d885d5
6 changed files with 39 additions and 9 deletions
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12
src/api/ipc.c
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@@ -85,8 +85,8 @@ int ipc_send(l4id_t recv_tid)
/* Do the work */
ipc_msg_copy(sleeper, current);
//printk("(%d) Waking up (%d)\n", current->tid,
// sleeper->tid);
printk("%s: (%d) Waking up (%d)\n", __FUNCTION__,
current->tid, sleeper->tid);
/* Wake it up, we can yield here. */
sched_resume_task(sleeper);
@@ -100,7 +100,7 @@ int ipc_send(l4id_t recv_tid)
list_add_tail(&wq.task_list, &wqhs->task_list);
sched_notify_sleep(current);
need_resched = 1;
//printk("(%d) waiting for (%d)\n", current->tid, recv_tid);
printk("%s: (%d) waiting for (%d)\n", __FUNCTION__, current->tid, recv_tid);
spin_unlock(&wqhr->slock);
spin_unlock(&wqhs->slock);
return 0;
@@ -133,8 +133,8 @@ int ipc_recv(l4id_t senderid)
/* Do the work */
ipc_msg_copy(current, sleeper);
//printk("(%d) Waking up (%d)\n", current->tid,
// sleeper->tid);
printk("%s: (%d) Waking up (%d)\n", __FUNCTION__,
current->tid, sleeper->tid);
/* Wake it up */
sched_resume_task(sleeper);
@@ -149,7 +149,7 @@ int ipc_recv(l4id_t senderid)
list_add_tail(&wq.task_list, &wqhr->task_list);
sched_notify_sleep(current);
need_resched = 1;
// printk("(%d) waiting for (%d) \n", current->tid, current->senderid);
printk("%s: (%d) waiting for (%d) \n", __FUNCTION__, current->tid, current->senderid);
spin_unlock(&wqhr->slock);
spin_unlock(&wqhs->slock);
return 0;