X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Ftimerfd.c;h=61983f3b107c5ee5d12521d3f38255a77bc6f781;hb=f3f94ce5dba6e134cf0958dd3a42ab28a028fc83;hp=e329e37f15a846b4898132a2b7b91b408ee2c03c;hpb=cabca0cb0d0e8579428d8f8c3f606e2f01d26d14;p=pandora-kernel.git

diff --git a/fs/timerfd.c b/fs/timerfd.c
index e329e37f15a8..61983f3b107c 100644
--- a/fs/timerfd.c
+++ b/fs/timerfd.c
@@ -24,7 +24,6 @@
 struct timerfd_ctx {
 	struct hrtimer tmr;
 	ktime_t tintv;
-	spinlock_t lock;
 	wait_queue_head_t wqh;
 	int expired;
 };
@@ -39,10 +38,10 @@ static enum hrtimer_restart timerfd_tmrproc(struct hrtimer *htmr)
 	struct timerfd_ctx *ctx = container_of(htmr, struct timerfd_ctx, tmr);
 	unsigned long flags;
 
-	spin_lock_irqsave(&ctx->lock, flags);
+	spin_lock_irqsave(&ctx->wqh.lock, flags);
 	ctx->expired = 1;
 	wake_up_locked(&ctx->wqh);
-	spin_unlock_irqrestore(&ctx->lock, flags);
+	spin_unlock_irqrestore(&ctx->wqh.lock, flags);
 
 	return HRTIMER_NORESTART;
 }
@@ -83,10 +82,10 @@ static unsigned int timerfd_poll(struct file *file, poll_table *wait)
 
 	poll_wait(file, &ctx->wqh, wait);
 
-	spin_lock_irqsave(&ctx->lock, flags);
+	spin_lock_irqsave(&ctx->wqh.lock, flags);
 	if (ctx->expired)
 		events |= POLLIN;
-	spin_unlock_irqrestore(&ctx->lock, flags);
+	spin_unlock_irqrestore(&ctx->wqh.lock, flags);
 
 	return events;
 }
@@ -96,12 +95,12 @@ static ssize_t timerfd_read(struct file *file, char __user *buf, size_t count,
 {
 	struct timerfd_ctx *ctx = file->private_data;
 	ssize_t res;
-	u32 ticks = 0;
+	u64 ticks = 0;
 	DECLARE_WAITQUEUE(wait, current);
 
 	if (count < sizeof(ticks))
 		return -EINVAL;
-	spin_lock_irq(&ctx->lock);
+	spin_lock_irq(&ctx->wqh.lock);
 	res = -EAGAIN;
 	if (!ctx->expired && !(file->f_flags & O_NONBLOCK)) {
 		__add_wait_queue(&ctx->wqh, &wait);
@@ -115,9 +114,9 @@ static ssize_t timerfd_read(struct file *file, char __user *buf, size_t count,
 				res = -ERESTARTSYS;
 				break;
 			}
-			spin_unlock_irq(&ctx->lock);
+			spin_unlock_irq(&ctx->wqh.lock);
 			schedule();
-			spin_lock_irq(&ctx->lock);
+			spin_lock_irq(&ctx->wqh.lock);
 		}
 		__remove_wait_queue(&ctx->wqh, &wait);
 		__set_current_state(TASK_RUNNING);
@@ -131,7 +130,7 @@ static ssize_t timerfd_read(struct file *file, char __user *buf, size_t count,
 			 * callback to avoid DoS attacks specifying a very
 			 * short timer period.
 			 */
-			ticks = (u32)
+			ticks = (u64)
 				hrtimer_forward(&ctx->tmr,
 						hrtimer_cb_get_time(&ctx->tmr),
 						ctx->tintv);
@@ -139,9 +138,9 @@ static ssize_t timerfd_read(struct file *file, char __user *buf, size_t count,
 		} else
 			ticks = 1;
 	}
-	spin_unlock_irq(&ctx->lock);
+	spin_unlock_irq(&ctx->wqh.lock);
 	if (ticks)
-		res = put_user(ticks, buf) ? -EFAULT: sizeof(ticks);
+		res = put_user(ticks, (u64 __user *) buf) ? -EFAULT: sizeof(ticks);
 	return res;
 }
 
@@ -176,7 +175,6 @@ asmlinkage long sys_timerfd(int ufd, int clockid, int flags,
 			return -ENOMEM;
 
 		init_waitqueue_head(&ctx->wqh);
-		spin_lock_init(&ctx->lock);
 
 		timerfd_setup(ctx, clockid, flags, &ktmr);
 
@@ -202,10 +200,10 @@ asmlinkage long sys_timerfd(int ufd, int clockid, int flags,
 		 * it to the new values.
 		 */
 		for (;;) {
-			spin_lock_irq(&ctx->lock);
+			spin_lock_irq(&ctx->wqh.lock);
 			if (hrtimer_try_to_cancel(&ctx->tmr) >= 0)
 				break;
-			spin_unlock_irq(&ctx->lock);
+			spin_unlock_irq(&ctx->wqh.lock);
 			cpu_relax();
 		}
 		/*
@@ -213,7 +211,7 @@ asmlinkage long sys_timerfd(int ufd, int clockid, int flags,
 		 */
 		timerfd_setup(ctx, clockid, flags, &ktmr);
 
-		spin_unlock_irq(&ctx->lock);
+		spin_unlock_irq(&ctx->wqh.lock);
 		fput(file);
 	}