minixfs: fix block limit check

[karo-tx-linux.git] / fs / eventfd.c

diff --git a/fs/eventfd.c b/fs/eventfd.c
index dba15fecf23e376f12ad2cb367424cf202d3a819..d81b9f654086d1cdb3899767cf6e1e5bf05e9f6e 100644 (file)
--- a/fs/eventfd.c
+++ b/fs/eventfd.c
@@ -46,20 +46,16 @@ struct eventfd_ctx {
  * value, and we signal this as overflow condition by returining a POLLERR
  * to poll(2).
  *
- * Returns @n in case of success, a non-negative number lower than @n in case
- * of overflow, or the following error codes:
- *
- * -EINVAL    : The value of @n is negative.
+ * Returns the amount by which the counter was incrememnted.  This will be less
+ * than @n if the counter has overflowed.
  */
-int eventfd_signal(struct eventfd_ctx *ctx, int n)
+__u64 eventfd_signal(struct eventfd_ctx *ctx, __u64 n)
 {
        unsigned long flags;
 
-       if (n < 0)
-               return -EINVAL;
        spin_lock_irqsave(&ctx->wqh.lock, flags);
        if (ULLONG_MAX - ctx->count < n)
-               n = (int) (ULLONG_MAX - ctx->count);
+               n = ULLONG_MAX - ctx->count;
        ctx->count += n;
        if (waitqueue_active(&ctx->wqh))
                wake_up_locked_poll(&ctx->wqh, POLLIN);