X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=fs%2Fselect.c;h=a201fc370223b01c918ae9767432c3060c6de95e;hb=25472b880c69c0daa485c4f80a6550437ed1149f;hp=8084834e123efed4e100fe030e2e26ced3ede1c9;hpb=3bb045f1e2e51124200ef043256df4c7ad86bebd;p=mv-sheeva.git

diff --git a/fs/select.c b/fs/select.c
index 8084834e123..a201fc37022 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -41,22 +41,28 @@
  * better solutions..
  */
 
+#define MAX_SLACK	(100 * NSEC_PER_MSEC)
+
 static long __estimate_accuracy(struct timespec *tv)
 {
 	long slack;
 	int divfactor = 1000;
 
+	if (tv->tv_sec < 0)
+		return 0;
+
 	if (task_nice(current) > 0)
 		divfactor = divfactor / 5;
 
+	if (tv->tv_sec > MAX_SLACK / (NSEC_PER_SEC/divfactor))
+		return MAX_SLACK;
+
 	slack = tv->tv_nsec / divfactor;
 	slack += tv->tv_sec * (NSEC_PER_SEC/divfactor);
 
-	if (slack > 100 * NSEC_PER_MSEC)
-		slack =  100 * NSEC_PER_MSEC;
+	if (slack > MAX_SLACK)
+		return MAX_SLACK;
 
-	if (slack < 0)
-		slack = 0;
 	return slack;
 }