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-rw-r--r--fs/select.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/fs/select.c b/fs/select.c
index fdd8584e536d..448e44001286 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -41,9 +41,9 @@
* better solutions..
*/
-static unsigned long __estimate_accuracy(struct timespec *tv)
+static long __estimate_accuracy(struct timespec *tv)
{
- unsigned long slack;
+ long slack;
int divfactor = 1000;
if (task_nice(current) > 0)
@@ -54,10 +54,13 @@ static unsigned long __estimate_accuracy(struct timespec *tv)
if (slack > 100 * NSEC_PER_MSEC)
slack = 100 * NSEC_PER_MSEC;
+
+ if (slack < 0)
+ slack = 0;
return slack;
}
-static unsigned long estimate_accuracy(struct timespec *tv)
+static long estimate_accuracy(struct timespec *tv)
{
unsigned long ret;
struct timespec now;
@@ -330,7 +333,7 @@ int do_select(int n, fd_set_bits *fds, struct timespec *end_time)
timed_out = 1;
}
- if (end_time)
+ if (end_time && !timed_out)
slack = estimate_accuracy(end_time);
retval = 0;
@@ -656,7 +659,7 @@ static int do_poll(unsigned int nfds, struct poll_list *list,
timed_out = 1;
}
- if (end_time)
+ if (end_time && !timed_out)
slack = estimate_accuracy(end_time);
for (;;) {