diff options
| author | Jeff Garzik <jgarzik@pobox.com> | 2005-10-04 10:16:31 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-10-04 10:16:31 -0400 |
| commit | 2ee73cc2d507df7b28050fba5d08bd33dd34848c (patch) | |
| tree | af5f33b265318e0f4b61f788691fe4f780ec402c /fs/eventpoll.c | |
| parent | c1d9728ecc5b560465df3c0c0d3b3825c2710b40 (diff) | |
| parent | ed39f731ab2e77e58122232f6e27333331d7793d (diff) | |
Merge /spare/repo/linux-2.6/
Diffstat (limited to 'fs/eventpoll.c')
| -rw-r--r-- | fs/eventpoll.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/eventpoll.c b/fs/eventpoll.c index 403b90a1213d..4284cd31eba6 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -101,6 +101,10 @@ /* Maximum number of poll wake up nests we are allowing */ #define EP_MAX_POLLWAKE_NESTS 4 +/* Maximum msec timeout value storeable in a long int */ +#define EP_MAX_MSTIMEO min(1000ULL * MAX_SCHEDULE_TIMEOUT / HZ, (LONG_MAX - 999ULL) / HZ) + + struct epoll_filefd { struct file *file; int fd; @@ -1506,8 +1510,8 @@ static int ep_poll(struct eventpoll *ep, struct epoll_event __user *events, * and the overflow condition. The passed timeout is in milliseconds, * that why (t * HZ) / 1000. */ - jtimeout = timeout == -1 || timeout > (MAX_SCHEDULE_TIMEOUT - 1000) / HZ ? - MAX_SCHEDULE_TIMEOUT: (timeout * HZ + 999) / 1000; + jtimeout = (timeout < 0 || timeout >= EP_MAX_MSTIMEO) ? + MAX_SCHEDULE_TIMEOUT : (timeout * HZ + 999) / 1000; retry: write_lock_irqsave(&ep->lock, flags); |