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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2005-10-18 13:50:52 -0700 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2005-10-18 13:50:52 -0700 |
| commit | cff6bf970965c98c62007fc8a36527fd147fe233 (patch) | |
| tree | 2791f2208b54ade86625af416ff5342f11282f0c /fs/eventpoll.c | |
| parent | 6cd7525a00f3b926e8bd2e402954ed3e09a8e924 (diff) | |
| parent | 39ca371c45b04cd50d0974030ae051906fc516b6 (diff) | |
Merge /home/trondmy/scm/kernel/git/torvalds/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 403b90a1213..4284cd31eba 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); |