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Red Hat Bugzilla – Attachment 198801 Details for
Bug 278961
epoll_wait(..., -100) results in printk
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[patch]
Proposed patch
278961.rhel-4 (text/plain), 852 bytes, created by
Peter Staubach
on 2007-09-18 19:47:13 UTC
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Description:
Proposed patch
Filename:
MIME Type:
Creator:
Peter Staubach
Created:
2007-09-18 19:47:13 UTC
Size:
852 bytes
patch
obsolete
>--- linux-2.6.9/fs/eventpoll.c.org >+++ linux-2.6.9/fs/eventpoll.c >@@ -101,6 +101,9 @@ > /* 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) >+ > /* Macro to allocate a "struct epitem" from the slab cache */ > #define EPI_MEM_ALLOC() (struct epitem *) kmem_cache_alloc(epi_cache, SLAB_KERNEL) > >@@ -1479,7 +1482,7 @@ static int ep_poll(struct eventpoll *ep, > * and the overflow condition. The passed timeout is in milliseconds, > * that why (t * HZ) / 1000. > */ >- jtimeout = timeout == -1 || timeout > (MAX_SCHEDULE_TIMEOUT - 1000) / HZ ? >+ jtimeout = (timeout < 0 || timeout >= EP_MAX_MSTIMEO) ? > MAX_SCHEDULE_TIMEOUT: (timeout * HZ + 999) / 1000; > > retry:
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