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Red Hat Bugzilla – Attachment 305739 Details for
Bug 446409
RHEL4 U6 hang in epoll_wait
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[patch]
proposed fix.
eventpoll-lockup-fix.patch (text/plain), 637 bytes, created by
Josef Bacik
on 2008-05-16 20:02:12 UTC
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Description:
proposed fix.
Filename:
MIME Type:
Creator:
Josef Bacik
Created:
2008-05-16 20:02:12 UTC
Size:
637 bytes
patch
obsolete
>diff --git a/fs/eventpoll.c b/fs/eventpoll.c >index 06e1cee..04328da 100644 >--- a/fs/eventpoll.c >+++ b/fs/eventpoll.c >@@ -1452,7 +1452,7 @@ static int ep_events_transfer(struct eventpoll *ep, > * We need to lock this because we could be hit by > * eventpoll_release_file() and epoll_ctl(EPOLL_CTL_DEL). > */ >- down_read(&ep->sem); >+ down_write(&ep->sem); > > /* Collect/extract ready items */ > if (ep_collect_ready_items(ep, &txlist, maxevents) > 0) { >@@ -1463,7 +1463,7 @@ static int ep_events_transfer(struct eventpoll *ep, > ep_reinject_items(ep, &txlist); > } > >- up_read(&ep->sem); >+ up_write(&ep->sem); > > return eventcnt; > }
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