Commit 1887b935 authored Nov 15, 2005 by NeilBrown Committed by Linus Torvalds Nov 15, 2005

[PATCH] knfsd: make sure nfsd doesn't hog a cpu forever



Being kernel-threads, nfsd servers don't get pre-empted (depending on
CONFIG).  If there is a steady stream of NFS requests that can be served
from cache, an nfsd thread may hold on to a cpu indefinitely, which isn't
very friendly.

So it is good to have a cond_resched in there (just before looking for a
new request to serve), to make sure we play nice.

Signed-off-by: Neil Brown <neilb@suse.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent fa63b229

net/sunrpc/svcsock.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1178,6 +1178,7 @@ svc_recv(struct svc_serv serv, struct svc_rqst rqstp, long timeout)
		arg->tail[0].iov_len = 0;

		try_to_freeze();
		cond_resched();
		if (signalled())
		return -EINTR;

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