Every caller of svc_take_page ignores its return value and assumes it
succeeded. So just WARN() instead of returning an ignored error. This
would have saved some time debugging a recent nfsd4 problem.
If there are still failure cases here, then the result is probably that we
overwrite an earlier part of the reply while xdr-encoding.
While the corrupted reply is a nasty bug, it would be worse to panic here
and create the possibility of a remote DOS; hence WARN() instead of BUG().
Signed-off-by: J. Bruce Fields <[email protected]>
Signed-off-by: Neil Brown <[email protected]>
### Diffstat output
./include/linux/sunrpc/svc.h | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff ./include/linux/sunrpc/svc.h~current~ ./include/linux/sunrpc/svc.h
--- ./include/linux/sunrpc/svc.h~current~ 2006-04-03 15:12:15.000000000 +1000
+++ ./include/linux/sunrpc/svc.h 2006-04-03 15:12:15.000000000 +1000
@@ -197,15 +197,13 @@ svc_take_res_page(struct svc_rqst *rqstp
return rqstp->rq_respages[rqstp->rq_resused++];
}
-static inline int svc_take_page(struct svc_rqst *rqstp)
+static inline void svc_take_page(struct svc_rqst *rqstp)
{
- if (rqstp->rq_arghi <= rqstp->rq_argused)
- return -ENOMEM;
+ WARN_ON(rqstp->rq_arghi <= rqstp->rq_argused);
rqstp->rq_arghi--;
rqstp->rq_respages[rqstp->rq_resused] =
rqstp->rq_argpages[rqstp->rq_arghi];
rqstp->rq_resused++;
- return 0;
}
static inline void svc_pushback_allpages(struct svc_rqst *rqstp)
-
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