Commit 0f29ce32 authored by Chuck Lever's avatar Chuck Lever
Browse files

NFSD: Skip extra computation for RC_NOCACHE case 



Force the compiler to skip unneeded initialization for cases that
don't need those values. For example, NFSv4 COMPOUND operations are
RC_NOCACHE.

Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
parent 378a6109

fs/nfsd/nfscache.c

+4 −2
Original line number Diff line number Diff line
@@ -421,10 +421,10 @@ nfsd_cache_insert(struct nfsd_drc_bucket *b, struct svc_cacherep *key, 
 */

int nfsd_cache_lookup(struct svc_rqst *rqstp)

{

	struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);

	struct nfsd_net		*nn;

	struct svc_cacherep	*rp, *found;

	__wsum			csum;

	struct nfsd_drc_bucket	*b = nfsd_cache_bucket_find(rqstp->rq_xid, nn);

	struct nfsd_drc_bucket	*b;

	int type = rqstp->rq_cachetype;

	int rtn = RC_DOIT;
@@ -440,10 +440,12 @@ int nfsd_cache_lookup(struct svc_rqst *rqstp) 
	 * Since the common case is a cache miss followed by an insert,

	 * preallocate an entry.

	 */

	nn = net_generic(SVC_NET(rqstp), nfsd_net_id);

	rp = nfsd_reply_cache_alloc(rqstp, csum, nn);

	if (!rp)

		goto out;



	b = nfsd_cache_bucket_find(rqstp->rq_xid, nn);

	spin_lock(&b->cache_lock);

	found = nfsd_cache_insert(b, rp, nn);

	if (found != rp) {