From: J. Bruce Fields <bfields@redhat.com>
Date: Fri, 21 Mar 2014 00:47:41 +0000 (-0400)
Subject: nfsd4: use session limits to release send buffer reservation
X-Git-Tag: firefly_0821_release~176^2~3796^2~45
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=32aaa62ede574ff99b020b4ee3ff6f9cfc9f0099;p=firefly-linux-kernel-4.4.55.git

nfsd4: use session limits to release send buffer reservation

Once we know the limits the session places on the size of the rpc, we
can also use that information to release any unnecessary reserved reply
buffer space.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 612b85ac414b..62b882dc48ec 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2290,6 +2290,7 @@ nfsd4_sequence(struct svc_rqst *rqstp,
 				    nfserr_rep_too_big;
 	if (xdr_restrict_buflen(xdr, buflen - 2 * RPC_MAX_AUTH_SIZE))
 		goto out_put_session;
+	svc_reserve(rqstp, buflen);
 
 	status = nfs_ok;
 	/* Success! bump slot seqid */