NFS4.1: server gets drc mem fail should reply error at create_session

When server gets drc mem fail, it should reply error to client.

Signed-off-by: Mi Jinlong <mijinlong@cn.fujitsu.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 9e7f8af12f8f..5d0ee0f0cb0e 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -749,6 +749,8 @@ static struct nfsd4_session *alloc_init_session(struct svc_rqst *rqstp, struct n
          */
         slotsize = nfsd4_sanitize_slot_size(fchan->maxresp_cached);
         numslots = nfsd4_get_drc_mem(slotsize, fchan->maxreqs);
+        if (numslots < 1)
+                return NULL;
 
         new = alloc_session(slotsize, numslots);
         if (!new) {