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-rw-r--r--fs/nfsd/nfs4state.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index d5caf2a709d..99570c49add 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -425,6 +425,11 @@ static int set_forechannel_maxreqs(struct nfsd4_channel_attrs *fchan)
{
int status = 0, np = fchan->maxreqs * NFSD_PAGES_PER_SLOT;
+ if (fchan->maxreqs < 1)
+ return nfserr_inval;
+ else if (fchan->maxreqs > NFSD_MAX_SLOTS_PER_SESSION)
+ fchan->maxreqs = NFSD_MAX_SLOTS_PER_SESSION;
+
spin_lock(&nfsd_serv->sv_lock);
if (np + nfsd_serv->sv_drc_pages_used > nfsd_serv->sv_drc_max_pages)
np = nfsd_serv->sv_drc_max_pages - nfsd_serv->sv_drc_pages_used;