diff options
Diffstat (limited to 'fs/nfsd/nfs4proc.c')
| -rw-r--r-- | fs/nfsd/nfs4proc.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index bd67f4d6dfc6..2a2d9b06a413 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -692,6 +692,17 @@ nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, if (read->rd_offset >= OFFSET_MAX) return nfserr_inval; + /* + * If we do a zero copy read, then a client will see read data + * that reflects the state of the file *after* performing the + * following compound. + * + * To ensure proper ordering, we therefore turn off zero copy if + * the client wants us to do more in this compound: + */ + if (!nfsd4_last_compound_op(rqstp)) + rqstp->rq_splice_ok = false; + nfs4_lock_state(); /* check stateid */ if ((status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), |