Commit fdec6114 authored by J. Bruce Fields's avatar J. Bruce Fields

nfsd4: zero-length WRITE should succeed

Zero-length writes are legal; from 5661 section 18.32.3: "If the count
is zero, the WRITE will succeed and return a count of zero subject to
permissions checking".

This check is unnecessary and is causing zero-length reads to return

Fixes: 3fd9557a "NFSD: Refactor the generic write vector fill helper"
Cc: Chuck Lever <>
Signed-off-by: default avatarJ. Bruce Fields <>
parent 2e6e902d
......@@ -1016,8 +1016,6 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
nvecs = svc_fill_write_vector(rqstp, write->wr_pagelist,
&write->wr_head, write->wr_buflen);
if (!nvecs)
return nfserr_io;
WARN_ON_ONCE(nvecs > ARRAY_SIZE(rqstp->rq_vec));
status = nfsd_vfs_write(rqstp, &cstate->current_fh, filp,
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment