From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
We can fit the device_addr4 opaque data padding in the pages.
Fixes: cf500bac8fd4 ("SUNRPC: Introduce rpc_prepare_reply_pages()")
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
fs/nfs/nfs4xdr.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index c6dbfcae7517..c8714381d511 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -3009,15 +3009,19 @@ static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
+ uint32_t replen;
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
+
+ replen = hdr.replen + op_decode_hdr_maxsz;
+
encode_getdeviceinfo(xdr, args, &hdr);
- /* set up reply kvec. Subtract notification bitmap max size (2)
- * so that notification bitmap is put in xdr_buf tail */
+ /* set up reply kvec. device_addr4 opaque data is read into the
+ * pages */
rpc_prepare_reply_pages(req, args->pdev->pages, args->pdev->pgbase,
- args->pdev->pglen, hdr.replen - 2);
+ args->pdev->pglen, replen + 2);
encode_nops(&hdr);
}
@@ -5848,7 +5852,9 @@ static int decode_getdeviceinfo(struct xdr_stream *xdr,
* and places the remaining xdr data in xdr_buf->tail
*/
pdev->mincount = be32_to_cpup(p);
- if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
+ /* Calculate padding */
+ len = xdr_align_size(pdev->mincount);
+ if (xdr_read_pages(xdr, len) != len)
return -EIO;
/* Parse notification bitmap, verifying that it is zero. */
--
2.28.0
