From: Trond Myklebust <trond.myklebust@hammerspace.com>
Date: Fri, 13 Nov 2020 21:42:16 -0500
Subject: [PATCH] NFSv4: Fix the alignment of page data in the getdeviceinfo
reply
Git-commit: 046e5ccb4198b990190e11fb52fd9cfd264402eb
Patch-mainline: v5.11-rc1
References: for-next
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@hammerspace.com>
Acked-by: NeilBrown <neilb@suse.com>
---
fs/nfs/nfs4xdr.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -3012,15 +3012,19 @@ static void nfs4_xdr_enc_getdeviceinfo(s
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 + 1);
encode_nops(&hdr);
}