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NFSv4: Fix the alignment of page data in the getdeviceinfo reply 

We can fit the device_addr4 opaque data padding in the pages.

Fixes: cf500bac8f ("SUNRPC: Introduce rpc_prepare_reply_pages()")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust 2020-11-13 21:42:16 -05:00
parent 9889981349
commit 046e5ccb41
1 changed files with 7 additions and 3 deletions
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10
fs/nfs/nfs4xdr.c
View File

@ -3009,15 +3009,19 @@ static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
struct compound_hdr hdr = { struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args), .minorversion = nfs4_xdr_minorversion(&args->seq_args),
}; };
uint32_t replen;
encode_compound_hdr(xdr, req, &hdr); encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr); encode_sequence(xdr, &args->seq_args, &hdr);
replen = hdr.replen + op_decode_hdr_maxsz;
encode_getdeviceinfo(xdr, args, &hdr); encode_getdeviceinfo(xdr, args, &hdr);
/* set up reply kvec. Subtract notification bitmap max size (2) /* set up reply kvec. device_addr4 opaque data is read into the
* so that notification bitmap is put in xdr_buf tail */ * pages */
rpc_prepare_reply_pages(req, args->pdev->pages, args->pdev->pgbase, 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); encode_nops(&hdr);
} }