5.15-stable review patch. If anyone has any objections, please let me know.
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From: Chuck Lever chuck.lever@oracle.com
[ Upstream commit 99b002a1fa00d90e66357315757e7277447ce973 ]
Similar changes to nfsd4_encode_readv(), all bundled into a single patch.
Reviewed-by: Jeff Layton jlayton@kernel.org Signed-off-by: Chuck Lever chuck.lever@oracle.com --- fs/nfsd/nfs4xdr.c | 24 +++++++++--------------- 1 file changed, 9 insertions(+), 15 deletions(-)
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 88e8192f9a75d..a5ab6ea475423 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -4016,16 +4016,13 @@ nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, static __be32 nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) { - int maxcount; - __be32 wire_count; - int zero = 0; + __be32 *p, *maxcount_p, zero = xdr_zero; struct xdr_stream *xdr = resp->xdr; int length_offset = xdr->buf->len; - int status; - __be32 *p; + int maxcount, status;
- p = xdr_reserve_space(xdr, 4); - if (!p) + maxcount_p = xdr_reserve_space(xdr, XDR_UNIT); + if (!maxcount_p) return nfserr_resource; maxcount = PAGE_SIZE;
@@ -4050,14 +4047,11 @@ nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd nfserr = nfserrno(status); goto out_err; } - - wire_count = htonl(maxcount); - write_bytes_to_xdr_buf(xdr->buf, length_offset, &wire_count, 4); - xdr_truncate_encode(xdr, length_offset + 4 + ALIGN(maxcount, 4)); - if (maxcount & 3) - write_bytes_to_xdr_buf(xdr->buf, length_offset + 4 + maxcount, - &zero, 4 - (maxcount&3)); - return 0; + *maxcount_p = cpu_to_be32(maxcount); + xdr_truncate_encode(xdr, length_offset + 4 + xdr_align_size(maxcount)); + write_bytes_to_xdr_buf(xdr->buf, length_offset + 4 + maxcount, &zero, + xdr_pad_size(maxcount)); + return nfs_ok;
out_err: xdr_truncate_encode(xdr, length_offset);