SUNRPC: mark bulk read/write data in xdrbuf
Adds a flag word to the xdrbuf struct which indicates any bulk
disposition of the data. This enables RPC transport providers to
marshal it efficiently/appropriately, and may enable other
optimizations.
Signed-off-by: Tom Talpey <tmt@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h
index c6b53d1..0751c94 100644
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -70,7 +70,10 @@
struct page ** pages; /* Array of contiguous pages */
unsigned int page_base, /* Start of page data */
- page_len; /* Length of page data */
+ page_len, /* Length of page data */
+ flags; /* Flags for data disposition */
+#define XDRBUF_READ 0x01 /* target of file read */
+#define XDRBUF_WRITE 0x02 /* source of file write */
unsigned int buflen, /* Total length of storage buffer */
len; /* Length of XDR encoded message */