[squash with: nfs41: New backchannel helper routines] Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@xxxxxxxxxx> --- net/sunrpc/backchannel_rqst.c | 11 ++++++++++- 1 files changed, 10 insertions(+), 1 deletions(-) diff --git a/net/sunrpc/backchannel_rqst.c b/net/sunrpc/backchannel_rqst.c index 8f177a5..5a7d342 100644 --- a/net/sunrpc/backchannel_rqst.c +++ b/net/sunrpc/backchannel_rqst.c @@ -1,8 +1,9 @@ /****************************************************************************** (c) 2007 Network Appliance, Inc. All Rights Reserved. +(c) 2009 NetApp. All Rights Reserved. -Network Appliance provides this source code under the GPL v2 License. +NetApp provides this source code under the GPL v2 License. The GPL v2 license is available at http://opensource.org/licenses/gpl-license.php. @@ -75,6 +76,14 @@ static void xprt_free_allocation(struct rpc_rqst *req) * incoming callback request. It's up to the higher levels in the * stack to enforce that the maximum number of session slots is not * being exceeded. + * + * Some callback arguments can be large. For example, a pNFS server + * using multiple deviceids. The list can be unbound, but the client + * has the ability to tell the server the maximum size of the callback + * requests. Each deviceID is 16 bytes, so allocate one page + * for the arguments to have enough room to receive a number of these + * deviceIDs. The NFS client indicates to the pNFS server that its + * callback requests can be up to 4096 bytes in size. */ int xprt_setup_backchannel(struct rpc_xprt *xprt, unsigned int min_reqs) { -- 1.5.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
