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authorRicardo Labiaga <Ricardo.Labiaga@netapp.com>2009-09-10 13:26:38 +0400
committerJ. Bruce Fields <bfields@citi.umich.edu>2009-09-16 04:49:56 +0400
commit2a1d1b593803d7c18a369bf148f3b48c5a3260fc (patch)
tree40cd8e5498ad680eec740923d512c0bf5fe114b3 /include/linux/nfsd
parent199ff35e1c8724871e157c2e48556c2794946e82 (diff)
downloadlinux-2a1d1b593803d7c18a369bf148f3b48c5a3260fc.tar.xz
nfsd41: Backchannel: Setup sequence information
Follows the model used by the NFS client. Setup the RPC prepare and done function pointers so that we can populate the sequence information if minorversion == 1. rpc_run_task() is then invoked directly just like existing NFS client operations do. nfsd4_cb_prepare() determines if the sequence information needs to be setup. If the slot is in use, it adds itself to the wait queue. nfsd4_cb_done() wakes anyone sleeping on the callback channel wait queue after our RPC reply has been received. It also sets the task message result pointer to NULL to clearly indicate we're done using it. Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> [define and initialize cl_cb_seq_nr here] [pulled out unused defintion of nfsd4_cb_done] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'include/linux/nfsd')
-rw-r--r--include/linux/nfsd/state.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/nfsd/state.h b/include/linux/nfsd/state.h
index 9cc40a137c34..b38d11324189 100644
--- a/include/linux/nfsd/state.h
+++ b/include/linux/nfsd/state.h
@@ -221,6 +221,7 @@ struct nfs4_client {
/* for nfs41 callbacks */
/* We currently support a single back channel with a single slot */
unsigned long cl_cb_slot_busy;
+ u32 cl_cb_seq_nr;
struct svc_xprt *cl_cb_xprt; /* 4.1 callback transport */
struct rpc_wait_queue cl_cb_waitq; /* backchannel callers may */
/* wait here for slots */