nfsd4: remove unused dl_trunc
There's no point in keeping this field around--it's always zero.
(Background: the protocol allows you to tell the client that the file is
about to be truncated, as an optimization to save the client from
writing back dirty pages that will just be discarded. We don't
implement this hint. If we do some day, adding this field back in will
be the least of the work involved.)
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 2509305..0420b5e 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -224,7 +224,7 @@
WRITE32(OP_CB_RECALL);
WRITE32(dp->dl_stateid.si_generation);
WRITEMEM(&dp->dl_stateid.si_opaque, sizeof(stateid_opaque_t));
- WRITE32(dp->dl_trunc);
+ WRITE32(0); /* truncate optimization not implemented */
WRITE32(len);
WRITEMEM(&dp->dl_fh.fh_base, len);
return 0;
@@ -510,8 +510,6 @@
int retries = 1;
int status = 0;
- dp->dl_trunc = 0; /* XXX need to implement truncate optimization */
-
status = rpc_call_sync(clnt, &msg, RPC_TASK_SOFT);
while (retries--) {
switch (status) {