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authorAndrew Elble <aweits@rit.edu>2015-08-31 12:06:41 -0400
committerJ. Bruce Fields <bfields@redhat.com>2015-09-02 10:05:28 -0400
commita457974f1b9524a6e7d0a0be10df760e7802d32f (patch)
tree37b55e649341948a5dcff9201e68fdaeae213d16 /fs/nfsd/nfs4state.c
parentf984a7ce58ea9a12eca7f960bdf68124c8589b60 (diff)
downloadlinux-a457974f1b9524a6e7d0a0be10df760e7802d32f.tar.bz2
nfsd: deal with DELEGRETURN racing with CB_RECALL
We have observed the server sending recalls for delegation stateids that have already been successfully returned. Change nfsd4_cb_recall_done() to return success if the client has returned the delegation. While this does not completely eliminate the sending of recalls for delegations that have already been returned, this does prevent unnecessarily declaring the callback path to be down. Reported-by: Eric Meddaugh <etmsys@rit.edu> Signed-off-by: Andrew Elble <aweits@rit.edu> Acked-by: Jeff Layton <jlayton@poochiereds.net> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/nfs4state.c')
-rw-r--r--fs/nfsd/nfs4state.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 08746ec1d44a..0f1d5691b795 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -3510,6 +3510,9 @@ static int nfsd4_cb_recall_done(struct nfsd4_callback *cb,
{
struct nfs4_delegation *dp = cb_to_delegation(cb);
+ if (dp->dl_stid.sc_type == NFS4_CLOSED_DELEG_STID)
+ return 1;
+
switch (task->tk_status) {
case 0:
return 1;