[3.8.y.z,extended,stable] Patch "NFSv4: Handle NFS4ERR_DELAY and NFS4ERR_GRACE in" has been added to staging queue

Message ID 1369259719-23914-1-git-send-email-kamal@canonical.com
State New
Headers show

Commit Message

Kamal Mostafa May 22, 2013, 9:55 p.m.
This is a note to let you know that I have just added a patch titled

    NFSv4: Handle NFS4ERR_DELAY and NFS4ERR_GRACE in

to the linux-3.8.y-queue branch of the 3.8.y.z extended stable tree 
which can be found at:


If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.8.y.z tree, see



From a418a647d1741537ec2ddc94a09e4765c6547c86 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Mon, 1 Apr 2013 14:27:29 -0400
Subject: NFSv4: Handle NFS4ERR_DELAY and NFS4ERR_GRACE in

commit dbb21c25a35a71baf413f5176f028ee11b88cfbc upstream.

A server shouldn't normally return NFS4ERR_GRACE if the client holds a
delegation, since no conflicting lock reclaims can be granted, however
the spec does not require the server to grant the lock in this

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
[ kamal: backport to 3.8 ]
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
 fs/nfs/nfs4proc.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)



diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index e3c6121..a404dae 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -4984,13 +4984,17 @@  int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl)
 				nfs4_schedule_stateid_recovery(server, state);
 				err = 0;
 				goto out;
+			case -NFS4ERR_DELAY:
+			case -NFS4ERR_GRACE:
+				set_bit(NFS_DELEGATED_STATE, &state->flags);
+				ssleep(1);
+				err = -EAGAIN;
+				goto out;
 			case -ENOMEM:
 			case -NFS4ERR_DENIED:
 				/* kill_proc(fl->fl_pid, SIGLOST, 1); */
 				err = 0;
 				goto out;
-			case -NFS4ERR_DELAY:
-				break;
 		err = nfs4_handle_exception(server, err, &exception);
 	} while (exception.retry);