[PATCH] NFSv4: Return delegations synchronously in evict_inode

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Kinglong Mee reports that asynchronous delegations are being killed
by the call to rpc_shutdown_client() when unmounting. This can lead
to state leakage on the server until the client lease expires.

Reported-by: Kinglong Mee <kinglongmee@xxxxxxxxx>
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
 fs/nfs/delegation.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index a6ad68865880..08c624448750 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -514,7 +514,7 @@ void nfs_inode_return_delegation_noreclaim(struct inode *inode)
 
 	delegation = nfs_inode_detach_delegation(inode);
 	if (delegation != NULL)
-		nfs_do_return_delegation(inode, delegation, 0);
+		nfs_do_return_delegation(inode, delegation, 1);
 }
 
 /**
-- 
2.1.0

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