From: Robert Milkowski <rmilkowski@gmail.com>
Date: Tue, 28 Jan 2020 08:37:47 +0000 (+0000)
Subject: NFSv4: try lease recovery on NFS4ERR_EXPIRED
X-Git-Tag: rel_imx_5.10.35_2.0.0-somdevices.0~2846^2~1
X-Git-Url: https://git.somdevices.com/?a=commitdiff_plain;h=924491f2e476f7234d722b24171a4daff61bbe13;p=linux.git

NFSv4: try lease recovery on NFS4ERR_EXPIRED

Currently, if an nfs server returns NFS4ERR_EXPIRED to open(),
we return EIO to applications without even trying to recover.

Fixes: 272289a3df72 ("NFSv4: nfs4_do_handle_exception() handle revoke/expiry of a single stateid")
Signed-off-by: Robert Milkowski <rmilkowski@gmail.com>
Reviewed-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
---

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index df38db2eee3b..a4ace14756ac 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3199,6 +3199,11 @@ static struct nfs4_state *nfs4_do_open(struct inode *dir,
 			exception.retry = 1;
 			continue;
 		}
+		if (status == -NFS4ERR_EXPIRED) {
+			nfs4_schedule_lease_recovery(server->nfs_client);
+			exception.retry = 1;
+			continue;
+		}
 		if (status == -EAGAIN) {
 			/* We must have found a delegation */
 			exception.retry = 1;