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From:   Trond Myklebust <trondmy@gmail.com>
To:     Anna Schumaker <Anna.Schumaker@netapp.com>
Cc:     Olga Kornievskaia <aglo@umich.edu>, linux-nfs@vger.kernel.org
Subject: [PATCH v2 1/9] pNFS: Ensure we do clear the return-on-close layout stateid on fatal errors
Date:   Mon, 16 Sep 2019 16:44:11 -0400
Message-Id: <20190916204419.21717-2-trond.myklebust@hammerspace.com>
In-Reply-To: <20190916204419.21717-1-trond.myklebust@hammerspace.com>
References: <20190916204419.21717-1-trond.myklebust@hammerspace.com>
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IF the server rejected our layout return with a state error such as
NFS4ERR_BAD_STATEID, or even a stale inode error, then we do want
to clear out all the remaining layout segments and mark that stateid
as invalid.

Fixes: 1c5bd76d17cca ("pNFS: Enable layoutreturn operation for...")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
---
 fs/nfs/pnfs.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 4525d5acae38..0418b198edd3 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -1449,10 +1449,15 @@ void pnfs_roc_release(struct nfs4_layoutreturn_args *args,
 	const nfs4_stateid *res_stateid = NULL;
 	struct nfs4_xdr_opaque_data *ld_private = args->ld_private;
 
-	if (ret == 0) {
-		arg_stateid = &args->stateid;
+	switch (ret) {
+	case -NFS4ERR_NOMATCHING_LAYOUT:
+		break;
+	case 0:
 		if (res->lrs_present)
 			res_stateid = &res->stateid;
+		/* Fallthrough */
+	default:
+		arg_stateid = &args->stateid;
 	}
 	pnfs_layoutreturn_free_lsegs(lo, arg_stateid, &args->range,
 			res_stateid);
-- 
2.21.0