[PATCH AUTOSEL 5.2 20/63] pNFS: Ensure we do clear the return-on-close layout stateid on fatal errors

Sasha Levin
2019-10-01T16:57:39Z

From: Trond Myklebust <trondmy@gmail.com>

[ Upstream commit 9c47b18cf722184f32148784189fca945a7d0561 ]

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>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 bfe1f4625f603..33c2ef416564a 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);
--
2.20.1