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NFSv4: Don't busy wait if NFSv4 session draining is interrupted 

Catch the ERESTARTSYS error so that it can be processed by the callers.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Trond Myklebust 2018-08-11 11:52:38 -04:00 committed by Anna Schumaker
parent e4648aa4f9
commit 8aafd2fde3
1 changed files with 13 additions and 5 deletions
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18
fs/nfs/nfs4state.c
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@ -274,7 +274,7 @@ static int nfs4_drain_slot_tbl(struct nfs4_slot_table *tbl)
static int nfs4_begin_drain_session(struct nfs_client *clp)
{
struct nfs4_session *ses = clp->cl_session;
int ret = 0;
int ret;
if (clp->cl_slot_tbl)
return nfs4_drain_slot_tbl(clp->cl_slot_tbl);
@ -1958,7 +1958,9 @@ static int nfs4_establish_lease(struct nfs_client *clp)
clp->cl_mvops->reboot_recovery_ops;
int status;
nfs4_begin_drain_session(clp);
status = nfs4_begin_drain_session(clp);
if (status != 0)
return status;
cred = nfs4_get_clid_cred(clp);
if (cred == NULL)
return -ENOENT;
@ -2046,7 +2048,9 @@ static int nfs4_try_migration(struct nfs_server *server, struct rpc_cred *cred)
goto out;
}
nfs4_begin_drain_session(clp);
status = nfs4_begin_drain_session(clp);
if (status != 0)
return status;
status = nfs4_replace_transport(server, locations);
if (status != 0) {
@ -2396,7 +2400,9 @@ static int nfs4_reset_session(struct nfs_client *clp)
if (!nfs4_has_session(clp))
return 0;
nfs4_begin_drain_session(clp);
status = nfs4_begin_drain_session(clp);
if (status != 0)
return status;
cred = nfs4_get_clid_cred(clp);
status = nfs4_proc_destroy_session(clp->cl_session, cred);
switch (status) {
@ -2439,7 +2445,9 @@ static int nfs4_bind_conn_to_session(struct nfs_client *clp)
if (!nfs4_has_session(clp))
return 0;
nfs4_begin_drain_session(clp);
ret = nfs4_begin_drain_session(clp);
if (ret != 0)
return ret;
cred = nfs4_get_clid_cred(clp);
ret = nfs4_proc_bind_conn_to_session(clp, cred);
if (cred)