From: Trond Myklebust <trond.myklebust@primarydata.com>
To: anna.schumaker@netapp.com
Cc: linux-nfs@vger.kernel.org, Oleg Drokin <green@linuxhacker.ru>
Subject: [PATCH v4 03/20] NFSv4.1: Allow test_stateid to handle session errors without waiting
Date: Thu, 15 Sep 2016 12:45:43 -0400 [thread overview]
Message-ID: <1473957960-10001-4-git-send-email-trond.myklebust@primarydata.com> (raw)
In-Reply-To: <1473957960-10001-3-git-send-email-trond.myklebust@primarydata.com>
If the server crashes while we're testing stateids for validity, then
we want to initiate session recovery. Usually, we will be calling from
a state manager thread, though, so we don't really want to wait.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
---
fs/nfs/nfs4proc.c | 21 ++++++++++++++++++---
1 file changed, 18 insertions(+), 3 deletions(-)
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index a026156434ae..2b569d5fb3e2 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -8598,6 +8598,23 @@ static int _nfs41_test_stateid(struct nfs_server *server,
return -res.status;
}
+static void nfs4_handle_delay_or_session_error(struct nfs_server *server,
+ int err, struct nfs4_exception *exception)
+{
+ exception->retry = 0;
+ switch(err) {
+ case -NFS4ERR_DELAY:
+ nfs4_handle_exception(server, err, exception);
+ break;
+ case -NFS4ERR_BADSESSION:
+ case -NFS4ERR_BADSLOT:
+ case -NFS4ERR_BAD_HIGH_SLOT:
+ case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
+ case -NFS4ERR_DEADSESSION:
+ nfs4_do_handle_exception(server, err, exception);
+ }
+}
+
/**
* nfs41_test_stateid - perform a TEST_STATEID operation
*
@@ -8617,9 +8634,7 @@ static int nfs41_test_stateid(struct nfs_server *server,
int err;
do {
err = _nfs41_test_stateid(server, stateid, cred);
- if (err != -NFS4ERR_DELAY)
- break;
- nfs4_handle_exception(server, err, &exception);
+ nfs4_handle_delay_or_session_error(server, err, &exception);
} while (exception.retry);
return err;
}
--
2.7.4
next prev parent reply other threads:[~2016-09-15 16:46 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-15 16:45 [PATCH v4 00/20] Fix delegation behaviour when server revokes some state Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 01/20] NFSv4.1: Don't deadlock the state manager on the SEQUENCE status flags Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 02/20] NFSv4.1: Don't check delegations that are already marked as revoked Trond Myklebust
2016-09-15 16:45 ` Trond Myklebust [this message]
2016-09-15 16:45 ` [PATCH v4 04/20] NFSv4.1: Add a helper function to deal with expired stateids Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 05/20] NFSv4.x: Allow callers of nfs_remove_bad_delegation() to specify a stateid Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 06/20] NFSv4.1: Test delegation stateids when server declares "some state revoked" Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 07/20] NFSv4.1: Deal with server reboots during delegation expiration recovery Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 08/20] NFSv4.1: Don't recheck delegations that have already been checked Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 09/20] NFSv4.1: Allow revoked stateids to skip the call to TEST_STATEID Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 10/20] NFSv4.1: Ensure we always run TEST/FREE_STATEID on locks Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 11/20] NFSv4.1: FREE_STATEID can be asynchronous Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 12/20] NFSv4.1: Ensure we call FREE_STATEID if needed on close/delegreturn/locku Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 13/20] NFSv4: nfs_inode_find_delegation_state_and_recover() should check all stateids Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 14/20] NFSv4: nfs4_do_handle_exception() handle revoke/expiry of a single stateid Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 15/20] NFSv4: nfs4_handle_delegation_recall_error() handle expiration as revoke case Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 16/20] NFSv4: nfs4_handle_setlk_error() " Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 17/20] NFSv4.1: nfs4_layoutget_handle_exception handle revoked state Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 18/20] NFSv4: Pass the stateid to the exception handler in nfs4_read/write_done_cb Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 19/20] NFSv4: Fix a race in nfs_inode_reclaim_delegation() Trond Myklebust
2016-09-15 16:46 ` [PATCH v4 20/20] NFSv4: Fix a race when updating an open_stateid Trond Myklebust
2016-09-15 22:17 ` kbuild test robot
2016-09-16 4:38 ` [PATCH v4 00/20] Fix delegation behaviour when server revokes some state Oleg Drokin
2016-09-16 15:36 ` Trond Myklebust
2016-09-16 21:15 ` Oleg Drokin
2016-09-16 21:21 ` Oleg Drokin
2016-09-16 21:28 ` Trond Myklebust
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