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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2010-01-26 15:42:21 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-02-23 07:37:51 -0800 |
| commit | e7055c2366a5a5b507492905200d4327949b81ce (patch) | |
| tree | 4bcf788d5f305f7e67ee8418975f4d9354c7cbd1 /fs | |
| parent | 1236ff906f9d3044cd24d22463c3c943ee92e3a2 (diff) | |
| download | lwn-e7055c2366a5a5b507492905200d4327949b81ce.tar.gz lwn-e7055c2366a5a5b507492905200d4327949b81ce.zip | |
NFSv4: Ensure that the NFSv4 locking can recover from stateid errors
commit 2bee72a6aa1e6d0a4f5da56217f0d0bbbdd0d9a3 upstream.
In most cases, we just want to mark the lock_stateid sequence id as being
uninitialised.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfs/nfs4proc.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 8dbee6291284..6c200595099f 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -3978,6 +3978,22 @@ static const struct rpc_call_ops nfs4_lock_ops = { .rpc_release = nfs4_lock_release, }; +static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) +{ + struct nfs_client *clp = server->nfs_client; + struct nfs4_state *state = lsp->ls_state; + + switch (error) { + case -NFS4ERR_ADMIN_REVOKED: + case -NFS4ERR_BAD_STATEID: + case -NFS4ERR_EXPIRED: + if (new_lock_owner != 0 || + (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) + nfs4_state_mark_reclaim_nograce(clp, state); + lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; + }; +} + static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int reclaim) { struct nfs4_lockdata *data; @@ -4013,6 +4029,9 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f ret = nfs4_wait_for_completion_rpc_task(task); if (ret == 0) { ret = data->rpc_status; + if (ret) + nfs4_handle_setlk_error(data->server, data->lsp, + data->arg.new_lock_owner, ret); } else data->cancelled = 1; rpc_put_task(task); |