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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2008-12-23 15:21:48 -0500 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2008-12-23 15:21:48 -0500 |
| commit | f3c76491e7ecacbb7942633f3b2a3514b7476ef9 (patch) | |
| tree | 1b09c70b850639790b1d4cb908a574f549729617 /fs/nfs/nfs4state.c | |
| parent | e005e8041c132af9f70862e1387a222198f95e7f (diff) | |
| download | lwn-f3c76491e7ecacbb7942633f3b2a3514b7476ef9.tar.gz lwn-f3c76491e7ecacbb7942633f3b2a3514b7476ef9.zip | |
NFSv4: Don't exit the state management if there are still tasks to do
Fix up a potential race...
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4state.c')
| -rw-r--r-- | fs/nfs/nfs4state.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 83f3dd39ac55..9e76712dcae9 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1112,7 +1112,7 @@ static void nfs4_state_manager(struct nfs_client *clp) int status = 0; /* Ensure exclusive access to NFSv4 state */ - while (!list_empty(&clp->cl_superblocks)) { + for(;;) { if (test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) { /* We're going to have to re-establish a clientid */ status = nfs4_reclaim_lease(clp); @@ -1161,7 +1161,11 @@ static void nfs4_state_manager(struct nfs_client *clp) } nfs4_clear_state_manager_bit(clp); - break; + /* Did we race with an attempt to give us more work? */ + if (clp->cl_state == 0) + break; + if (test_and_set_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) != 0) + break; } return; out_error: |