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| author | Andy Adamson <andros@netapp.com> | 2011-03-01 01:34:10 +0000 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-03-11 15:38:41 -0500 |
| commit | d3b4c9d76738df49a7db7682c2518a0ef9f7391d (patch) | |
| tree | 69ab2ccad799bee8a00ad901b57739be44747fcd | |
| parent | 89d1ea65798953b251e399b17f32d31033889ae0 (diff) | |
| download | linux-d3b4c9d76738df49a7db7682c2518a0ef9f7391d.tar.gz linux-d3b4c9d76738df49a7db7682c2518a0ef9f7391d.tar.bz2 linux-d3b4c9d76738df49a7db7682c2518a0ef9f7391d.zip | |
NFSv4.1: new flag for state renewal check
Data servers not sharing a session with the mount MDS always have an empty
cl_superblocks list.
Replace the cl_superblocks empty list check to see if it is time to shut down
renewd with the NFS_CS_STOP_RENEW bit which is not set by such a data server.
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| -rw-r--r-- | fs/nfs/client.c | 5 | ||||
| -rw-r--r-- | fs/nfs/nfs4renewd.c | 6 | ||||
| -rw-r--r-- | include/linux/nfs_fs_sb.h | 1 |
3 files changed, 7 insertions, 5 deletions
diff --git a/fs/nfs/client.c b/fs/nfs/client.c index b9ed2a8bc26a..a86698cd82fd 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -1019,14 +1019,19 @@ static void nfs_server_insert_lists(struct nfs_server *server) spin_lock(&nfs_client_lock); list_add_tail_rcu(&server->client_link, &clp->cl_superblocks); list_add_tail(&server->master_link, &nfs_volume_list); + clear_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state); spin_unlock(&nfs_client_lock); } static void nfs_server_remove_lists(struct nfs_server *server) { + struct nfs_client *clp = server->nfs_client; + spin_lock(&nfs_client_lock); list_del_rcu(&server->client_link); + if (clp && list_empty(&clp->cl_superblocks)) + set_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state); list_del(&server->master_link); spin_unlock(&nfs_client_lock); diff --git a/fs/nfs/nfs4renewd.c b/fs/nfs/nfs4renewd.c index 402143d75fc5..df8e7f3ca56d 100644 --- a/fs/nfs/nfs4renewd.c +++ b/fs/nfs/nfs4renewd.c @@ -64,12 +64,8 @@ nfs4_renew_state(struct work_struct *work) ops = clp->cl_mvops->state_renewal_ops; dprintk("%s: start\n", __func__); - rcu_read_lock(); - if (list_empty(&clp->cl_superblocks)) { - rcu_read_unlock(); + if (test_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state)) goto out; - } - rcu_read_unlock(); spin_lock(&clp->cl_lock); lease = clp->cl_lease_time; diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 3e112de12d8d..0bac4176e505 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -30,6 +30,7 @@ struct nfs_client { #define NFS_CS_CALLBACK 1 /* - callback started */ #define NFS_CS_IDMAP 2 /* - idmap started */ #define NFS_CS_RENEWD 3 /* - renewd started */ +#define NFS_CS_STOP_RENEW 4 /* no more state to renew */ struct sockaddr_storage cl_addr; /* server identifier */ size_t cl_addrlen; char * cl_hostname; /* hostname of server */ |