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| author | Andy Adamson <andros@netapp.com> | 2012-04-27 17:53:52 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-05-19 17:55:32 -0400 |
| commit | b4a2967e52523dbf0281b52c042f9042c6082f99 (patch) | |
| tree | e35824780a7d474501af611161e4181e95b18691 /fs/nfs/nfs4filelayoutdev.c | |
| parent | 3a7936c3fc469c196d9163abfea6b7aa9572d443 (diff) | |
| download | op-kernel-dev-b4a2967e52523dbf0281b52c042f9042c6082f99.zip op-kernel-dev-b4a2967e52523dbf0281b52c042f9042c6082f99.tar.gz | |
NFSv4.1 dereference a disconnected data server client record
When the last DS io is processed, the data server client record will be
freed.
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4filelayoutdev.c')
| -rw-r--r-- | fs/nfs/nfs4filelayoutdev.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/fs/nfs/nfs4filelayoutdev.c b/fs/nfs/nfs4filelayoutdev.c index d4d2032..bf49b78 100644 --- a/fs/nfs/nfs4filelayoutdev.c +++ b/fs/nfs/nfs4filelayoutdev.c @@ -149,6 +149,28 @@ _data_server_lookup_locked(const struct list_head *dsaddrs) } /* + * Lookup DS by nfs_client pointer. Zero data server client pointer + */ +void nfs4_ds_disconnect(struct nfs_client *clp) +{ + struct nfs4_pnfs_ds *ds; + struct nfs_client *found = NULL; + + dprintk("%s clp %p\n", __func__, clp); + spin_lock(&nfs4_ds_cache_lock); + list_for_each_entry(ds, &nfs4_data_server_cache, ds_node) + if (ds->ds_clp && ds->ds_clp == clp) { + found = ds->ds_clp; + ds->ds_clp = NULL; + } + spin_unlock(&nfs4_ds_cache_lock); + if (found) { + set_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state); + nfs_put_client(clp); + } +} + +/* * Create an rpc connection to the nfs4_pnfs_ds data server * Currently only supports IPv4 and IPv6 addresses */ |
