nfsd: make sessionid_hashtbl allocated per net

This hash holds established sessions state and closely associated with
nfs4_clients info, which are network namespace aware. So let's make it
allocated per network namespace too.

Note: this hash can be allocated in per-net operations. But it looks
better to allocate it on nfsd state start and thus don't waste resources
if server is not running.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/nfsd/netns.h b/fs/nfsd/netns.h
index 2281f6df5573..da33d3f804b0 100644
--- a/fs/nfsd/netns.h
+++ b/fs/nfsd/netns.h
@@ -32,6 +32,8 @@
 #define LOCKOWNER_INO_HASH_BITS         8
 #define LOCKOWNER_INO_HASH_SIZE         (1 << LOCKOWNER_INO_HASH_BITS)
 
+#define SESSION_HASH_SIZE       512
+
 struct cld_net;
 
 struct nfsd_net {
@@ -65,6 +67,7 @@ struct nfsd_net {
         struct rb_root unconf_name_tree;
         struct list_head *ownerstr_hashtbl;
         struct list_head *lockowner_ino_hashtbl;
+        struct list_head *sessionid_hashtbl;
 };
 
 extern int nfsd_net_id;