NLM: Introduce external nlm_host set-up and tear-down functions
We would like to remove the per-lock-operation nlm_lookup_host() call from
nlmclnt_proc().
The new architecture pins an nlm_host structure to each NFS client
superblock that has the "lock" mount option set. The NFS client passes
in the pinned nlm_host structure during each call to nlmclnt_proc(). NFS
client unmount processing "puts" the nlm_host so it can be garbage-
collected later.
This patch introduces externally callable NLM functions that handle
mount-time nlm_host set up and tear-down.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/include/linux/lockd/bind.h b/include/linux/lockd/bind.h
index 6f1637c..ad5402f 100644
--- a/include/linux/lockd/bind.h
+++ b/include/linux/lockd/bind.h
@@ -35,6 +35,13 @@
/*
* Functions exported by the lockd module
*/
+extern struct nlm_host *nlmclnt_init(const char *server_name,
+ const struct sockaddr *server_address,
+ size_t server_addrlen,
+ unsigned short protocol,
+ u32 nfs_version);
+extern void nlmclnt_done(struct nlm_host *host);
+
extern int nlmclnt_proc(struct inode *, int, struct file_lock *);
extern int lockd_up(int proto);
extern void lockd_down(void);