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Subject[PATCH 04/17] staging: lustre: remove unused hash tables.
exp_lock_hash and exp_flock_hash are unused in
the client, so remove all references.

Also remove unused hashtable size definitions.

Signed-off-by: NeilBrown <neilb@suse.com>
---
drivers/staging/lustre/lustre/include/lustre_dlm.h | 10 -------
.../staging/lustre/lustre/include/lustre_export.h | 7 -----
.../staging/lustre/lustre/include/obd_support.h | 18 -------------
drivers/staging/lustre/lustre/ldlm/ldlm_flock.c | 11 +-------
drivers/staging/lustre/lustre/ldlm/ldlm_lock.c | 14 ----------
drivers/staging/lustre/lustre/ldlm/ldlm_request.c | 27 +-------------------
drivers/staging/lustre/lustre/obdclass/genops.c | 2 -
7 files changed, 3 insertions(+), 86 deletions(-)

diff --git a/drivers/staging/lustre/lustre/include/lustre_dlm.h b/drivers/staging/lustre/lustre/include/lustre_dlm.h
index 7407acf60cf8..5a355fbab401 100644
--- a/drivers/staging/lustre/lustre/include/lustre_dlm.h
+++ b/drivers/staging/lustre/lustre/include/lustre_dlm.h
@@ -629,16 +629,6 @@ struct ldlm_lock {
* Tree node for ldlm_extent.
*/
struct ldlm_interval *l_tree_node;
- /**
- * Per export hash of locks.
- * Protected by per-bucket exp->exp_lock_hash locks.
- */
- struct hlist_node l_exp_hash;
- /**
- * Per export hash of flock locks.
- * Protected by per-bucket exp->exp_flock_hash locks.
- */
- struct hlist_node l_exp_flock_hash;
/**
* Requested mode.
* Protected by lr_lock.
diff --git a/drivers/staging/lustre/lustre/include/lustre_export.h b/drivers/staging/lustre/lustre/include/lustre_export.h
index 40cd168ed2ea..19ce13bc8ee6 100644
--- a/drivers/staging/lustre/lustre/include/lustre_export.h
+++ b/drivers/staging/lustre/lustre/include/lustre_export.h
@@ -102,13 +102,6 @@ struct obd_export {
struct ptlrpc_connection *exp_connection;
/** Connection count value from last successful reconnect rpc */
__u32 exp_conn_cnt;
- /** Hash list of all ldlm locks granted on this export */
- struct cfs_hash *exp_lock_hash;
- /**
- * Hash list for Posix lock deadlock detection, added with
- * ldlm_lock::l_exp_flock_hash.
- */
- struct cfs_hash *exp_flock_hash;
struct list_head exp_outstanding_replies;
struct list_head exp_uncommitted_replies;
spinlock_t exp_uncommitted_replies_lock;
diff --git a/drivers/staging/lustre/lustre/include/obd_support.h b/drivers/staging/lustre/lustre/include/obd_support.h
index 8595091b8b86..eb2d6cb6b40b 100644
--- a/drivers/staging/lustre/lustre/include/obd_support.h
+++ b/drivers/staging/lustre/lustre/include/obd_support.h
@@ -67,27 +67,9 @@ extern char obd_jobid_var[];
#define HASH_UUID_BKT_BITS 5
#define HASH_UUID_CUR_BITS 7
#define HASH_UUID_MAX_BITS 12
-#define HASH_NID_BKT_BITS 5
-#define HASH_NID_CUR_BITS 7
-#define HASH_NID_MAX_BITS 12
-#define HASH_NID_STATS_BKT_BITS 5
-#define HASH_NID_STATS_CUR_BITS 7
-#define HASH_NID_STATS_MAX_BITS 12
-#define HASH_LQE_BKT_BITS 5
-#define HASH_LQE_CUR_BITS 7
-#define HASH_LQE_MAX_BITS 12
#define HASH_CONN_BKT_BITS 5
#define HASH_CONN_CUR_BITS 5
#define HASH_CONN_MAX_BITS 15
-#define HASH_EXP_LOCK_BKT_BITS 5
-#define HASH_EXP_LOCK_CUR_BITS 7
-#define HASH_EXP_LOCK_MAX_BITS 16
-#define HASH_CL_ENV_BKT_BITS 5
-#define HASH_CL_ENV_BITS 10
-#define HASH_JOB_STATS_BKT_BITS 5
-#define HASH_JOB_STATS_CUR_BITS 7
-#define HASH_JOB_STATS_MAX_BITS 12
-
/* Timeout definitions */
#define OBD_TIMEOUT_DEFAULT 100
/* Time to wait for all clients to reconnect during recovery (hard limit) */
diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c b/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c
index 411b540b96d9..94f3b1e49896 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c
@@ -83,9 +83,6 @@ ldlm_flock_destroy(struct ldlm_lock *lock, enum ldlm_mode mode)
LDLM_DEBUG(lock, "%s(mode: %d)",
__func__, mode);

- /* Safe to not lock here, since it should be empty anyway */
- LASSERT(hlist_unhashed(&lock->l_exp_flock_hash));
-
list_del_init(&lock->l_res_link);

/* client side - set a flag to prevent sending a CANCEL */
@@ -263,15 +260,9 @@ static int ldlm_process_flock_lock(struct ldlm_lock *req)
lock->l_policy_data.l_flock.start =
new->l_policy_data.l_flock.end + 1;
new2->l_conn_export = lock->l_conn_export;
- if (lock->l_export) {
+ if (lock->l_export)
new2->l_export = class_export_lock_get(lock->l_export,
new2);
- if (new2->l_export->exp_lock_hash &&
- hlist_unhashed(&new2->l_exp_hash))
- cfs_hash_add(new2->l_export->exp_lock_hash,
- &new2->l_remote_handle,
- &new2->l_exp_hash);
- }
ldlm_lock_addref_internal_nolock(new2,
lock->l_granted_mode);

diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c b/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c
index 95bea351d21d..b8fd778d9832 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_lock.c
@@ -318,18 +318,6 @@ static int ldlm_lock_destroy_internal(struct ldlm_lock *lock)
}
ldlm_set_destroyed(lock);

- if (lock->l_export && lock->l_export->exp_lock_hash) {
- /* NB: it's safe to call cfs_hash_del() even lock isn't
- * in exp_lock_hash.
- */
- /* In the function below, .hs_keycmp resolves to
- * ldlm_export_lock_keycmp()
- */
- /* coverity[overrun-buffer-val] */
- cfs_hash_del(lock->l_export->exp_lock_hash,
- &lock->l_remote_handle, &lock->l_exp_hash);
- }
-
ldlm_lock_remove_from_lru(lock);
class_handle_unhash(&lock->l_handle);

@@ -419,8 +407,6 @@ static struct ldlm_lock *ldlm_lock_new(struct ldlm_resource *resource)
lock->l_blocking_lock = NULL;
INIT_LIST_HEAD(&lock->l_sl_mode);
INIT_LIST_HEAD(&lock->l_sl_policy);
- INIT_HLIST_NODE(&lock->l_exp_hash);
- INIT_HLIST_NODE(&lock->l_exp_flock_hash);

lprocfs_counter_incr(ldlm_res_to_ns(resource)->ns_stats,
LDLM_NSS_LOCKS);
diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_request.c b/drivers/staging/lustre/lustre/ldlm/ldlm_request.c
index be43958e4090..8e79f5e073ff 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_request.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_request.c
@@ -405,19 +405,7 @@ int ldlm_cli_enqueue_fini(struct obd_export *exp, struct ptlrpc_request *req,
cleanup_phase = 0;

lock_res_and_lock(lock);
- /* Key change rehash lock in per-export hash with new key */
- if (exp->exp_lock_hash) {
- /* In the function below, .hs_keycmp resolves to
- * ldlm_export_lock_keycmp()
- */
- /* coverity[overrun-buffer-val] */
- cfs_hash_rehash_key(exp->exp_lock_hash,
- &lock->l_remote_handle,
- &reply->lock_handle,
- &lock->l_exp_hash);
- } else {
- lock->l_remote_handle = reply->lock_handle;
- }
+ lock->l_remote_handle = reply->lock_handle;

*flags = ldlm_flags_from_wire(reply->lock_flags);
lock->l_flags |= ldlm_flags_from_wire(reply->lock_flags &
@@ -1884,18 +1872,7 @@ static int replay_lock_interpret(const struct lu_env *env,

/* Key change rehash lock in per-export hash with new key */
exp = req->rq_export;
- if (exp && exp->exp_lock_hash) {
- /* In the function below, .hs_keycmp resolves to
- * ldlm_export_lock_keycmp()
- */
- /* coverity[overrun-buffer-val] */
- cfs_hash_rehash_key(exp->exp_lock_hash,
- &lock->l_remote_handle,
- &reply->lock_handle,
- &lock->l_exp_hash);
- } else {
- lock->l_remote_handle = reply->lock_handle;
- }
+ lock->l_remote_handle = reply->lock_handle;

LDLM_DEBUG(lock, "replayed lock:");
ptlrpc_import_recovery_state_machine(req->rq_import);
diff --git a/drivers/staging/lustre/lustre/obdclass/genops.c b/drivers/staging/lustre/lustre/obdclass/genops.c
index 63ccbabb4c5a..86e22472719a 100644
--- a/drivers/staging/lustre/lustre/obdclass/genops.c
+++ b/drivers/staging/lustre/lustre/obdclass/genops.c
@@ -721,8 +721,6 @@ struct obd_export *class_new_export(struct obd_device *obd,
return ERR_PTR(-ENOMEM);

export->exp_conn_cnt = 0;
- export->exp_lock_hash = NULL;
- export->exp_flock_hash = NULL;
atomic_set(&export->exp_refcount, 2);
atomic_set(&export->exp_rpc_count, 0);
atomic_set(&export->exp_cb_count, 0);

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