dlm: use rsbtbl as resource directory

Remove the dir hash table (dirtbl), and use
the rsb hash table (rsbtbl) as the resource
directory.  It has always been an unnecessary
duplication of information.

This improves efficiency by using a single rsbtbl
lookup in many cases where both rsbtbl and dirtbl
lookups were needed previously.

This eliminates the need to handle cases of rsbtbl
and dirtbl being out of sync.

In many cases there will be memory savings because
the dir hash table no longer exists.

Signed-off-by: David Teigland <teigland@redhat.com>

1 files changed, 0 insertions, 7 deletions

diff --git a/fs/dlm/config.c b/fs/dlm/config.c
index e7e327d43fa5..9ccf7346834a 100644
--- a/fs/dlm/config.c
+++ b/fs/dlm/config.c
@@ -96,7 +96,6 @@ struct dlm_cluster {
         unsigned int cl_tcp_port;
         unsigned int cl_buffer_size;
         unsigned int cl_rsbtbl_size;
-        unsigned int cl_dirtbl_size;
         unsigned int cl_recover_timer;
         unsigned int cl_toss_secs;
         unsigned int cl_scan_secs;
@@ -113,7 +112,6 @@ enum {
         CLUSTER_ATTR_TCP_PORT = 0,
         CLUSTER_ATTR_BUFFER_SIZE,
         CLUSTER_ATTR_RSBTBL_SIZE,
-        CLUSTER_ATTR_DIRTBL_SIZE,
         CLUSTER_ATTR_RECOVER_TIMER,
         CLUSTER_ATTR_TOSS_SECS,
         CLUSTER_ATTR_SCAN_SECS,
@@ -189,7 +187,6 @@ __CONFIGFS_ATTR(name, 0644, name##_read, name##_write)
 CLUSTER_ATTR(tcp_port, 1);
 CLUSTER_ATTR(buffer_size, 1);
 CLUSTER_ATTR(rsbtbl_size, 1);
-CLUSTER_ATTR(dirtbl_size, 1);
 CLUSTER_ATTR(recover_timer, 1);
 CLUSTER_ATTR(toss_secs, 1);
 CLUSTER_ATTR(scan_secs, 1);
@@ -204,7 +201,6 @@ static struct configfs_attribute *cluster_attrs[] = {
         [CLUSTER_ATTR_TCP_PORT] = &cluster_attr_tcp_port.attr,
         [CLUSTER_ATTR_BUFFER_SIZE] = &cluster_attr_buffer_size.attr,
         [CLUSTER_ATTR_RSBTBL_SIZE] = &cluster_attr_rsbtbl_size.attr,
-        [CLUSTER_ATTR_DIRTBL_SIZE] = &cluster_attr_dirtbl_size.attr,
         [CLUSTER_ATTR_RECOVER_TIMER] = &cluster_attr_recover_timer.attr,
         [CLUSTER_ATTR_TOSS_SECS] = &cluster_attr_toss_secs.attr,
         [CLUSTER_ATTR_SCAN_SECS] = &cluster_attr_scan_secs.attr,
@@ -478,7 +474,6 @@ static struct config_group *make_cluster(struct config_group *g,
         cl->cl_tcp_port = dlm_config.ci_tcp_port;
         cl->cl_buffer_size = dlm_config.ci_buffer_size;
         cl->cl_rsbtbl_size = dlm_config.ci_rsbtbl_size;
-        cl->cl_dirtbl_size = dlm_config.ci_dirtbl_size;
         cl->cl_recover_timer = dlm_config.ci_recover_timer;
         cl->cl_toss_secs = dlm_config.ci_toss_secs;
         cl->cl_scan_secs = dlm_config.ci_scan_secs;
@@ -1050,7 +1045,6 @@ int dlm_our_addr(struct sockaddr_storage *addr, int num)
 #define DEFAULT_TCP_PORT       21064
 #define DEFAULT_BUFFER_SIZE     4096
 #define DEFAULT_RSBTBL_SIZE     1024
-#define DEFAULT_DIRTBL_SIZE     1024
 #define DEFAULT_RECOVER_TIMER      5
 #define DEFAULT_TOSS_SECS         10
 #define DEFAULT_SCAN_SECS          5
@@ -1066,7 +1060,6 @@ struct dlm_config_info dlm_config = {
         .ci_tcp_port = DEFAULT_TCP_PORT,
         .ci_buffer_size = DEFAULT_BUFFER_SIZE,
         .ci_rsbtbl_size = DEFAULT_RSBTBL_SIZE,
-        .ci_dirtbl_size = DEFAULT_DIRTBL_SIZE,
         .ci_recover_timer = DEFAULT_RECOVER_TIMER,
         .ci_toss_secs = DEFAULT_TOSS_SECS,
         .ci_scan_secs = DEFAULT_SCAN_SECS,