[PATCH v6.12-rc1 5/7] dlm: use dlm_config as only cluster configuration

Alexander Aring
2024-10-04T15:13:54Z

This patch removes the configfs storage fields from the dlm_cluster
structure to store per cluster values. Those fields also exists for the
dlm_config global variable and get stored in both when setting configfs
values. To read values it will always be read out from the dlm_cluster
configfs structure but this patch changes it to only use the global
dlm_config variable. Storing them in two places makes no sense as both
are able to be changed under certain conditions during DLM runtime.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
---
fs/dlm/config.c | 47 +++++------------------------------------------
1 file changed, 5 insertions(+), 42 deletions(-)

diff --git a/fs/dlm/config.c b/fs/dlm/config.c
index 42dcf3f06668..ff18c7ace611 100644
--- a/fs/dlm/config.c
+++ b/fs/dlm/config.c
@@ -73,20 +73,6 @@ const struct rhashtable_params dlm_rhash_rsb_params = {

struct dlm_cluster {
struct config_group group;
- __be16 cl_tcp_port;
- unsigned int cl_buffer_size;
- unsigned int cl_rsbtbl_size;
- unsigned int cl_recover_timer;
- unsigned int cl_toss_secs;
- unsigned int cl_scan_secs;
- unsigned int cl_log_debug;
- unsigned int cl_log_info;
- unsigned int cl_protocol;
- unsigned int cl_mark;
- unsigned int cl_new_rsb_count;
- unsigned int cl_recover_callbacks;
- char cl_cluster_name[DLM_LOCKSPACE_LEN];
-
struct dlm_spaces *sps;
struct dlm_comms *cms;
};
@@ -115,18 +101,14 @@ enum {

static ssize_t cluster_cluster_name_show(struct config_item *item, char *buf)
{
- struct dlm_cluster *cl = config_item_to_cluster(item);
- return sprintf(buf, "%s\n", cl->cl_cluster_name);
+ return sprintf(buf, "%s\n", dlm_config.ci_cluster_name);
}

static ssize_t cluster_cluster_name_store(struct config_item *item,
const char *buf, size_t len)
{
- struct dlm_cluster *cl = config_item_to_cluster(item);
-
strscpy(dlm_config.ci_cluster_name, buf,
- sizeof(dlm_config.ci_cluster_name));
- strscpy(cl->cl_cluster_name, buf, sizeof(cl->cl_cluster_name));
+ sizeof(dlm_config.ci_cluster_name));
return len;
}

@@ -171,8 +153,7 @@ static ssize_t cluster_tcp_port_store(struct config_item *item,

CONFIGFS_ATTR(cluster_, tcp_port);

-static ssize_t cluster_set(struct dlm_cluster *cl, unsigned int *cl_field,
- int *info_field, int (*check_cb)(unsigned int x),
+static ssize_t cluster_set(int *info_field, int (*check_cb)(unsigned int x),
const char *buf, size_t len)
{
unsigned int x;
@@ -190,7 +171,6 @@ static ssize_t cluster_set(struct dlm_cluster *cl, unsigned int *cl_field,
return rc;
}

- *cl_field = x;
*info_field = x;

return len;
@@ -200,14 +180,11 @@ static ssize_t cluster_set(struct dlm_cluster *cl, unsigned int *cl_field,
static ssize_t cluster_##name##_store(struct config_item *item, \
const char *buf, size_t len) \
{ \
- struct dlm_cluster *cl = config_item_to_cluster(item); \
- return cluster_set(cl, &cl->cl_##name, &dlm_config.ci_##name, \
- check_cb, buf, len); \
+ return cluster_set(&dlm_config.ci_##name, check_cb, buf, len); \
} \
static ssize_t cluster_##name##_show(struct config_item *item, char *buf) \
{ \
- struct dlm_cluster *cl = config_item_to_cluster(item); \
- return snprintf(buf, PAGE_SIZE, "%u\n", cl->cl_##name); \
+ return snprintf(buf, PAGE_SIZE, "%u\n", dlm_config.ci_##name); \
} \
CONFIGFS_ATTR(cluster_, name);

@@ -450,20 +427,6 @@ static struct config_group *make_cluster(struct config_group *g,
configfs_add_default_group(&sps->ss_group, &cl->group);
configfs_add_default_group(&cms->cs_group, &cl->group);

- 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_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;
- cl->cl_log_debug = dlm_config.ci_log_debug;
- cl->cl_log_info = dlm_config.ci_log_info;
- cl->cl_protocol = dlm_config.ci_protocol;
- cl->cl_new_rsb_count = dlm_config.ci_new_rsb_count;
- cl->cl_recover_callbacks = dlm_config.ci_recover_callbacks;
- memcpy(cl->cl_cluster_name, dlm_config.ci_cluster_name,
- DLM_LOCKSPACE_LEN);
-
space_list = &sps->ss_group;
comm_list = &cms->cs_group;
return &cl->group;
--
2.43.0