staging/lustre/ldlm: move namespaces/lru_max_age to sysfs

Move ldlm display of lru_max_age from procfs to sysfs

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c b/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c
index fba09e454dce47323d54b70a73751da6e705ae9a..9fab434572e704449ef03080060d1be364208c39 100644 (file)
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c
@@ -287,6 +287,33 @@ static ssize_t lru_size_store(struct kobject *kobj, struct attribute *attr,
 }
 LUSTRE_RW_ATTR(lru_size);
 
+static ssize_t lru_max_age_show(struct kobject *kobj, struct attribute *attr,
+                               char *buf)
+{
+       struct ldlm_namespace *ns = container_of(kobj, struct ldlm_namespace,
+                                                ns_kobj);
+
+       return sprintf(buf, "%u", ns->ns_max_age);
+}
+
+static ssize_t lru_max_age_store(struct kobject *kobj, struct attribute *attr,
+                                const char *buffer, size_t count)
+{
+       struct ldlm_namespace *ns = container_of(kobj, struct ldlm_namespace,
+                                                ns_kobj);
+       unsigned long tmp;
+       int err;
+
+       err = kstrtoul(buffer, 10, &tmp);
+       if (err != 0)
+               return -EINVAL;
+
+       ns->ns_max_age = tmp;
+
+       return count;
+}
+LUSTRE_RW_ATTR(lru_max_age);
+
 static ssize_t early_lock_cancel_show(struct kobject *kobj,
                                      struct attribute *attr,
                                      char *buf)
@@ -325,6 +352,7 @@ static struct attribute *ldlm_ns_attrs[] = {
        &lustre_attr_lock_count.attr,
        &lustre_attr_lock_unused_count.attr,
        &lustre_attr_lru_size.attr,
+       &lustre_attr_lru_max_age.attr,
        &lustre_attr_early_lock_cancel.attr,
        NULL,
 };
@@ -414,8 +442,6 @@ int ldlm_namespace_proc_register(struct ldlm_namespace *ns)
        lock_vars[0].name = lock_name;
 
        if (ns_is_client(ns)) {
-               LDLM_NS_ADD_VAR("lru_max_age", &ns->ns_max_age,
-                               &ldlm_rw_uint_fops);
        } else {
                LDLM_NS_ADD_VAR("ctime_age_limit", &ns->ns_ctime_age_limit,
                                &ldlm_rw_uint_fops);

diff --git a/drivers/staging/lustre/sysfs-fs-lustre b/drivers/staging/lustre/sysfs-fs-lustre
index f92f7cf65e7e081d5189baeb575cc69b56e78518..3aaa5ae9e0c4fb8a3969ab6e990da2319b97415b 100644 (file)
--- a/drivers/staging/lustre/sysfs-fs-lustre
+++ b/drivers/staging/lustre/sysfs-fs-lustre
@@ -230,6 +230,13 @@ Description:
                Display number of locks currently sitting in the LRU list
                of this namespace
 
+What:          /sys/fs/lustre/ldlm/namespaces/<name>/lru_max_age
+Date:          May 2015
+Contact:       "Oleg Drokin" <oleg.drokin@intel.com>
+Description:
+               Maximum number of milliseconds a lock could sit in LRU list
+               before client would voluntarily cancel it as unused.
+
 What:          /sys/fs/lustre/ldlm/namespaces/<name>/early_lock_cancel
 Date:          May 2015
 Contact:       "Oleg Drokin" <oleg.drokin@intel.com>