#include <lustre_disk.h>
#include <uapi/linux/lustre/lustre_param.h>
+static DEFINE_SPINLOCK(client_lock);
+static struct module *client_mod;
static int (*client_fill_super)(struct super_block *sb);
static void (*kill_super_cb)(struct super_block *sb);
*/
static int lmd_parse_nidlist(char *buf, char **endh)
{
- struct list_head nidlist;
+ LIST_HEAD(nidlist);
char *endp = buf;
char tmp;
int rc = 0;
tmp = *endp;
*endp = '\0';
- INIT_LIST_HEAD(&nidlist);
if (cfs_parse_nidlist(buf, strlen(buf), &nidlist) <= 0)
rc = 1;
cfs_free_nidlist(&nidlist);
max_t(int, simple_strtoul(s1 + 19, NULL, 10),
time_min);
clear++;
+ } else if (strncmp(s1, "no_precreate", 12) == 0) {
+ lmd->lmd_flags |= LMD_FLG_NO_PRECREATE;
+ clear++;
} else if (strncmp(s1, "noir", 4) == 0) {
lmd->lmd_flags |= LMD_FLG_NOIR; /* test purpose only. */
clear++;
}
if (lmd_is_client(lmd)) {
+ bool have_client = false;
+
CDEBUG(D_MOUNT, "Mounting client %s\n", lmd->lmd_profile);
- if (client_fill_super == NULL)
+ if (!client_fill_super)
request_module("lustre");
- if (client_fill_super == NULL) {
+ spin_lock(&client_lock);
+ if (client_fill_super && try_module_get(client_mod))
+ have_client = true;
+ spin_unlock(&client_lock);
+ if (!have_client) {
LCONSOLE_ERROR_MSG(0x165,
"Nothing registered for client mount! Is the 'lustre' module loaded?\n");
lustre_put_lsi(sb);
/* Connect and start */
/* (should always be ll_fill_super) */
rc = (*client_fill_super)(sb);
- /* c_f_s will call lustre_common_put_super on failure */
+ /* c_f_s will call lustre_common_put_super on failure,
+ * which takes care of the module reference.
+ */
}
} else {
#ifdef HAVE_SERVER_SUPPORT
* We can't call ll_fill_super by name because it lives in a module that
* must be loaded after this one.
*/
-void lustre_register_client_fill_super(int (*cfs)(struct super_block *sb))
+void lustre_register_super_ops(struct module *mod,
+ int (*cfs)(struct super_block *sb),
+ void (*ksc)(struct super_block *sb))
{
+ spin_lock(&client_lock);
+ client_mod = mod;
client_fill_super = cfs;
+ kill_super_cb = ksc;
+ spin_unlock(&client_lock);
}
-EXPORT_SYMBOL(lustre_register_client_fill_super);
-
-void lustre_register_kill_super_cb(void (*cfs)(struct super_block *sb))
-{
- kill_super_cb = cfs;
-}
-EXPORT_SYMBOL(lustre_register_kill_super_cb);
+EXPORT_SYMBOL(lustre_register_super_ops);
/***************** FS registration ******************/
#ifdef HAVE_FSTYPE_MOUNT