LU-14542 obd: tunable for sanity grant check

[fs/lustre-release.git] / lustre / obdclass / lprocfs_status_server.c

diff --git a/lustre/obdclass/lprocfs_status_server.c b/lustre/obdclass/lprocfs_status_server.c
index a912ba6..a3ddaa9 100644 (file)
--- a/lustre/obdclass/lprocfs_status_server.c
+++ b/lustre/obdclass/lprocfs_status_server.c
@@ -154,6 +154,37 @@ ssize_t num_exports_show(struct kobject *kobj, struct attribute *attr,
 }
 EXPORT_SYMBOL(num_exports_show);
 
+ssize_t grant_check_threshold_show(struct kobject *kobj, struct attribute *attr,
+                                  char *buf)
+{
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
+
+       return scnprintf(buf, PAGE_SIZE, "%d\n",
+                        obd->obd_grant_check_threshold);
+}
+EXPORT_SYMBOL(grant_check_threshold_show);
+
+ssize_t grant_check_threshold_store(struct kobject *kobj,
+                                   struct attribute *attr,
+                                   const char *buffer, size_t count)
+{
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
+       int val;
+       int rc;
+
+       rc = kstrtoint(buffer, 10, &val);
+       if (rc)
+               return rc;
+
+       if (val < 0)
+               return -EINVAL;
+       obd->obd_grant_check_threshold = val;
+       return count;
+}
+EXPORT_SYMBOL(grant_check_threshold_store);
+
 static int obd_export_flags2str(struct obd_export *exp, struct seq_file *m)
 {
        bool first = true;