LU-9727 lustre: record denied OPEN in Changelogs

[fs/lustre-release.git] / lustre / mdd / mdd_lproc.c

diff --git a/lustre/mdd/mdd_lproc.c b/lustre/mdd/mdd_lproc.c
index 923cca1..6d6af2f 100644 (file)
--- a/lustre/mdd/mdd_lproc.c
+++ b/lustre/mdd/mdd_lproc.c
@@ -394,6 +394,41 @@ mdd_changelog_min_free_cat_entries_seq_write(struct file *file,
 }
 LPROC_SEQ_FOPS(mdd_changelog_min_free_cat_entries);
 
+static int mdd_changelog_deniednext_seq_show(struct seq_file *m, void *data)
+{
+       struct mdd_device *mdd = m->private;
+
+       seq_printf(m, "%u\n", mdd->mdd_cl.mc_deniednext);
+       return 0;
+}
+
+static ssize_t
+mdd_changelog_deniednext_seq_write(struct file *file, const char __user *buffer,
+                                  size_t count, loff_t *off)
+{
+       struct seq_file *m = file->private_data;
+       struct mdd_device *mdd = m->private;
+       char kernbuf[11];
+       unsigned int time = 0;
+       int rc;
+
+       if (count > (sizeof(kernbuf) - 1))
+               return -EINVAL;
+
+       if (copy_from_user(kernbuf, buffer, count))
+               return -EFAULT;
+
+       kernbuf[count] = '\0';
+
+       rc = kstrtoul(kernbuf, 0, (unsigned long int *)&time);
+       if (rc)
+               return rc;
+
+       mdd->mdd_cl.mc_deniednext = time;
+       return count;
+}
+LPROC_SEQ_FOPS(mdd_changelog_deniednext);
+
 static int mdd_sync_perm_seq_show(struct seq_file *m, void *data)
 {
        struct mdd_device *mdd = m->private;
@@ -521,6 +556,8 @@ static struct lprocfs_vars lprocfs_mdd_obd_vars[] = {
          .fops =       &mdd_changelog_min_gc_interval_fops     },
        { .name =       "changelog_min_free_cat_entries",
          .fops =       &mdd_changelog_min_free_cat_entries_fops        },
+       { .name =       "changelog_deniednext",
+         .fops =       &mdd_changelog_deniednext_fops  },
        { .name =       "sync_permission",
          .fops =       &mdd_sync_perm_fops             },
        { .name =       "lfsck_speed_limit",