LU-14641 osd-ldiskfs: write commit declaring improvement

[fs/lustre-release.git] / lustre / osd-ldiskfs / osd_lproc.c

diff --git a/lustre/osd-ldiskfs/osd_lproc.c b/lustre/osd-ldiskfs/osd_lproc.c
index 4e787d5..906e53a 100644 (file)
--- a/lustre/osd-ldiskfs/osd_lproc.c
+++ b/lustre/osd-ldiskfs/osd_lproc.c
@@ -574,6 +574,24 @@ static ssize_t full_scrub_threshold_rate_store(struct kobject *kobj,
 }
 LUSTRE_RW_ATTR(full_scrub_threshold_rate);
 
+static ssize_t extent_bytes_allocation_show(struct kobject *kobj,
+                                           struct attribute *attr, char *buf)
+{
+       struct dt_device *dt = container_of(kobj, struct dt_device,
+                                           dd_kobj);
+       struct osd_device *dev = osd_dt_dev(dt);
+       int i;
+       unsigned int min = (unsigned int)(~0), cur;
+
+       for_each_online_cpu(i) {
+               cur = *per_cpu_ptr(dev->od_extent_bytes_percpu, i);
+               if (cur < min)
+                       min = cur;
+       }
+       return snprintf(buf, PAGE_SIZE, "%u\n", min);
+}
+LUSTRE_RO_ATTR(extent_bytes_allocation);
+
 static int ldiskfs_osd_oi_scrub_seq_show(struct seq_file *m, void *data)
 {
        struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
@@ -863,6 +881,7 @@ static struct attribute *ldiskfs_attrs[] = {
        &lustre_attr_pdo.attr,
        &lustre_attr_full_scrub_ratio.attr,
        &lustre_attr_full_scrub_threshold_rate.attr,
+       &lustre_attr_extent_bytes_allocation.attr,
        NULL,
 };