}
LPROC_SEQ_FOPS(zfs_osd_index_backup);
+static int zfs_osd_readcache_seq_show(struct seq_file *m, void *data)
+{
+ struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
+
+ LASSERT(osd != NULL);
+ if (unlikely(osd->od_os == NULL))
+ return -EINPROGRESS;
+
+ seq_printf(m, "%llu\n", osd->od_readcache_max_filesize);
+ return 0;
+}
+
+static ssize_t
+zfs_osd_readcache_seq_write(struct file *file, const char __user *buffer,
+ size_t count, loff_t *off)
+{
+ struct seq_file *m = file->private_data;
+ struct dt_device *dt = m->private;
+ struct osd_device *osd = osd_dt_dev(dt);
+ s64 val;
+ int rc;
+
+ LASSERT(osd != NULL);
+ if (unlikely(osd->od_os == NULL))
+ return -EINPROGRESS;
+
+ rc = lprocfs_str_with_units_to_s64(buffer, count, &val, '1');
+ if (rc)
+ return rc;
+ if (val < 0)
+ return -ERANGE;
+
+ osd->od_readcache_max_filesize = val > OSD_MAX_CACHE_SIZE ?
+ OSD_MAX_CACHE_SIZE : val;
+ return count;
+}
+LPROC_SEQ_FOPS(zfs_osd_readcache);
+
LPROC_SEQ_FOPS_RO_TYPE(zfs, dt_blksize);
LPROC_SEQ_FOPS_RO_TYPE(zfs, dt_kbytestotal);
LPROC_SEQ_FOPS_RO_TYPE(zfs, dt_kbytesfree);
.fops = &zfs_osd_force_sync_fops },
{ .name = "index_backup",
.fops = &zfs_osd_index_backup_fops },
+ { .name = "readcache_max_filesize",
+ .fops = &zfs_osd_readcache_fops },
{ 0 }
};