Eric Lee / linux-smarc-t335x-v3.2

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Commit 34db1d595ef6f183fbc1e42cda45a3dfa0035258

Authored by Kay Sievers
Committed by Jens Axboe
1 parent 2b9408a459
Exists in master and in 4 other branches v3.2_AM335xPSP_04.06.00.11, v3.2_NEWT335xPSP_04.06.00.11, v3.2_SBC_SMARTMEN, v3.2_SMARCT335xPSP_04.06.00.11

block: export 'ro' sysfs attribute for partitions 

We already export 'ro' for the disk. This adds the same attribute
for partitions.

Cc: Karel Zak <kzak@redhat.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

Showing 1 changed file with 9 additions and 0 deletions Side-by-side Diff

fs/partitions/check.c
Diff comments   View file @ 34db1d5
... ... @@ -237,6 +237,13 @@
237 237 return sprintf(buf, "%llu\n",(unsigned long long)p->nr_sects);
238 238 }
239 239  
  240 +ssize_t part_ro_show(struct device *dev,
  241 + struct device_attribute *attr, char *buf)
  242 +{
  243 + struct hd_struct *p = dev_to_part(dev);
  244 + return sprintf(buf, "%d\n", p->policy ? 1 : 0);
  245 +}
  246 +
240 247 ssize_t part_alignment_offset_show(struct device *dev,
241 248 struct device_attribute *attr, char *buf)
242 249 {
... ... @@ -312,6 +319,7 @@
312 319 static DEVICE_ATTR(partition, S_IRUGO, part_partition_show, NULL);
313 320 static DEVICE_ATTR(start, S_IRUGO, part_start_show, NULL);
314 321 static DEVICE_ATTR(size, S_IRUGO, part_size_show, NULL);
  322 +static DEVICE_ATTR(ro, S_IRUGO, part_ro_show, NULL);
315 323 static DEVICE_ATTR(alignment_offset, S_IRUGO, part_alignment_offset_show, NULL);
316 324 static DEVICE_ATTR(discard_alignment, S_IRUGO, part_discard_alignment_show,
317 325 NULL);
... ... @@ -326,6 +334,7 @@
326 334 &dev_attr_partition.attr,
327 335 &dev_attr_start.attr,
328 336 &dev_attr_size.attr,
  337 + &dev_attr_ro.attr,
329 338 &dev_attr_alignment_offset.attr,
330 339 &dev_attr_discard_alignment.attr,
331 340 &dev_attr_stat.attr,