diff options
Diffstat (limited to 'block/genhd.c')
| -rw-r--r-- | block/genhd.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/block/genhd.c b/block/genhd.c index f4c64c2b303a..5b76bf55d05c 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -869,6 +869,7 @@ static DEVICE_ATTR(size, S_IRUGO, part_size_show, NULL); static DEVICE_ATTR(alignment_offset, S_IRUGO, disk_alignment_offset_show, NULL); static DEVICE_ATTR(capability, S_IRUGO, disk_capability_show, NULL); static DEVICE_ATTR(stat, S_IRUGO, part_stat_show, NULL); +static DEVICE_ATTR(inflight, S_IRUGO, part_inflight_show, NULL); #ifdef CONFIG_FAIL_MAKE_REQUEST static struct device_attribute dev_attr_fail = __ATTR(make-it-fail, S_IRUGO|S_IWUSR, part_fail_show, part_fail_store); @@ -888,6 +889,7 @@ static struct attribute *disk_attrs[] = { &dev_attr_alignment_offset.attr, &dev_attr_capability.attr, &dev_attr_stat.attr, + &dev_attr_inflight.attr, #ifdef CONFIG_FAIL_MAKE_REQUEST &dev_attr_fail.attr, #endif @@ -1053,7 +1055,7 @@ static int diskstats_show(struct seq_file *seqf, void *v) part_stat_read(hd, merges[1]), (unsigned long long)part_stat_read(hd, sectors[1]), jiffies_to_msecs(part_stat_read(hd, ticks[1])), - hd->in_flight, + part_in_flight(hd), jiffies_to_msecs(part_stat_read(hd, io_ticks)), jiffies_to_msecs(part_stat_read(hd, time_in_queue)) ); @@ -1215,6 +1217,16 @@ void put_disk(struct gendisk *disk) EXPORT_SYMBOL(put_disk); +static void set_disk_ro_uevent(struct gendisk *gd, int ro) +{ + char event[] = "DISK_RO=1"; + char *envp[] = { event, NULL }; + + if (!ro) + event[8] = '0'; + kobject_uevent_env(&disk_to_dev(gd)->kobj, KOBJ_CHANGE, envp); +} + void set_device_ro(struct block_device *bdev, int flag) { bdev->bd_part->policy = flag; @@ -1227,8 +1239,12 @@ void set_disk_ro(struct gendisk *disk, int flag) struct disk_part_iter piter; struct hd_struct *part; - disk_part_iter_init(&piter, disk, - DISK_PITER_INCL_EMPTY | DISK_PITER_INCL_PART0); + if (disk->part0.policy != flag) { + set_disk_ro_uevent(disk, flag); + disk->part0.policy = flag; + } + + disk_part_iter_init(&piter, disk, DISK_PITER_INCL_EMPTY); while ((part = disk_part_iter_next(&piter))) part->policy = flag; disk_part_iter_exit(&piter); |