#include <linux/kmod.h>
#include <linux/ctype.h>
#include <linux/genhd.h>
+#include <linux/blktrace_api.h>
#include "check.h"
return sprintf(buf, "%llu\n",(unsigned long long)p->nr_sects);
}
+ssize_t part_alignment_offset_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct hd_struct *p = dev_to_part(dev);
+ return sprintf(buf, "%llu\n", (unsigned long long)p->alignment_offset);
+}
+
+ssize_t part_discard_alignment_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct hd_struct *p = dev_to_part(dev);
+ return sprintf(buf, "%u\n", p->discard_alignment);
+}
+
ssize_t part_stat_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
part_stat_read(p, merges[WRITE]),
(unsigned long long)part_stat_read(p, sectors[WRITE]),
jiffies_to_msecs(part_stat_read(p, ticks[WRITE])),
- p->in_flight,
+ part_in_flight(p),
jiffies_to_msecs(part_stat_read(p, io_ticks)),
jiffies_to_msecs(part_stat_read(p, time_in_queue)));
}
+ssize_t part_inflight_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct hd_struct *p = dev_to_part(dev);
+
+ return sprintf(buf, "%8u %8u\n", p->in_flight[0], p->in_flight[1]);
+}
+
#ifdef CONFIG_FAIL_MAKE_REQUEST
ssize_t part_fail_show(struct device *dev,
struct device_attribute *attr, char *buf)
static DEVICE_ATTR(partition, S_IRUGO, part_partition_show, NULL);
static DEVICE_ATTR(start, S_IRUGO, part_start_show, NULL);
static DEVICE_ATTR(size, S_IRUGO, part_size_show, NULL);
+static DEVICE_ATTR(alignment_offset, S_IRUGO, part_alignment_offset_show, NULL);
+static DEVICE_ATTR(discard_alignment, S_IRUGO, part_discard_alignment_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);
&dev_attr_partition.attr,
&dev_attr_start.attr,
&dev_attr_size.attr,
+ &dev_attr_alignment_offset.attr,
+ &dev_attr_discard_alignment.attr,
&dev_attr_stat.attr,
+ &dev_attr_inflight.attr,
#ifdef CONFIG_FAIL_MAKE_REQUEST
&dev_attr_fail.attr,
#endif
.attrs = part_attrs,
};
-static struct attribute_group *part_attr_groups[] = {
+static const struct attribute_group *part_attr_groups[] = {
&part_attr_group,
+#ifdef CONFIG_BLK_DEV_IO_TRACE
+ &blk_trace_attr_group,
+#endif
NULL
};
blk_free_devt(part_devt(part));
rcu_assign_pointer(ptbl->part[partno], NULL);
+ rcu_assign_pointer(ptbl->last_lookup, NULL);
kobject_put(part->holder_dir);
device_del(part_to_dev(part));
pdev = part_to_dev(p);
p->start_sect = start;
+ p->alignment_offset = queue_sector_alignment_offset(disk->queue, start);
+ p->discard_alignment = queue_sector_discard_alignment(disk->queue,
+ start);
p->nr_sects = len;
p->partno = partno;
p->policy = get_disk_ro(disk);
pdev->devt = devt;
/* delay uevent until 'holders' subdir is created */
- pdev->uevent_suppress = 1;
+ dev_set_uevent_suppress(pdev, 1);
err = device_add(pdev);
if (err)
goto out_put;
if (!p->holder_dir)
goto out_del;
- pdev->uevent_suppress = 0;
+ dev_set_uevent_suppress(pdev, 0);
if (flags & ADDPART_FLAG_WHOLEDISK) {
err = device_create_file(pdev, &dev_attr_whole_disk);
if (err)
rcu_assign_pointer(ptbl->part[partno], p);
/* suppress uevent if the disk supresses it */
- if (!ddev->uevent_suppress)
+ if (!dev_get_uevent_suppress(ddev))
kobject_uevent(&pdev->kobj, KOBJ_ADD);
return p;
dev_set_name(ddev, disk->disk_name);
/* delay uevents, until we scanned partition table */
- ddev->uevent_suppress = 1;
+ dev_set_uevent_suppress(ddev, 1);
if (device_add(ddev))
return;
exit:
/* announce disk after possible partitions are created */
- ddev->uevent_suppress = 0;
+ dev_set_uevent_suppress(ddev, 0);
kobject_uevent(&ddev->kobj, KOBJ_ADD);
/* announce possible partitions */
/* add partitions */
for (p = 1; p < state->limit; p++) {
- sector_t size = state->parts[p].size;
- sector_t from = state->parts[p].from;
+ sector_t size, from;
+try_scan:
+ size = state->parts[p].size;
if (!size)
continue;
+
+ from = state->parts[p].from;
if (from >= get_capacity(disk)) {
printk(KERN_WARNING
"%s: p%d ignored, start %llu is behind the end of the disk\n",
disk->disk_name, p, (unsigned long long) from);
continue;
}
+
if (from + size > get_capacity(disk)) {
- /*
- * we can not ignore partitions of broken tables
- * created by for example camera firmware, but we
- * limit them to the end of the disk to avoid
- * creating invalid block devices
- */
+ const struct block_device_operations *bdops = disk->fops;
+ unsigned long long capacity;
+
printk(KERN_WARNING
- "%s: p%d size %llu limited to end of disk\n",
+ "%s: p%d size %llu exceeds device capacity, ",
disk->disk_name, p, (unsigned long long) size);
- size = get_capacity(disk) - from;
+
+ if (bdops->set_capacity &&
+ (disk->flags & GENHD_FL_NATIVE_CAPACITY) == 0) {
+ printk(KERN_CONT "enabling native capacity\n");
+ capacity = bdops->set_capacity(disk, ~0ULL);
+ disk->flags |= GENHD_FL_NATIVE_CAPACITY;
+ if (capacity > get_capacity(disk)) {
+ set_capacity(disk, capacity);
+ check_disk_size_change(disk, bdev);
+ bdev->bd_invalidated = 0;
+ }
+ goto try_scan;
+ } else {
+ /*
+ * we can not ignore partitions of broken tables
+ * created by for example camera firmware, but
+ * we limit them to the end of the disk to avoid
+ * creating invalid block devices
+ */
+ printk(KERN_CONT "limited to end of disk\n");
+ size = get_capacity(disk) - from;
+ }
}
part = add_partition(disk, p, from, size,
state->parts[p].flags);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff