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block: kill GENHD_FL_FAIL and use part0->make_it_fail

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GENHD_FL_FAIL for disk is what make_it_fail is for parts.  Kill it and
use part0->make_it_fail.  Sysfs node handling is unified too.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Tejun Heo 2008-08-25 19:56:13 +09:00 committed by Jens Axboe
parent 0762b8bde9
commit eddb2e26b5
4 changed files with 16 additions and 37 deletions
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5
block/blk-core.c
View File

@ -1273,8 +1273,9 @@ __setup("fail_make_request=", setup_fail_make_request);
static int should_fail_request(struct bio *bio)
{
if ((bio->bi_bdev->bd_disk->flags & GENHD_FL_FAIL) ||
bio->bi_bdev->bd_part->make_it_fail)
struct hd_struct *part = bio->bi_bdev->bd_part;
if (part_to_disk(part)->part0.make_it_fail || part->make_it_fail)
return should_fail(&fail_make_request, bio->bi_size);
return 0;

30
block/genhd.c
View File

@ -795,34 +795,6 @@ static ssize_t disk_stat_show(struct device *dev,
jiffies_to_msecs(disk_stat_read(disk, time_in_queue)));
}
#ifdef CONFIG_FAIL_MAKE_REQUEST
static ssize_t disk_fail_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct gendisk *disk = dev_to_disk(dev);
return sprintf(buf, "%d\n", disk->flags & GENHD_FL_FAIL ? 1 : 0);
}
static ssize_t disk_fail_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct gendisk *disk = dev_to_disk(dev);
int i;
if (count > 0 && sscanf(buf, "%d", &i) > 0) {
if (i == 0)
disk->flags &= ~GENHD_FL_FAIL;
else
disk->flags |= GENHD_FL_FAIL;
}
return count;
}
#endif
static DEVICE_ATTR(range, S_IRUGO, disk_range_show, NULL);
static DEVICE_ATTR(ext_range, S_IRUGO, disk_ext_range_show, NULL);
static DEVICE_ATTR(removable, S_IRUGO, disk_removable_show, NULL);
@ -832,7 +804,7 @@ static DEVICE_ATTR(capability, S_IRUGO, disk_capability_show, NULL);
static DEVICE_ATTR(stat, S_IRUGO, disk_stat_show, NULL);
#ifdef CONFIG_FAIL_MAKE_REQUEST
static struct device_attribute dev_attr_fail =
__ATTR(make-it-fail, S_IRUGO|S_IWUSR, disk_fail_show, disk_fail_store);
__ATTR(make-it-fail, S_IRUGO|S_IWUSR, part_fail_show, part_fail_store);
#endif
static struct attribute *disk_attrs[] = {

10
fs/partitions/check.c
View File

@ -238,17 +238,17 @@ static ssize_t part_stat_show(struct device *dev,
}
#ifdef CONFIG_FAIL_MAKE_REQUEST
static ssize_t part_fail_show(struct device *dev,
struct device_attribute *attr, char *buf)
ssize_t part_fail_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hd_struct *p = dev_to_part(dev);
return sprintf(buf, "%d\n", p->make_it_fail);
}
static ssize_t part_fail_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
ssize_t part_fail_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct hd_struct *p = dev_to_part(dev);
int i;

8
include/linux/genhd.h
View File

@ -112,7 +112,6 @@ struct hd_struct {
#define GENHD_FL_CD 8
#define GENHD_FL_UP 16
#define GENHD_FL_SUPPRESS_PARTITION_INFO 32
#define GENHD_FL_FAIL 64
struct gendisk {
/* major, first_minor, minors and ext_minors are input
@ -596,6 +595,13 @@ extern void blk_unregister_region(dev_t devt, unsigned long range);
extern ssize_t part_size_show(struct device *dev,
struct device_attribute *attr, char *buf);
#ifdef CONFIG_FAIL_MAKE_REQUEST
extern ssize_t part_fail_show(struct device *dev,
struct device_attribute *attr, char *buf);
extern ssize_t part_fail_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count);
#endif /* CONFIG_FAIL_MAKE_REQUEST */
#else /* CONFIG_BLOCK */