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md: remove ->changed and related code.

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We set ->changed to 1 and call check_disk_change at the end
of md_open so that bd_invalidated would be set and thus
partition rescan would happen appropriately.

Now that we call revalidate_disk directly, which sets bd_invalidates,
that indirection is no longer needed and can be removed.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2010-03-29 11:18:15 +11:00
parent 49ce6cea85
commit b821eaa572
4 changed files with 1 additions and 25 deletions
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22
drivers/md/md.c
View File

@ -4501,7 +4501,6 @@ static int do_md_run(mddev_t * mddev)
md_wakeup_thread(mddev->sync_thread); /* possibly kick off a reshape */
revalidate_disk(mddev->gendisk);
mddev->changed = 1;
md_new_event(mddev);
sysfs_notify_dirent(mddev->sysfs_state);
if (mddev->sysfs_action)
@ -4620,7 +4619,7 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open)
}
set_capacity(disk, 0);
mddev->changed = 1;
revalidate_disk(disk);
if (mddev->ro)
mddev->ro = 0;
@ -4686,7 +4685,6 @@ out:
mddev->sync_speed_min = mddev->sync_speed_max = 0;
mddev->recovery = 0;
mddev->in_sync = 0;
mddev->changed = 0;
mddev->degraded = 0;
mddev->barriers_work = 0;
mddev->safemode = 0;
@ -5850,7 +5848,6 @@ static int md_open(struct block_device *bdev, fmode_t mode)
atomic_inc(&mddev->openers);
mutex_unlock(&mddev->open_mutex);
check_disk_change(bdev);
out:
return err;
}
@ -5865,21 +5862,6 @@ static int md_release(struct gendisk *disk, fmode_t mode)
return 0;
}
static int md_media_changed(struct gendisk *disk)
{
mddev_t *mddev = disk->private_data;
return mddev->changed;
}
static int md_revalidate(struct gendisk *disk)
{
mddev_t *mddev = disk->private_data;
mddev->changed = 0;
return 0;
}
static const struct block_device_operations md_fops =
{
.owner = THIS_MODULE,
@ -5890,8 +5872,6 @@ static const struct block_device_operations md_fops =
.compat_ioctl = md_compat_ioctl,
#endif
.getgeo = md_getgeo,
.media_changed = md_media_changed,
.revalidate_disk= md_revalidate,
};
static int md_thread(void * arg)

1
drivers/md/md.h
View File

@ -237,7 +237,6 @@ struct mddev_s
atomic_t active; /* general refcount */
atomic_t openers; /* number of active opens */
int changed; /* true if we might need to reread partition info */
int degraded; /* whether md should consider
* adding a spare
*/

1
drivers/md/raid1.c
View File

@ -2184,7 +2184,6 @@ static int raid1_resize(mddev_t *mddev, sector_t sectors)
if (mddev->array_sectors > raid1_size(mddev, sectors, 0))
return -EINVAL;
set_capacity(mddev->gendisk, mddev->array_sectors);
mddev->changed = 1;
revalidate_disk(mddev->gendisk);
if (sectors > mddev->dev_sectors &&
mddev->recovery_cp == MaxSector) {

2
drivers/md/raid5.c
View File

@ -5335,7 +5335,6 @@ static int raid5_resize(mddev_t *mddev, sector_t sectors)
raid5_size(mddev, sectors, mddev->raid_disks))
return -EINVAL;
set_capacity(mddev->gendisk, mddev->array_sectors);
mddev->changed = 1;
revalidate_disk(mddev->gendisk);
if (sectors > mddev->dev_sectors && mddev->recovery_cp == MaxSector) {
mddev->recovery_cp = mddev->dev_sectors;
@ -5549,7 +5548,6 @@ static void raid5_finish_reshape(mddev_t *mddev)
if (mddev->delta_disks > 0) {
md_set_array_sectors(mddev, raid5_size(mddev, 0, 0));
set_capacity(mddev->gendisk, mddev->array_sectors);
mddev->changed = 1;
revalidate_disk(mddev->gendisk);
} else {
int d;