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Merge branch 'for-linus' of git://neil.brown.name/md 

* 'for-linus' of git://neil.brown.name/md:
  md: fix deadlock when stopping arrays
This commit is contained in:
Linus Torvalds 2009-03-09 20:50:11 -07:00
parent 99adcd9d67 5fd3a17ed4
commit bad948ffee
1 changed files with 18 additions and 12 deletions
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30
drivers/md/md.c
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@ -214,12 +214,7 @@ static inline mddev_t *mddev_get(mddev_t *mddev)
return mddev;
}
static void mddev_delayed_delete(struct work_struct *ws)
{
mddev_t *mddev = container_of(ws, mddev_t, del_work);
kobject_del(&mddev->kobj);
kobject_put(&mddev->kobj);
}
static void mddev_delayed_delete(struct work_struct *ws);
static void mddev_put(mddev_t *mddev)
{
@ -3542,6 +3537,21 @@ static struct kobj_type md_ktype = {
int mdp_major = 0;
static void mddev_delayed_delete(struct work_struct *ws)
{
mddev_t *mddev = container_of(ws, mddev_t, del_work);
if (mddev->private == &md_redundancy_group) {
sysfs_remove_group(&mddev->kobj, &md_redundancy_group);
if (mddev->sysfs_action)
sysfs_put(mddev->sysfs_action);
mddev->sysfs_action = NULL;
mddev->private = NULL;
}
kobject_del(&mddev->kobj);
kobject_put(&mddev->kobj);
}
static int md_alloc(dev_t dev, char *name)
{
static DEFINE_MUTEX(disks_mutex);
@ -4033,13 +4043,9 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open)
mddev->queue->merge_bvec_fn = NULL;
mddev->queue->unplug_fn = NULL;
mddev->queue->backing_dev_info.congested_fn = NULL;
if (mddev->pers->sync_request) {
sysfs_remove_group(&mddev->kobj, &md_redundancy_group);
if (mddev->sysfs_action)
sysfs_put(mddev->sysfs_action);
mddev->sysfs_action = NULL;
}
module_put(mddev->pers->owner);
if (mddev->pers->sync_request)
mddev->private = &md_redundancy_group;
mddev->pers = NULL;
/* tell userspace to handle 'inactive' */
sysfs_notify_dirent(mddev->sysfs_state);