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authorMatias Bjørling <m@bjorling.me>2016-05-06 21:03:17 +0300
committerJens Axboe <axboe@fb.com>2016-05-06 21:51:10 +0300
commit976bdfcae32ea10c2c8c2ecaeb0d85873f634dad (patch)
tree479ceab3d7330f9acd8d64353ed2c238311171c1 /drivers/lightnvm
parent45bbd0529e5d50aa91a4bb5fffffc5e24df3ef7e (diff)
downloadlinux-976bdfcae32ea10c2c8c2ecaeb0d85873f634dad.tar.xz
lightnvm: remove mgt targets on mgt removal
Targets associated with a device manager are not freed on device removal. They have to be manually removed before shutdown. Make sure any outstanding targets are freed upon shutdown. Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/lightnvm')
-rw-r--r--drivers/lightnvm/core.c69
1 files changed, 43 insertions, 26 deletions
diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index 1873a3bc913d..d3af77102e47 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -596,13 +596,52 @@ err_fmtype:
return ret;
}
+static void nvm_remove_target(struct nvm_target *t)
+{
+ struct nvm_tgt_type *tt = t->type;
+ struct gendisk *tdisk = t->disk;
+ struct request_queue *q = tdisk->queue;
+
+ lockdep_assert_held(&nvm_lock);
+
+ del_gendisk(tdisk);
+ blk_cleanup_queue(q);
+
+ if (tt->exit)
+ tt->exit(tdisk->private_data);
+
+ put_disk(tdisk);
+
+ list_del(&t->list);
+ kfree(t);
+}
+
+static void nvm_free_mgr(struct nvm_dev *dev)
+{
+ struct nvm_target *tgt, *tmp;
+
+ if (!dev->mt)
+ return;
+
+ down_write(&nvm_lock);
+ list_for_each_entry_safe(tgt, tmp, &nvm_targets, list) {
+ if (tgt->dev != dev)
+ continue;
+
+ nvm_remove_target(tgt);
+ }
+ up_write(&nvm_lock);
+
+ dev->mt->unregister_mgr(dev);
+ dev->mt = NULL;
+}
+
static void nvm_free(struct nvm_dev *dev)
{
if (!dev)
return;
- if (dev->mt)
- dev->mt->unregister_mgr(dev);
+ nvm_free_mgr(dev);
kfree(dev->lptbl);
kfree(dev->lun_map);
@@ -808,6 +847,7 @@ static int nvm_create_target(struct nvm_dev *dev,
t->type = tt;
t->disk = tdisk;
+ t->dev = dev;
down_write(&nvm_lock);
list_add_tail(&t->list, &nvm_targets);
@@ -823,26 +863,6 @@ err_t:
return -ENOMEM;
}
-static void nvm_remove_target(struct nvm_target *t)
-{
- struct nvm_tgt_type *tt = t->type;
- struct gendisk *tdisk = t->disk;
- struct request_queue *q = tdisk->queue;
-
- lockdep_assert_held(&nvm_lock);
-
- del_gendisk(tdisk);
- blk_cleanup_queue(q);
-
- if (tt->exit)
- tt->exit(tdisk->private_data);
-
- put_disk(tdisk);
-
- list_del(&t->list);
- kfree(t);
-}
-
static int __nvm_configure_create(struct nvm_ioctl_create *create)
{
struct nvm_dev *dev;
@@ -1231,10 +1251,7 @@ static long nvm_ioctl_dev_factory(struct file *file, void __user *arg)
return -EINVAL;
}
- if (dev->mt) {
- dev->mt->unregister_mgr(dev);
- dev->mt = NULL;
- }
+ nvm_free_mgr(dev);
if (dev->identity.cap & NVM_ID_DCAP_BBLKMGMT)
return nvm_dev_factory(dev, fact.flags);