diff options
| -rw-r--r-- | drivers/target/target_core_user.c | 24 |
1 files changed, 8 insertions, 16 deletions
diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index 6bcaa8b5684c..d9fd91ee8282 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -1302,21 +1302,19 @@ static int tcmu_check_and_free_pending_cmd(struct tcmu_cmd *cmd) return -EINVAL; } -static void tcmu_blocks_release(struct tcmu_dev *udev) +static void tcmu_blocks_release(struct radix_tree_root *blocks, + int start, int end) { int i; struct page *page; - /* Try to release all block pages */ - mutex_lock(&udev->cmdr_lock); - for (i = 0; i <= udev->dbi_max; i++) { - page = radix_tree_delete(&udev->data_blocks, i); + for (i = start; i < end; i++) { + page = radix_tree_delete(blocks, i); if (page) { __free_page(page); atomic_dec(&global_db_count); } } - mutex_unlock(&udev->cmdr_lock); } static void tcmu_dev_kref_release(struct kref *kref) @@ -1340,7 +1338,9 @@ static void tcmu_dev_kref_release(struct kref *kref) spin_unlock_irq(&udev->commands_lock); WARN_ON(!all_expired); - tcmu_blocks_release(udev); + mutex_lock(&udev->cmdr_lock); + tcmu_blocks_release(&udev->data_blocks, 0, udev->dbi_max + 1); + mutex_unlock(&udev->cmdr_lock); call_rcu(&dev->rcu_head, tcmu_dev_call_rcu); } @@ -1978,8 +1978,6 @@ static int unmap_thread_fn(void *data) struct tcmu_dev *udev; loff_t off; uint32_t start, end, block; - struct page *page; - int i; while (!kthread_should_stop()) { DEFINE_WAIT(__wait); @@ -2027,13 +2025,7 @@ static int unmap_thread_fn(void *data) unmap_mapping_range(udev->inode->i_mapping, off, 0, 1); /* Release the block pages */ - for (i = start; i < end; i++) { - page = radix_tree_delete(&udev->data_blocks, i); - if (page) { - __free_page(page); - atomic_dec(&global_db_count); - } - } + tcmu_blocks_release(&udev->data_blocks, start, end); mutex_unlock(&udev->cmdr_lock); } |