block: partition: introduce hd_free_part()

So the helper can be used in both generic partition
case and part0 case.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/block/genhd.c b/block/genhd.c
index 59a1395..85df452 100644 (file)
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -1110,8 +1110,7 @@ static void disk_release(struct device *dev)
        disk_release_events(disk);
        kfree(disk->random);
        disk_replace_part_tbl(disk, NULL);
-       free_part_stats(&disk->part0);
-       free_part_info(&disk->part0);
+       hd_free_part(&disk->part0);
        if (disk->queue)
                blk_put_queue(disk->queue);
        kfree(disk);

diff --git a/block/partition-generic.c b/block/partition-generic.c
index 0d9e5f9..eca0d02 100644 (file)
--- a/block/partition-generic.c
+++ b/block/partition-generic.c
@@ -212,8 +212,7 @@ static void part_release(struct device *dev)
 {
        struct hd_struct *p = dev_to_part(dev);
        blk_free_devt(dev->devt);
-       free_part_stats(p);
-       free_part_info(p);
+       hd_free_part(p);
        kfree(p);
 }
 

diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index ec274e0..a221220 100644 (file)
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -663,6 +663,12 @@ static inline void hd_struct_put(struct hd_struct *part)
                __delete_partition(part);
 }
 
+static inline void hd_free_part(struct hd_struct *part)
+{
+       free_part_stats(part);
+       free_part_info(part);
+}
+
 /*
  * Any access of part->nr_sects which is not protected by partition
  * bd_mutex or gendisk bdev bd_mutex, should be done using this