block: pass a block_device to invalidate_partition

Pass the block_device actually needed instead of looking it up using
bdget_disk.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/block/genhd.c b/block/genhd.c
index fd63333..452f7c6 100644 (file)
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -803,14 +803,8 @@ void device_add_disk_no_queue_reg(struct device *parent, struct gendisk *disk)
 }
 EXPORT_SYMBOL(device_add_disk_no_queue_reg);
 
-static void invalidate_partition(struct gendisk *disk, int partno)
+static void invalidate_partition(struct block_device *bdev)
 {
-       struct block_device *bdev;
-
-       bdev = bdget_disk(disk, partno);
-       if (!bdev)
-               return;
-
        fsync_bdev(bdev);
        __invalidate_device(bdev, true);
 
@@ -819,7 +813,6 @@ static void invalidate_partition(struct gendisk *disk, int partno)
         * up any more even if openers still hold references to it.
         */
        remove_inode_hash(bdev->bd_inode);
-       bdput(bdev);
 }
 
 /**
@@ -864,12 +857,12 @@ void del_gendisk(struct gendisk *disk)
        disk_part_iter_init(&piter, disk,
                             DISK_PITER_INCL_EMPTY | DISK_PITER_REVERSE);
        while ((part = disk_part_iter_next(&piter))) {
-               invalidate_partition(disk, part->bdev->bd_partno);
+               invalidate_partition(part->bdev);
                delete_partition(part);
        }
        disk_part_iter_exit(&piter);
 
-       invalidate_partition(disk, 0);
+       invalidate_partition(disk->part0);
        set_capacity(disk, 0);
        disk->flags &= ~GENHD_FL_UP;
        up_write(&bdev_lookup_sem);