[PATCH] bdev: fix ->bd_part_count leak

Don't leak a ->bd_part_count when the partition open fails with -ENXIO.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 846f32d..f3c3a44 100644 (file)
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -902,6 +902,7 @@ EXPORT_SYMBOL(bd_set_size);
 
 static int __blkdev_get(struct block_device *bdev, mode_t mode, unsigned flags,
                        int for_part);
+static int __blkdev_put(struct block_device *bdev, int for_part);
 
 static int do_open(struct block_device *bdev, struct file *file, int for_part)
 {
@@ -987,7 +988,7 @@ out_first:
        bdev->bd_disk = NULL;
        bdev->bd_inode->i_data.backing_dev_info = &default_backing_dev_info;
        if (bdev != bdev->bd_contains)
-               blkdev_put(bdev->bd_contains);
+               __blkdev_put(bdev->bd_contains, 1);
        bdev->bd_contains = NULL;
        put_disk(disk);
        module_put(owner);