[PATCH 20/45] block: refactor __blkdev_put

Christoph Hellwig
2020-11-28T22:12:05Z

Reorder the code to have one big section for the last close, and to use
bdev_is_partition.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Acked-by: Tejun Heo <tj@kernel.org>
---
fs/block_dev.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 962fabe8a67b83..6016777b648336 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1742,22 +1742,22 @@ static void __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part)
WARN_ON_ONCE(bdev->bd_holders);
sync_blockdev(bdev);
kill_bdev(bdev);
-
bdev_write_inode(bdev);
- }
- if (bdev->bd_contains == bdev) {
- if (disk->fops->release)
+
+ if (!bdev_is_partition(bdev) && disk->fops->release)
disk->fops->release(disk, mode);
- }
- if (!bdev->bd_openers) {
+
disk_put_part(bdev->bd_part);
bdev->bd_part = NULL;
bdev->bd_disk = NULL;
- if (bdev != bdev->bd_contains)
+ if (bdev_is_partition(bdev))
victim = bdev->bd_contains;
bdev->bd_contains = NULL;

put_disk_and_module(disk);
+ } else {
+ if (!bdev_is_partition(bdev) && disk->fops->release)
+ disk->fops->release(disk, mode);
}
mutex_unlock(&bdev->bd_mutex);
bdput(bdev);
--
2.29.2