From: Jan Kara jack@suse.cz
commit 731dc4868311ee097757b8746eaa1b4f8b2b4f1c upstream.
Factor out code handling revalidation of bdev on disk change into a common helper.
Signed-off-by: Jan Kara jack@suse.cz Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- fs/block_dev.c | 26 ++++++++++++++------------ 1 file changed, 14 insertions(+), 12 deletions(-)
--- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1430,6 +1430,14 @@ EXPORT_SYMBOL(bd_set_size);
static void __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part);
+static void bdev_disk_changed(struct block_device *bdev, bool invalidate) +{ + if (invalidate) + invalidate_partitions(bdev->bd_disk, bdev); + else + rescan_partitions(bdev->bd_disk, bdev); +} + /* * bd_mutex locking: * @@ -1512,12 +1520,9 @@ static int __blkdev_get(struct block_dev * The latter is necessary to prevent ghost * partitions on a removed medium. */ - if (bdev->bd_invalidated) { - if (!ret) - rescan_partitions(disk, bdev); - else if (ret == -ENOMEDIUM) - invalidate_partitions(disk, bdev); - } + if (bdev->bd_invalidated && + (!ret || ret == -ENOMEDIUM)) + bdev_disk_changed(bdev, ret == -ENOMEDIUM);
if (ret) goto out_clear; @@ -1550,12 +1555,9 @@ static int __blkdev_get(struct block_dev if (bdev->bd_disk->fops->open) ret = bdev->bd_disk->fops->open(bdev, mode); /* the same as first opener case, read comment there */ - if (bdev->bd_invalidated) { - if (!ret) - rescan_partitions(bdev->bd_disk, bdev); - else if (ret == -ENOMEDIUM) - invalidate_partitions(bdev->bd_disk, bdev); - } + if (bdev->bd_invalidated && + (!ret || ret == -ENOMEDIUM)) + bdev_disk_changed(bdev, ret == -ENOMEDIUM); if (ret) goto out_unlock_bdev; }