From aea39223667868c77936546004b84716a623a438 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Mon, 21 Oct 2019 10:37:59 +0200 Subject: [PATCH 1/2] bdev: Factor out bdev revalidation into a common helper Factor out code handling revalidation of bdev on disk change into a common helper. Signed-off-by: Jan Kara Signed-off-by: Jens Axboe --- fs/block_dev.c | 26 ++++++++++++++------------ 1 file changed, 14 insertions(+), 12 deletions(-) diff --git a/fs/block_dev.c b/fs/block_dev.c index 9c073dbdc1b0..88c6d35ec71d 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1512,6 +1512,14 @@ 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: * @@ -1594,12 +1602,9 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) * 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; @@ -1632,12 +1637,9 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) 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; } -- 2.21.0