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block: move the NEED_PART_SCAN flag to struct gendisk

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We can only scan for partitions on the whole disk, so move the flag
from struct block_device to struct gendisk.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
2020-09-21 09:19:45 +02:00
committed by Jens Axboe
parent 07d098e6bb
commit 38430f0876
6 changed files with 13 additions and 14 deletions
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7
fs/block_dev.c
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@@ -910,7 +910,6 @@ struct block_device *bdget(dev_t dev)
bdev->bd_super = NULL;
bdev->bd_inode = inode;
bdev->bd_part_count = 0;
bdev->bd_flags = 0;
inode->i_mode = S_IFBLK;
inode->i_rdev = dev;
inode->i_bdev = bdev;
@@ -1385,7 +1384,7 @@ int bdev_disk_changed(struct block_device *bdev, bool invalidate)
lockdep_assert_held(&bdev->bd_mutex);
clear_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags);
clear_bit(GD_NEED_PART_SCAN, &bdev->bd_disk->state);
rescan:
ret = blk_drop_partitions(bdev);
@@ -1509,7 +1508,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, void *holder,
* The latter is necessary to prevent ghost
* partitions on a removed medium.
*/
if (test_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags) &&
if (test_bit(GD_NEED_PART_SCAN, &disk->state) &&
(!ret || ret == -ENOMEDIUM))
bdev_disk_changed(bdev, ret == -ENOMEDIUM);
@@ -1539,7 +1538,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, void *holder,
if (bdev->bd_disk->fops->open)
ret = bdev->bd_disk->fops->open(bdev, mode);
/* the same as first opener case, read comment there */
if (test_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags) &&
if (test_bit(GD_NEED_PART_SCAN, &disk->state) &&
(!ret || ret == -ENOMEDIUM))
bdev_disk_changed(bdev, ret == -ENOMEDIUM);
if (ret)