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authorChristoph Hellwig <hch@lst.de>2019-11-14 17:34:35 +0300
committerJens Axboe <axboe@kernel.dk>2019-11-14 17:43:53 +0300
commit142fe8f4bb169e8632024d51c64653a8bf140561 (patch)
tree8869801776302654d3442fd763bcde51afc74a32 /block
parenta1548b674403c0de70cc29a1575689917ba60157 (diff)
downloadlinux-142fe8f4bb169e8632024d51c64653a8bf140561.tar.xz
block: fix bdev_disk_changed for non-partitioned devices
We still have to set the capacity to 0 if invalidating or call revalidate_disk if not even if the disk has no partitions. Fix that by merging rescan_partitions into bdev_disk_changed and just stubbing out blk_add_partitions and blk_drop_partitions for non-partitioned devices. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
-rw-r--r--block/ioctl.c6
-rw-r--r--block/partition-generic.c5
2 files changed, 7 insertions, 4 deletions
diff --git a/block/ioctl.c b/block/ioctl.c
index f6576a6d5778..5ccd9f016594 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -162,16 +162,14 @@ static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user
*/
int __blkdev_reread_part(struct block_device *bdev)
{
- struct gendisk *disk = bdev->bd_disk;
-
- if (!disk_part_scan_enabled(disk) || bdev != bdev->bd_contains)
+ if (!disk_part_scan_enabled(bdev->bd_disk) || bdev != bdev->bd_contains)
return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
lockdep_assert_held(&bdev->bd_mutex);
- return rescan_partitions(disk, bdev, false);
+ return bdev_disk_changed(bdev, false);
}
EXPORT_SYMBOL(__blkdev_reread_part);
diff --git a/block/partition-generic.c b/block/partition-generic.c
index 2cbc23f6032c..61487421a319 100644
--- a/block/partition-generic.c
+++ b/block/partition-generic.c
@@ -445,6 +445,8 @@ int blk_drop_partitions(struct gendisk *disk, struct block_device *bdev)
struct hd_struct *part;
int res;
+ if (!disk_part_scan_enabled(disk))
+ return 0;
if (bdev->bd_part_count || bdev->bd_super)
return -EBUSY;
res = invalidate_partition(disk, 0);
@@ -514,6 +516,9 @@ int blk_add_partitions(struct gendisk *disk, struct block_device *bdev)
struct parsed_partitions *state;
int ret = -EAGAIN, p, highest;
+ if (!disk_part_scan_enabled(disk))
+ return 0;
+
state = check_partition(disk, bdev);
if (!state)
return 0;