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| author | Josh Triplett <josh@joshtriplett.org> | 2020-12-17 00:58:47 -0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-12-17 07:54:51 -0700 |
| commit | 1aba169e770911fb2afa63eb859883c4de2191e3 (patch) | |
| tree | 47667f78d1afad25b8102b0871083489bc867e4d /drivers/block | |
| parent | 9aaf9a2aba0c2b5f0fc6dfeb011f0b4c8e224a73 (diff) | |
| download | lwn-1aba169e770911fb2afa63eb859883c4de2191e3.tar.gz lwn-1aba169e770911fb2afa63eb859883c4de2191e3.zip | |
nbd: Respect max_part for all partition scans
The creation path of the NBD device respects max_part and only scans for
partitions if max_part is not 0. However, some other code paths ignore
max_part, and unconditionally scan for partitions. Add a check for
max_part on each partition scan.
Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/nbd.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 92f84ed0ba9e..6727358e147d 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -318,7 +318,8 @@ static int nbd_set_size(struct nbd_device *nbd, loff_t bytesize, blk_queue_logical_block_size(nbd->disk->queue, blksize); blk_queue_physical_block_size(nbd->disk->queue, blksize); - set_bit(GD_NEED_PART_SCAN, &nbd->disk->state); + if (max_part) + set_bit(GD_NEED_PART_SCAN, &nbd->disk->state); if (!set_capacity_and_notify(nbd->disk, bytesize >> 9)) kobject_uevent(&nbd_to_dev(nbd)->kobj, KOBJ_CHANGE); return 0; @@ -1476,9 +1477,11 @@ static int nbd_open(struct block_device *bdev, fmode_t mode) refcount_set(&nbd->config_refs, 1); refcount_inc(&nbd->refs); mutex_unlock(&nbd->config_lock); - set_bit(GD_NEED_PART_SCAN, &bdev->bd_disk->state); + if (max_part) + set_bit(GD_NEED_PART_SCAN, &bdev->bd_disk->state); } else if (nbd_disconnected(nbd->config)) { - set_bit(GD_NEED_PART_SCAN, &bdev->bd_disk->state); + if (max_part) + set_bit(GD_NEED_PART_SCAN, &bdev->bd_disk->state); } out: mutex_unlock(&nbd_index_mutex); |