Pass the read-only flag to set_device_ro, so that it will be
visible to the block layer and in sysfs.
Cc: <nbd-gene...@lists.sf.net>
Cc: Paul Clements <paul.cleme...@steeleye.com>
Cc: Andrew Morton <a...@linux-foundation.org>
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
drivers/block/nbd.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index a9c5c7a..ef17c2e 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -703,6 +703,8 @@ static int __nbd_ioctl(struct block_device *bdev, struct
nbd_device *nbd,
mutex_unlock(&nbd->tx_lock);
+ if (nbd->flags & NBD_FLAG_READ_ONLY)
+ set_device_ro(bdev, true);
if (nbd->flags & NBD_FLAG_SEND_TRIM)
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD,
nbd->disk->queue);
@@ -730,6 +732,7 @@ static int __nbd_ioctl(struct block_device *bdev, struct
nbd_device *nbd,
dev_warn(disk_to_dev(nbd->disk), "queue cleared\n");
kill_bdev(bdev);
queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, nbd->disk->queue);
+ set_device_ro(bdev, false);
if (file)
fput(file);
nbd->flags = 0;
--
1.7.1
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