diff mbox

nbd: update size when connected

Message ID 20180312160018.30896-1-josef@toxicpanda.com (mailing list archive)
State New, archived
Headers show

Commit Message

Josef Bacik March 12, 2018, 4 p.m. UTC 
From: Josef Bacik <jbacik@fb.com>

I messed up changing the size of an NBD device while it was connected by
not actually updating the device or doing the uevent.  Fix this by
updating everything if we're connected and we change the size.

cc: stable@vger.kernel.org
Fixes: 639812a ("nbd: don't set the device size until we're connected")
Signed-off-by: Josef Bacik <jbacik@fb.com>
---
 drivers/block/nbd.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 86258b00a1d4..7106b98a35fb 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -243,6 +243,8 @@  static void nbd_size_set(struct nbd_device *nbd, loff_t blocksize,
 	struct nbd_config *config = nbd->config;
 	config->blksize = blocksize;
 	config->bytesize = blocksize * nr_blocks;
+	if (nbd->task_recv != NULL)
+		nbd_size_update(nbd);
 }
 
 static void nbd_complete_rq(struct request *req)