This is a note to let you know that I've just added the patch titled
nbd: use the correct block_device in nbd_bdev_reset
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
nbd-use-the-correct-block_device-in-nbd_bdev_reset.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f022ff9b48467b05cf4b294a6bd75d036ae13486
Author: Christoph Hellwig <hch@xxxxxx>
Date: Wed Mar 30 07:29:03 2022 +0200
nbd: use the correct block_device in nbd_bdev_reset
[ Upstream commit 2a852a693f8839bb877fc731ffbc9ece3a9c16d7 ]
The bdev parameter to ->ioctl contains the block device that the ioctl
is called on, which can be the partition. But the openers check in
nbd_bdev_reset really needs to check use the whole device, so switch to
using that.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Jan Kara <jack@xxxxxxx>
Link: https://lore.kernel.org/r/20220330052917.2566582-2-hch@xxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Stable-dep-of: e5cfefa97bcc ("block: fix scan partition for exclusively open device again")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index c1ef1df42eb66..ade8b839e4458 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -1167,11 +1167,11 @@ static int nbd_reconnect_socket(struct nbd_device *nbd, unsigned long arg)
return -ENOSPC;
}
-static void nbd_bdev_reset(struct block_device *bdev)
+static void nbd_bdev_reset(struct nbd_device *nbd)
{
- if (bdev->bd_openers > 1)
+ if (nbd->disk->part0->bd_openers > 1)
return;
- set_capacity(bdev->bd_disk, 0);
+ set_capacity(nbd->disk, 0);
}
static void nbd_parse_flags(struct nbd_device *nbd)
@@ -1337,7 +1337,7 @@ static int nbd_start_device(struct nbd_device *nbd)
return nbd_set_size(nbd, config->bytesize, nbd_blksize(config));
}
-static int nbd_start_device_ioctl(struct nbd_device *nbd, struct block_device *bdev)
+static int nbd_start_device_ioctl(struct nbd_device *nbd)
{
struct nbd_config *config = nbd->config;
int ret;
@@ -1358,7 +1358,7 @@ static int nbd_start_device_ioctl(struct nbd_device *nbd, struct block_device *b
flush_workqueue(nbd->recv_workq);
mutex_lock(&nbd->config_lock);
- nbd_bdev_reset(bdev);
+ nbd_bdev_reset(nbd);
/* user requested, ignore socket errors */
if (test_bit(NBD_RT_DISCONNECT_REQUESTED, &config->runtime_flags))
ret = 0;
@@ -1372,7 +1372,7 @@ static void nbd_clear_sock_ioctl(struct nbd_device *nbd,
{
nbd_clear_sock(nbd);
__invalidate_device(bdev, true);
- nbd_bdev_reset(bdev);
+ nbd_bdev_reset(nbd);
if (test_and_clear_bit(NBD_RT_HAS_CONFIG_REF,
&nbd->config->runtime_flags))
nbd_config_put(nbd);
@@ -1418,7 +1418,7 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
config->flags = arg;
return 0;
case NBD_DO_IT:
- return nbd_start_device_ioctl(nbd, bdev);
+ return nbd_start_device_ioctl(nbd);
case NBD_CLEAR_QUE:
/*
* This is for compatibility only. The queue is always cleared
