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| author | Christoph Hellwig <hch@lst.de> | 2021-04-21 18:05:02 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-04-21 10:49:37 -0600 |
| commit | 68e6582e8f2dc32fd2458b9926564faa1fb4560e (patch) | |
| tree | 3cc6a5e8e60a81f969cb33215d221328a3483a57 /block | |
| parent | f06c609645ecd043c79380fac94145926603fb33 (diff) | |
| download | lwn-68e6582e8f2dc32fd2458b9926564faa1fb4560e.tar.gz lwn-68e6582e8f2dc32fd2458b9926564faa1fb4560e.zip | |
block: return -EBUSY when there are open partitions in blkdev_reread_part
The switch to go through blkdev_get_by_dev means we now ignore the
return value from bdev_disk_changed in __blkdev_get. Add a manual
check to restore the old semantics.
Fixes: 4601b4b130de ("block: reopen the device in blkdev_reread_part")
Reported-by: Karel Zak <kzak@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210421160502.447418-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/ioctl.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/block/ioctl.c b/block/ioctl.c index ff241e663c01..8ba1ed8defd0 100644 --- a/block/ioctl.c +++ b/block/ioctl.c @@ -89,6 +89,8 @@ static int blkdev_reread_part(struct block_device *bdev, fmode_t mode) return -EINVAL; if (!capable(CAP_SYS_ADMIN)) return -EACCES; + if (bdev->bd_part_count) + return -EBUSY; /* * Reopen the device to revalidate the driver state and force a |