diff options
| author | Tang Junhui <tang.junhui.linux@gmail.com> | 2018-10-08 15:41:10 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-11-13 22:08:15 +0300 |
| commit | 32870e2bb60041867764cc85634c0d9023040e35 (patch) | |
| tree | 4e31a02a3187f4721ca071a58f236fb785afde11 /drivers/md/bcache/request.c | |
| parent | fec039ec69c8e1ba4ba6a4bc040e45d2ea5a6dfe (diff) | |
| download | linux-32870e2bb60041867764cc85634c0d9023040e35.tar.xz | |
bcache: fix ioctl in flash device
commit dd0c91793b7c2658ea32c6b3a2247a8ceca45dc0 upstream.
When doing ioctl in flash device, it will call ioctl_dev() in super.c,
then we should not to get cached device since flash only device has
no backend device. This patch just move the jugement dc->io_disable
to cached_dev_ioctl() to make ioctl in flash device correctly.
Fixes: 0f0709e6bfc3c ("bcache: stop bcache device when backing device is offline")
Signed-off-by: Tang Junhui <tang.junhui.linux@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/md/bcache/request.c')
| -rw-r--r-- | drivers/md/bcache/request.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c index 4946d486f734..22944aa7d8e5 100644 --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -1218,6 +1218,9 @@ static int cached_dev_ioctl(struct bcache_device *d, fmode_t mode, { struct cached_dev *dc = container_of(d, struct cached_dev, disk); + if (dc->io_disable) + return -EIO; + return __blkdev_driver_ioctl(dc->bdev, mode, cmd, arg); } |