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| author |   Doron Roberts-Kedes <doronrk@fb.com> | 2018-06-15 14:05:32 -0700 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2018-06-20 19:10:06 -0600 |
| commit | 08ba91ee6e2c1c08d3f0648f978cbb5dbf3491d8 (patch) | |
| tree | 2c50d118291ce0b1a2c0a9f58f97f7defab7a33c /include/uapi/linux/nbd.h | |
| parent | block: sed-opal: Fix a couple off by one bugs (diff) | |
| download | linux-dev-08ba91ee6e2c1c08d3f0648f978cbb5dbf3491d8.tar.xz linux-dev-08ba91ee6e2c1c08d3f0648f978cbb5dbf3491d8.zip | |
nbd: Add the nbd NBD_DISCONNECT_ON_CLOSE config flag.
If NBD_DISCONNECT_ON_CLOSE is set on a device, then the driver will
issue a disconnect from nbd_release if the device has no remaining
bdev->bd_openers.
Fix ret val so reconfigure with only setting the flag succeeds.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Doron Roberts-Kedes <doronrk@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to '')
| -rw-r--r-- | include/uapi/linux/nbd.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/uapi/linux/nbd.h b/include/uapi/linux/nbd.h index 85a3fb65e40a..20d6cc91435d 100644 --- a/include/uapi/linux/nbd.h +++ b/include/uapi/linux/nbd.h @@ -53,6 +53,9 @@ enum { /* These are client behavior specific flags. */ #define NBD_CFLAG_DESTROY_ON_DISCONNECT (1 << 0) /* delete the nbd device on disconnect. */ +#define NBD_CFLAG_DISCONNECT_ON_CLOSE (1 << 1) /* disconnect the nbd device on + * close by last opener. + */ /* userspace doesn't need the nbd_device structure */ |