diff options
| author | Robert Altnoeder <robert.altnoeder@linbit.com> | 2023-01-13 13:35:32 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-01-29 15:18:33 -0700 |
| commit | 2167879655b3a9a0a970d50b202e45f7fc45d092 (patch) | |
| tree | c8f927adbac5d85a5a79c8791dfb47dda60b1f87 /include/linux/drbd_limits.h | |
| parent | 37800068673220326fcdf7f40ccf05ca54854585 (diff) | |
drbd: fix DRBD_VOLUME_MAX 65535 -> 65534
The protocol uses -1 as a reserved value for
'no specific volume', and since the protocol field
is a 16 bit unsigned value, -1 is converted to
65535. Therefore, limit the range of valid volume
numbers to [0, 65534].
Signed-off-by: Robert Altnoeder <robert.altnoeder@linbit.com>
Signed-off-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
Reviewed-by: Joel Colledge <joel.colledge@linbit.com>
Link: https://lore.kernel.org/r/20230113123538.144276-3-christoph.boehmwalder@linbit.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/drbd_limits.h')
| -rw-r--r-- | include/linux/drbd_limits.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index d64271ccece4..058f7600f79c 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -21,7 +21,7 @@ #define DRBD_MINOR_COUNT_DEF 32 #define DRBD_MINOR_COUNT_SCALE '1' -#define DRBD_VOLUME_MAX 65535 +#define DRBD_VOLUME_MAX 65534 #define DRBD_DIALOG_REFRESH_MIN 0 #define DRBD_DIALOG_REFRESH_MAX 600 |