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| author | Arnd Bergmann <arnd@arndb.de> | 2019-11-28 15:48:10 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2020-01-03 09:32:59 +0100 |
| commit | ee6a129dffe10ae30b45b5a744e7c0a056291d13 (patch) | |
| tree | 6a78fcfc9f06e0eff4265bedddcf42543a0923c8 /mm | |
| parent | compat: scsi: sg: fix v3 compat read/write interface (diff) | |
| download | linux-ee6a129dffe10ae30b45b5a744e7c0a056291d13.tar.xz linux-ee6a129dffe10ae30b45b5a744e7c0a056291d13.zip | |
compat_ioctl: block: add blkdev_compat_ptr_ioctl
A lot of block drivers need only a trivial .compat_ioctl callback.
Add a helper function that can be set as the callback pointer
to only convert the argument using the compat_ptr() conversion
and otherwise assume all input and output data is compatible,
or handled using in_compat_syscall() checks.
This mirrors the compat_ptr_ioctl() helper function used in
character devices.
Reviewed-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions