Re: [PATCH] fs/locks: fix fcntl_getlk64/fcntl_setlk64 stub prototypes

[Christian Brauner]

On Tue, Nov 23, 2021 at 05:05:07PM +0100, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@xxxxxxxx>
> 
> My patch to rework oabi fcntl64() introduced a harmless
> sparse warning when file locking is disabled:
> 
>    arch/arm/kernel/sys_oabi-compat.c:251:51: sparse: sparse: incorrect type in argument 3 (different address spaces) @@     expected struct flock64 [noderef] __user *user @@     got struct flock64 * @@
>    arch/arm/kernel/sys_oabi-compat.c:251:51: sparse:     expected struct flock64 [noderef] __user *user
>    arch/arm/kernel/sys_oabi-compat.c:251:51: sparse:     got struct flock64 *
>    arch/arm/kernel/sys_oabi-compat.c:265:55: sparse: sparse: incorrect type in argument 4 (different address spaces) @@     expected struct flock64 [noderef] __user *user @@     got struct flock64 * @@
>    arch/arm/kernel/sys_oabi-compat.c:265:55: sparse:     expected struct flock64 [noderef] __user *user
>    arch/arm/kernel/sys_oabi-compat.c:265:55: sparse:     got struct flock64 *
> 
> When file locking is enabled, everything works correctly and the
> right data gets passed, but the stub declarations in linux/fs.h
> did not get modified when the calling conventions changed in an
> earlier patch.
> 
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> Fixes: 7e2d8c29ecdd ("ARM: 9111/1: oabi-compat: rework fcntl64() emulation")
> Fixes: a75d30c77207 ("fs/locks: pass kernel struct flock to fcntl_getlk/setlk")
> Cc: Christoph Hellwig <hch@xxxxxx>
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---

Looks good. Thanks!
Acked-by: Christian Brauner <christian.brauner@xxxxxxxxxx>