Re: [PATCH 4.19] Revert "loop: Remove sector_t truncation checks"

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On Mon, Apr 29, 2024 at 11:40:53PM +0200, Ben Hutchings wrote:
> This reverts commit f92a3b0d003b9f7eb1f452598966a08802183f47, which
> was commit 083a6a50783ef54256eec3499e6575237e0e3d53 upstream.  In 4.19
> there is still an option to use 32-bit sector_t on 32-bit
> architectures, so we need to keep checking for truncation.
> 
> Since loop_set_status() was refactored by subsequent patches, this
> reintroduces its truncation check in loop_set_status_from_info()
> instead.
> 
> I tested that the loop ioctl operations have the expected behaviour on
> x86_64, x86_32 with CONFIG_LBDAF=y, and (the special case) x86_32 with
> CONFIG_LBDAF=n.
> 
> Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
> ---
>  drivers/block/loop.c | 19 +++++++++++++++----
>  1 file changed, 15 insertions(+), 4 deletions(-)

Thanks, both reverts now queued up.

greg k-h




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