Re: [PATCH 2/2] 32-bit ABI: introduce ARCH_32BIT_OFF_T config option

From: Yury Norov
Date: Tue Dec 29 2015 - 06:44:08 EST


On Tue, Dec 29, 2015 at 12:02:33PM +0100, Arnd Bergmann wrote:
> On Tuesday 29 December 2015 12:26:35 Yury Norov wrote:
> > All new 32-bit architectures should have 64-bit off_t type, but existing
> > architectures has 32-bit ones.
> >
> > To handle it, new config option is added to arch/Kconfig that defaults
> > ARCH_32BIT_OFF_T to be disabled for non-64 bit architectures. All existing
> > 32-bit architectures enable it explicitly here.
> >
> > New option affects force_o_largefile() behaviour. Namely, if off_t is
> > 64-bits long, we have no reason to reject user to open big files.
> >
> > Note that even if architectures has only 64-bit off_t in the kernel
> > (arc, c6x, h8300, hexagon, metag, nios2, openrisc, tile32 and unicore32),
> > a libc may use 32-bit off_t, and therefore want to limit the file size
> > to 4GB unless specified differently in the open flags.
> >
> > Signed-off-by: Yury Norov <ynorov@xxxxxxxxxxxxxxxxxx>
> >
>
> Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
>
> Should we merge the two patches through my asm-generic tree now, or should
> we keep them in the ilp32 series, any preferences?
>
> I think either way works.
>
> Arnd

I'd prefer asm-generic tree because they are not related to ILP32 only.

Yury.
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