linux-kernel - Re: [PATCH 2/2] 32-bit ABI: introduce ARCH_32BIT_OFF

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Message-ID: <20151229114341.GA15657@yury-N73SV>
Date:	Tue, 29 Dec 2015 14:43:41 +0300
From:	Yury Norov <ynorov@...iumnetworks.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	<cmetcalf@...hip.com>, <linux-arch@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <klimov.linux@...il.com>
Subject: Re: [PATCH 2/2] 32-bit ABI: introduce ARCH_32BIT_OFF_T config option

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@...iumnetworks.com>
> > 
> 
> Acked-by: Arnd Bergmann <arnd@...db.de>
> 
> 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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