linux-kernel - Re: [PATCH v6 13/17] arm64:ilp32: add sys_ilp32.c and a separate table (in entry.S) to use it

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Message-ID: <13567088.yUyVvkDQhR@wuerfel>
Date:	Mon, 16 Nov 2015 14:54:31 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Andreas Schwab <schwab@...e.de>
Cc:	linux-arm-kernel@...ts.infradead.org,
	Joseph Myers <joseph@...esourcery.com>,
	Rich Felker <dalias@...c.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Chris Metcalf <cmetcalf@...hip.com>,
	Yury Norov <ynorov@...iumnetworks.com>,
	Philipp Tomsich <philipp.tomsich@...obroma-systems.com>,
	"Kapoor, Prasun" <Prasun.Kapoor@...iumnetworks.com>,
	Alexander Graf <agraf@...e.de>,
	Andrey Konovalov <andrey.konovalov@...aro.org>,
	Mike Frysinger <vapier@...too.org>,
	Andrew Pinski <pinskia@...il.com>,
	Alexey Klimov <klimov.linux@...il.com>, broonie@...nel.org,
	bamvor.zhangjian@...wei.com, David Daney <ddaney.cavm@...il.com>,
	Paul Eggert <eggert@...ucla.edu>,
	Nathan Lynch <Nathan_Lynch@...tor.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Pinski <apinski@...ium.com>,
	Jan Dakinevich <jan.dakinevich@...il.com>,
	christoph.muellner@...obroma-systems.com
Subject: Re: [PATCH v6 13/17] arm64:ilp32: add sys_ilp32.c and a separate table (in entry.S) to use it

On Monday 16 November 2015 14:34:50 Andreas Schwab wrote:
> Arnd Bergmann <arnd@...db.de> writes:
> 
> > ino_t seems to be the only other type in 'struct stat' that depends
> > on _FILE_OFFSET_BITS in glibc.
> 
> There is also blkcnt_t, and then there is fsblkcnt_t, fsfilcnt_t and
> fsword_t in struct statfs.

Ok, got it.

Again these are just internal to glibc, the kernel just uses fixed width
types in

typedef struct {
        int     val[2];
} __kernel_fsid_t;

struct statfs64 {
        __u32 f_type;
        __u32 f_bsize;
        __u64 f_blocks; 
        __u64 f_bfree;  
        __u64 f_bavail;
        __u64 f_files;
        __u64 f_ffree;
        __kernel_fsid_t f_fsid;
        __u32 f_namelen;
        __u32 f_frsize;
        __u32 f_flags;
        __u32 f_spare[4];
};

so we need to be careful to define them in glibc to match the kernel
types, but the kernel definition doesn't need changes.

	Arnd
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