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From: Arnd Bergmann <arnd@arndb.de>
To: Christoph Hellwig <hch@infradead.org>
Cc: Jens Axboe <axboe@kernel.dk>,
	"James E.J. Bottomley" <jejb@linux.ibm.com>,
	"Martin K. Petersen" <martin.petersen@oracle.com>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	y2038 Mailman List <y2038@lists.linaro.org>,
	Tejun Heo <tj@kernel.org>, Jan Kara <jack@suse.cz>,
	Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>,
	Dmitry Fomichev <dmitry.fomichev@wdc.com>,
	Ajay Joshi <ajay.joshi@wdc.com>,
	linux-block <linux-block@vger.kernel.org>
Subject: Re: [PATCH 21/24] compat_ioctl: block: move blkdev_compat_ioctl() into ioctl.c
Date: Thu, 12 Dec 2019 18:24:02 +0100
Message-ID: <CAK8P3a2SCr52MZ7Ch769e0bPA=tjSXj1EXkqr_MDyeioJjnk9w@mail.gmail.com> (raw)
In-Reply-To: <20191212163040.GD27991@infradead.org>

On Thu, Dec 12, 2019 at 5:30 PM Christoph Hellwig <hch@infradead.org> wrote:
>
> > +#ifdef CONFIG_COMPAT
> > +static int compat_put_ushort(unsigned long arg, unsigned short val)
> > +{
> > +     return put_user(val, (unsigned short __user *)compat_ptr(arg));
> > +}
> > +
> > +static int compat_put_int(unsigned long arg, int val)
> > +{
> > +     return put_user(val, (compat_int_t __user *)compat_ptr(arg));
> > +}
> > +
> > +static int compat_put_uint(unsigned long arg, unsigned int val)
> > +{
> > +     return put_user(val, (compat_uint_t __user *)compat_ptr(arg));
> > +}
> > +
> > +static int compat_put_long(unsigned long arg, long val)
> > +{
> > +     return put_user(val, (compat_long_t __user *)compat_ptr(arg));
> > +}
> > +
> > +static int compat_put_ulong(unsigned long arg, compat_ulong_t val)
> > +{
> > +     return put_user(val, (compat_ulong_t __user *)compat_ptr(arg));
> > +}
> > +
> > +static int compat_put_u64(unsigned long arg, u64 val)
> > +{
> > +     return put_user(val, (compat_u64 __user *)compat_ptr(arg));
> > +}
> > +#endif
>
> Can we lift these helpers to compat.h instead?

Nothing else uses them, and it's usually more readable to just
use put_user directly.

Note that the next patch removes most of them anyway, but
we could have another cleanup that removes the
put_int()/put_long()/etc from block/ioctl.c altogether.

       Arnd

  reply index

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-11 20:42 [PATCH 00/24] block, scsi: final compat_ioctl cleanup Arnd Bergmann
2019-12-11 20:42 ` [PATCH 02/24] compat: scsi: sg: fix v3 compat read/write interface Arnd Bergmann
2019-12-12 16:25   ` Christoph Hellwig
2019-12-12 17:34     ` Arnd Bergmann
2019-12-11 20:42 ` [PATCH 03/24] compat_ioctl: block: handle BLKREPORTZONE/BLKRESETZONE Arnd Bergmann
2019-12-12  1:20   ` Damien Le Moal
2019-12-11 20:42 ` [PATCH 04/24] compat_ioctl: block: handle BLKGETZONESZ/BLKGETNRZONES Arnd Bergmann
2019-12-12  1:20   ` Damien Le Moal
2019-12-11 20:42 ` [PATCH 05/24] compat_ioctl: block: handle add zone open, close and finish ioctl Arnd Bergmann
2019-12-12  1:20   ` Damien Le Moal
2019-12-11 20:42 ` [PATCH 06/24] compat_ioctl: block: handle Persistent Reservations Arnd Bergmann
2019-12-11 20:42 ` [PATCH 07/24] compaT_ioctl: ubd, aoe: use blkdev_compat_ptr_ioctl Arnd Bergmann
2019-12-11 20:42 ` [PATCH 08/24] compat_ioctl: move CDROM_SEND_PACKET handling into scsi Arnd Bergmann
2019-12-11 20:42 ` [PATCH 09/24] compat_ioctl: move CDROMREADADIO to cdrom.c Arnd Bergmann
2019-12-11 20:42 ` [PATCH 10/24] compat_ioctl: cdrom: handle CDROM_LAST_WRITTEN Arnd Bergmann
2019-12-17 15:20   ` [Y2038] " Ben Hutchings
2019-12-17 21:38     ` Arnd Bergmann
2019-12-11 20:42 ` [PATCH 11/24] compat_ioctl: block: handle cdrom compat ioctl in non-cdrom drivers Arnd Bergmann
2019-12-11 20:42 ` [PATCH 13/24] compat_ioctl: bsg: add handler Arnd Bergmann
2019-12-11 20:42 ` [PATCH 15/24] compat_ioctl: scsi: move ioctl handling into drivers Arnd Bergmann
2019-12-11 23:05   ` Michael S. Tsirkin
2019-12-12  0:28     ` Paolo Bonzini
2019-12-12  9:17       ` Arnd Bergmann
2019-12-12 10:27       ` Michael S. Tsirkin
2019-12-12 16:27       ` Christoph Hellwig
2019-12-12 16:35         ` Jens Axboe
2019-12-12 10:25   ` Michael S. Tsirkin
2019-12-11 20:42 ` [PATCH 18/24] compat_ioctl: move cdrom commands into cdrom.c Arnd Bergmann
2019-12-11 20:42 ` [PATCH 20/24] compat_ioctl: move HDIO ioctl handling into drivers/ide Arnd Bergmann
2019-12-12 16:29   ` Christoph Hellwig
2019-12-12 17:21     ` Arnd Bergmann
2019-12-11 20:42 ` [PATCH 21/24] compat_ioctl: block: move blkdev_compat_ioctl() into ioctl.c Arnd Bergmann
2019-12-12 16:30   ` Christoph Hellwig
2019-12-12 17:24     ` Arnd Bergmann [this message]
2019-12-11 20:42 ` [PATCH 22/24] compat_ioctl: block: simplify compat_blkpg_ioctl() Arnd Bergmann
2019-12-11 20:42 ` [PATCH 23/24] compat_ioctl: simplify up block/ioctl.c Arnd Bergmann

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