From: James Bottomley <James.Bottomley@HansenPartnership•com>
To: Jens Axboe <axboe@kernel•dk>, Kees Cook <keescook@chromium•org>
Cc: ulf.hansson@linaro•org, linux-atm-general@lists•sourceforge.net,
manohar.vanga@gmail•com, airlied@linux•ie,
Allen Pais <allen.lkml@gmail•com>,
linux-hyperv@vger•kernel.org, dri-devel@lists•freedesktop.org,
linux-kernel@vger•kernel.org, kys@microsoft•com,
anton.ivanov@cambridgegreys•com, devel@driverdev•osuosl.org,
linux-s390@vger•kernel.org,
linux1394-devel@lists•sourceforge.net, maximlevitsky@gmail•com,
richard@nod•at, deller@gmx•de, jassisinghbrar@gmail•com,
3chas3@gmail•com, intel-gfx@lists•freedesktop.org,
kuba@kernel•org, mporter@kernel•crashing.org, jdike@addtoit•com,
oakad@yahoo•com, s.hauer@pengutronix•de,
linux-input@vger•kernel.org, linux-um@lists•infradead.org,
linux-block@vger•kernel.org, broonie@kernel•org,
openipmi-developer@lists•sourceforge.net, mitch@sfgoth•com,
linux-arm-kernel@lists•infradead.org,
linux-parisc@vger•kernel.org, netdev@vger•kernel.org,
martyn@welchs•me.uk, dmitry.torokhov@gmail•com,
linux-mmc@vger•kernel.org, sre@kernel•org,
linux-spi@vger•kernel.org, alex.bou9@gmail•com,
Allen Pais <allen.cryptic@gmail•com>,
stefanr@s5r6•in-berlin.de, daniel@ffwll•ch,
linux-ntb@googlegroups•com,
Romain Perier <romain.perier@gmail•com>,
shawnguo@kernel•org, davem@davemloft•net
Subject: Re: [PATCH] block: convert tasklets to use new tasklet_setup() API
Date: Wed, 19 Aug 2020 07:59:45 -0700 [thread overview]
Message-ID: <1597849185.3875.7.camel@HansenPartnership.com> (raw)
In-Reply-To: <f3312928-430c-25f3-7112-76f2754df080@kernel.dk>
On Wed, 2020-08-19 at 07:00 -0600, Jens Axboe wrote:
> On 8/18/20 1:00 PM, James Bottomley wrote:
[...]
> > Since both threads seem to have petered out, let me suggest in
> > kernel.h:
> >
> > #define cast_out(ptr, container, member) \
> > container_of(ptr, typeof(*container), member)
> >
> > It does what you want, the argument order is the same as
> > container_of with the only difference being you name the containing
> > structure instead of having to specify its type.
>
> Not to incessantly bike shed on the naming, but I don't like
> cast_out, it's not very descriptive. And it has connotations of
> getting rid of something, which isn't really true.
Um, I thought it was exactly descriptive: you're casting to the outer
container. I thought about following the C++ dynamic casting style, so
out_cast(), but that seemed a bit pejorative. What about outer_cast()?
> FWIW, I like the from_ part of the original naming, as it has some
> clues as to what is being done here. Why not just from_container()?
> That should immediately tell people what it does without having to
> look up the implementation, even before this becomes a part of the
> accepted coding norm.
I'm not opposed to container_from() but it seems a little less
descriptive than outer_cast() but I don't really care. I always have
to look up container_of() when I'm using it so this would just be
another macro of that type ...
James
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next prev parent reply other threads:[~2020-08-19 15:01 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-17 9:15 [PATCH] arch: um: convert tasklets to use new tasklet_setup() API Allen Pais
2020-08-17 9:15 ` [PATCH] block: " Allen Pais
2020-08-17 13:56 ` Jens Axboe
2020-08-17 19:29 ` Kees Cook
2020-08-17 19:44 ` Jens Axboe
2020-08-17 19:48 ` Kees Cook
2020-08-17 20:02 ` Jens Axboe
2020-08-18 20:00 ` James Bottomley
2020-08-18 20:10 ` Kees Cook
2020-08-18 21:00 ` James Bottomley
2020-08-19 10:48 ` Allen
2020-08-19 13:00 ` Jens Axboe
2020-08-19 13:11 ` Greg KH
2020-08-19 13:17 ` Jens Axboe
2020-08-19 13:30 ` Greg KH
2020-08-19 14:59 ` James Bottomley [this message]
2020-08-19 16:24 ` Allen
2020-08-19 16:56 ` Jens Axboe
2020-08-19 21:39 ` James Bottomley
2020-08-26 1:51 ` Allen Pais
2020-08-26 9:55 ` Dan Carpenter
2020-08-26 15:13 ` Kees Cook
2020-08-27 1:37 ` Allen
2020-08-17 9:15 ` [PATCH] char: ipmi: " Allen Pais
2020-08-17 12:15 ` Corey Minyard
2020-08-18 9:16 ` Allen
2020-08-18 11:32 ` Corey Minyard
2020-08-17 9:15 ` [PATCH] driver: hv: " Allen Pais
2020-08-17 9:15 ` [PATCH] drivers: atm: " Allen Pais
2020-08-17 9:16 ` [PATCH] drivers: ntb: " Allen Pais
2020-08-17 9:16 ` [PATCH] drivers: rapidio: " Allen Pais
2020-08-17 9:16 ` [PATCH] drivers: s390: " Allen Pais
2020-08-17 9:16 ` [PATCH] drivers: vme: " Allen Pais
2020-08-17 9:16 ` [PATCH] drm: i915: " Allen Pais
2020-08-17 9:16 ` [PATCH] firewire: ohci: " Allen Pais
2020-08-17 9:16 ` [PATCH 1/2] hsi: nokia-modem: " Allen Pais
2020-08-17 9:16 ` [PATCH] input: serio: " Allen Pais
2020-08-17 9:16 ` [PATCH 1/2] mailbox: bcm: " Allen Pais
2020-08-17 9:16 ` [PATCH 1/2] memstick: jmb38x: " Allen Pais
2020-08-17 9:16 ` [PATCH 1/2] misc: ibmvmc: " Allen Pais
2020-08-17 9:16 ` [PATCH] net: atm: convert tasklets callbacks to use from_tasklet() Allen Pais
2020-08-17 9:16 ` [PATCH] platform: goldfish: convert tasklets to use new tasklet_setup() API Allen Pais
2020-10-18 21:50 ` [PATCH] arch: um: " Richard Weinberger
2020-10-19 7:39 ` Anton Ivanov
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