From: Andrew Morton <akpm@linux-foundation.org>
To: David Rientjes <rientjes@google.com>
Cc: Dave Jones <davej@redhat.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Chen Gang <gang.chen@asianux.com>, Rik van Riel <riel@redhat.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [patch] mm, mempolicy: make mpol_to_str robust and always succeed
Date: Wed, 25 Sep 2013 14:30:09 -0700 [thread overview]
Message-ID: <20130925143009.913fb1c042abe10d91c86c8b@linux-foundation.org> (raw)
In-Reply-To: <alpine.DEB.2.02.1309251057080.17676@chino.kir.corp.google.com>
On Wed, 25 Sep 2013 10:58:27 -0700 (PDT) David Rientjes <rientjes@google.com> wrote:
> On Tue, 24 Sep 2013, Dave Jones wrote:
>
> > > /* fall through */
> > >
> > > for all of them would be pretty annoying.
> >
> > agreed, but with that example, it seems pretty obvious (to me at least)
> > that the lack of break's is intentional. Where it gets trickier to
> > make quick judgment calls is cases like the one I mentioned above,
> > where there are only a few cases, and there's real code involved in
> > some but not all cases.
> >
>
> I fully agree and have code in the oom killer that has the "fall through"
> comment if there's code in between the case statements, but I think things
> like
>
> case MPOL_BIND:
> case MPOL_INTERLEAVE:
> ...
>
> is quite easy to read. I don't feel strongly at all, though, so I'll just
> leave it to Andrew's preference.
I've never even thought about it, but that won't prevent me from
pretending otherwise! How about:
This:
case WIBBLE:
something();
something_else();
case WOBBLE:
needs a /* fall through */ comment (because it *looks* like a mistake),
whereas
case WIBBLE:
case WOBBLE:
does not?
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next prev parent reply other threads:[~2013-09-25 21:30 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-20 3:56 [PATCH 0/3] mm: mempolicy: the failure processing about mpol_to_str() Chen Gang
2013-08-20 3:57 ` [PATCH 1/3] mm/mempolicy.c: still fill buffer as full as possible when buffer space is not enough in mpol_to_str() Chen Gang
2013-08-20 3:58 ` [PATCH 2/3] fs/proc/task_mmu.c: check the return value of mpol_to_str() Chen Gang
2013-08-20 3:59 ` [PATCH 3/3] mm/shmem.c: " Chen Gang
2013-08-20 5:30 ` [PATCH 0/3] mm: mempolicy: the failure processing about mpol_to_str() Cyrill Gorcunov
2013-08-20 5:41 ` Chen Gang
2013-08-20 6:47 ` Cyrill Gorcunov
2013-08-20 7:48 ` Chen Gang
2013-08-20 7:51 ` Chen Gang
2013-08-20 8:09 ` Chen Gang
2013-08-20 8:13 ` Chen Gang F T
2013-08-20 8:20 ` Chen Gang
2013-08-20 8:25 ` Cyrill Gorcunov
2013-08-20 8:31 ` Chen Gang
2013-08-21 2:21 ` [PATCH 0/3] mm: shmem: check the return value of mpol_to_str() Chen Gang
2013-08-21 2:22 ` [PATCH 1/3] fs/proc/task_mmu.c: " Chen Gang
2013-08-21 2:23 ` [PATCH 2/3] mm/shmem.c: let shmem_show_mpol() return value Chen Gang
2013-08-21 2:24 ` [PATCH 3/3] mm/shmem.c: check the return value of mpol_to_str() Chen Gang
2013-08-21 22:03 ` [PATCH 2/3] mm/shmem.c: let shmem_show_mpol() return value Andrew Morton
2013-08-22 0:52 ` Chen Gang
2013-08-22 1:04 ` [PATCH] mm/shmem.c: check the return value of mpol_to_str() Chen Gang
2013-09-03 5:32 ` Chen Gang
2013-09-05 0:24 ` [PATCH v2] " Chen Gang
2013-09-09 20:30 ` David Rientjes
2013-09-10 0:47 ` Chen Gang
2013-09-10 6:43 ` David Rientjes
2013-09-10 7:01 ` Chen Gang
2013-09-12 0:33 ` David Rientjes
2013-09-12 2:19 ` KOSAKI Motohiro
2013-09-12 3:13 ` Chen Gang
2013-09-13 21:12 ` David Rientjes
2013-09-14 2:51 ` KOSAKI Motohiro
2013-09-16 3:27 ` Chen Gang
2013-09-16 20:13 ` David Rientjes
2013-09-17 0:45 ` Chen Gang
2013-09-17 22:51 ` David Rientjes
2013-09-18 1:20 ` Chen Gang
2013-09-12 3:02 ` Chen Gang
2013-09-12 18:19 ` KOSAKI Motohiro
2013-09-13 2:23 ` Chen Gang
2013-09-13 16:50 ` KOSAKI Motohiro
2013-09-16 2:55 ` Chen Gang
2013-09-16 16:16 ` KOSAKI Motohiro
2013-09-17 1:10 ` Chen Gang
2013-09-17 22:53 ` David Rientjes
2013-09-18 1:37 ` Chen Gang
2013-09-18 22:17 ` David Rientjes
2013-09-13 21:14 ` David Rientjes
2013-09-16 3:17 ` Chen Gang
2013-09-25 2:58 ` [patch] mm, mempolicy: make mpol_to_str robust and always succeed David Rientjes
2013-09-25 3:11 ` Dave Jones
2013-09-25 3:18 ` David Rientjes
2013-09-25 3:25 ` Dave Jones
2013-09-25 17:58 ` David Rientjes
2013-09-25 21:30 ` Andrew Morton [this message]
2013-09-25 22:06 ` David Rientjes
2013-08-21 5:31 ` [PATCH 0/3] mm: shmem: check the return value of mpol_to_str() Cyrill Gorcunov
2013-08-21 5:48 ` Chen Gang
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