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From: Jim Rees <rees-63aXycvo3TyHXe+LvDLADg@public.gmane.org>
To: Sasha Levin <levinsasha928-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: snitzer-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
	neilb-l3A5Bk7waGM@public.gmane.org,
	fweisbec-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
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	Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
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Subject: Re: [PATCH v8 01/16] hashtable: introduce a small and naive hashtable
Date: Tue, 30 Oct 2012 20:51:28 -0400	[thread overview]
Message-ID: <20121031005128.GA30251@umich.edu> (raw)
In-Reply-To: <CA+1xoqeCKS2E4TWCUCELjDqV2pWS4v6EyV6K-=w-GRi_K6quiQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>

Sasha Levin wrote:

  On Tue, Oct 30, 2012 at 5:42 PM, Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> wrote:
  > Hello,
  >
  > Just some nitpicks.
  >
  > On Tue, Oct 30, 2012 at 02:45:57PM -0400, Sasha Levin wrote:
  >> +/* Use hash_32 when possible to allow for fast 32bit hashing in 64bit kernels. */
  >> +#define hash_min(val, bits)                                                  \
  >> +({                                                                           \
  >> +     sizeof(val) <= 4 ?                                                      \
  >> +     hash_32(val, bits) :                                                    \
  >> +     hash_long(val, bits);                                                   \
  >> +})
  >
  > Doesn't the above fit in 80 column.  Why is it broken into multiple
  > lines?  Also, you probably want () around at least @val.  In general,
  > it's a good idea to add () around any macro argument to avoid nasty
  > surprises.
  
  It was broken to multiple lines because it looks nicer that way (IMO).
  
  If we wrap it with () it's going to go over 80, so it's going to stay
  broken down either way :)

I would prefer the body be all on one line too. But shouldn't this be a
static inline function?

WARNING: multiple messages have this Message-ID (diff)
From: Jim Rees <rees@umich.edu>
To: Sasha Levin <levinsasha928@gmail.com>
Cc: Tejun Heo <tj@kernel.org>,
	torvalds@linux-foundation.org, akpm@linux-foundation.org,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	paul.gortmaker@windriver.com, davem@davemloft.net,
	rostedt@goodmis.org, mingo@elte.hu, ebiederm@xmission.com,
	aarcange@redhat.com, ericvh@gmail.com, netdev@vger.kernel.org,
	josh@joshtriplett.org, eric.dumazet@gmail.com,
	mathieu.desnoyers@efficios.com, axboe@kernel.dk, agk@redhat.com,
	dm-devel@redhat.com, neilb@suse.de, ccaulfie@redhat.com,
	teigland@redhat.com, Trond.Myklebust@netapp.com,
	bfields@fieldses.org, fweisbec@gmail.com, jesse@nicira.com,
	venkat.x.venkatsubra@oracle.com, ejt@redhat.com,
	snitzer@redhat.com, edumazet@google.com,
	linux-nfs@vger.kernel.org, dev@openvswitch.org,
	rds-devel@oss.oracle.com, lw@cn.fujitsu.com
Subject: Re: [PATCH v8 01/16] hashtable: introduce a small and naive hashtable
Date: Tue, 30 Oct 2012 20:51:28 -0400	[thread overview]
Message-ID: <20121031005128.GA30251@umich.edu> (raw)
In-Reply-To: <CA+1xoqeCKS2E4TWCUCELjDqV2pWS4v6EyV6K-=w-GRi_K6quiQ@mail.gmail.com>

Sasha Levin wrote:

  On Tue, Oct 30, 2012 at 5:42 PM, Tejun Heo <tj@kernel.org> wrote:
  > Hello,
  >
  > Just some nitpicks.
  >
  > On Tue, Oct 30, 2012 at 02:45:57PM -0400, Sasha Levin wrote:
  >> +/* Use hash_32 when possible to allow for fast 32bit hashing in 64bit kernels. */
  >> +#define hash_min(val, bits)                                                  \
  >> +({                                                                           \
  >> +     sizeof(val) <= 4 ?                                                      \
  >> +     hash_32(val, bits) :                                                    \
  >> +     hash_long(val, bits);                                                   \
  >> +})
  >
  > Doesn't the above fit in 80 column.  Why is it broken into multiple
  > lines?  Also, you probably want () around at least @val.  In general,
  > it's a good idea to add () around any macro argument to avoid nasty
  > surprises.
  
  It was broken to multiple lines because it looks nicer that way (IMO).
  
  If we wrap it with () it's going to go over 80, so it's going to stay
  broken down either way :)

I would prefer the body be all on one line too. But shouldn't this be a
static inline function?

WARNING: multiple messages have this Message-ID (diff)
From: Jim Rees <rees@umich.edu>
To: Sasha Levin <levinsasha928@gmail.com>
Cc: Tejun Heo <tj@kernel.org>,
	torvalds@linux-foundation.org, akpm@linux-foundation.org,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	paul.gortmaker@windriver.com, davem@davemloft.net,
	rostedt@goodmis.org, mingo@elte.hu, ebiederm@xmission.com,
	aarcange@redhat.com, ericvh@gmail.com, netdev@vger.kernel.org,
	josh@joshtriplett.org, eric.dumazet@gmail.com,
	mathieu.desnoyers@efficios.com, axboe@kernel.dk, agk@redhat.com,
	dm-devel@redhat.com, neilb@suse.de, ccaulfie@redhat.com,
	teigland@redhat.com, Trond.Myklebust@netapp.com,
	bfields@fieldses.org, fweisbec@gmail.com, jesse@nicira.com,
	venkat.x.venkatsubra@oracle.com, ejt@redhat.com,
	snitzer@redhat.com, edumazet@google.com,
	linux-nfs@vger.kernel.org, dev@openvswitch.org,
	rds-devel@oss.oracle.com, lw@cn.fujitsu.com
Subject: Re: [PATCH v8 01/16] hashtable: introduce a small and naive hashtable
Date: Tue, 30 Oct 2012 20:51:28 -0400	[thread overview]
Message-ID: <20121031005128.GA30251@umich.edu> (raw)
In-Reply-To: <CA+1xoqeCKS2E4TWCUCELjDqV2pWS4v6EyV6K-=w-GRi_K6quiQ@mail.gmail.com>

Sasha Levin wrote:

  On Tue, Oct 30, 2012 at 5:42 PM, Tejun Heo <tj@kernel.org> wrote:
  > Hello,
  >
  > Just some nitpicks.
  >
  > On Tue, Oct 30, 2012 at 02:45:57PM -0400, Sasha Levin wrote:
  >> +/* Use hash_32 when possible to allow for fast 32bit hashing in 64bit kernels. */
  >> +#define hash_min(val, bits)                                                  \
  >> +({                                                                           \
  >> +     sizeof(val) <= 4 ?                                                      \
  >> +     hash_32(val, bits) :                                                    \
  >> +     hash_long(val, bits);                                                   \
  >> +})
  >
  > Doesn't the above fit in 80 column.  Why is it broken into multiple
  > lines?  Also, you probably want () around at least @val.  In general,
  > it's a good idea to add () around any macro argument to avoid nasty
  > surprises.
  
  It was broken to multiple lines because it looks nicer that way (IMO).
  
  If we wrap it with () it's going to go over 80, so it's going to stay
  broken down either way :)

I would prefer the body be all on one line too. But shouldn't this be a
static inline function?

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  parent reply	other threads:[~2012-10-31  0:51 UTC|newest]

Thread overview: 91+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-30 18:45 [PATCH v8 01/16] hashtable: introduce a small and naive hashtable Sasha Levin
2012-10-30 18:45 ` Sasha Levin
2012-10-30 18:45 ` [PATCH v8 03/16] mm,ksm: use new hashtable implementation Sasha Levin
2012-10-30 18:45   ` Sasha Levin
2012-10-30 18:46 ` [PATCH v8 05/16] mm/huge_memory: " Sasha Levin
2012-10-30 18:46   ` Sasha Levin
2012-10-30 18:46 ` [PATCH v8 09/16] SUNRPC/cache: " Sasha Levin
2012-10-30 18:46   ` Sasha Levin
     [not found] ` <1351622772-16400-1-git-send-email-levinsasha928-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2012-10-30 18:45   ` [PATCH v8 02/16] userns: " Sasha Levin
2012-10-30 18:45     ` Sasha Levin
2012-10-30 18:45     ` Sasha Levin
2012-10-30 18:46   ` [PATCH v8 04/16] workqueue: " Sasha Levin
2012-10-30 18:46     ` Sasha Levin
2012-10-30 18:46     ` Sasha Levin
2012-10-30 18:46   ` [PATCH v8 06/16] tracepoint: " Sasha Levin
2012-10-30 18:46     ` Sasha Levin
2012-10-30 18:46     ` Sasha Levin
2012-10-30 19:20     ` Mathieu Desnoyers
2012-10-30 19:20       ` Mathieu Desnoyers
2012-10-30 18:46   ` [PATCH v8 07/16] net, 9p: " Sasha Levin
2012-10-30 18:46     ` [PATCH v8 07/16] net,9p: " Sasha Levin
2012-10-30 18:46     ` Sasha Levin
2012-10-30 18:46   ` [PATCH v8 08/16] block, elevator: " Sasha Levin
2012-10-30 18:46     ` [PATCH v8 08/16] block,elevator: " Sasha Levin
2012-10-30 18:46     ` Sasha Levin
2012-10-30 18:46   ` [PATCH v8 10/16] dlm: " Sasha Levin
2012-10-30 18:46     ` Sasha Levin
2012-10-30 18:46     ` Sasha Levin
2012-10-30 18:46   ` [PATCH v8 11/16] net, l2tp: " Sasha Levin
2012-10-30 18:46     ` [PATCH v8 11/16] net,l2tp: " Sasha Levin
2012-10-30 18:46     ` Sasha Levin
2012-10-30 18:46   ` [PATCH v8 12/16] dm: " Sasha Levin
2012-10-30 18:46     ` Sasha Levin
2012-10-30 18:46     ` Sasha Levin
2012-10-30 18:46   ` [PATCH v8 13/16] lockd: " Sasha Levin
2012-10-30 18:46     ` Sasha Levin
2012-10-30 18:46     ` Sasha Levin
2012-10-30 18:46   ` [PATCH v8 14/16] net, rds: " Sasha Levin
2012-10-30 18:46     ` [PATCH v8 14/16] net,rds: " Sasha Levin
2012-10-30 18:46     ` Sasha Levin
2012-10-30 18:46   ` [PATCH v8 15/16] openvswitch: " Sasha Levin
2012-10-30 18:46     ` Sasha Levin
2012-10-30 18:46     ` Sasha Levin
2012-10-30 18:46   ` [PATCH v8 16/16] tracing output: " Sasha Levin
2012-10-30 18:46     ` Sasha Levin
2012-10-30 18:46     ` Sasha Levin
     [not found]     ` <1351622772-16400-16-git-send-email-levinsasha928-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2012-10-30 19:23       ` Steven Rostedt
2012-10-30 19:23         ` Steven Rostedt
2012-10-30 19:23         ` Steven Rostedt
2012-10-30 19:19   ` [PATCH v8 01/16] hashtable: introduce a small and naive hashtable Mathieu Desnoyers
2012-10-30 19:19     ` Mathieu Desnoyers
2012-10-30 19:19     ` Mathieu Desnoyers
2012-10-30 21:42 ` Tejun Heo
2012-10-30 21:42   ` Tejun Heo
2012-10-31  0:33   ` Sasha Levin
2012-10-31  0:33     ` Sasha Levin
     [not found]     ` <CA+1xoqeCKS2E4TWCUCELjDqV2pWS4v6EyV6K-=w-GRi_K6quiQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-10-31  0:51       ` Jim Rees [this message]
2012-10-31  0:51         ` Jim Rees
2012-10-31  0:51         ` Jim Rees
     [not found]         ` <20121031005128.GA30251-63aXycvo3TyHXe+LvDLADg@public.gmane.org>
2012-10-31  1:15           ` Sasha Levin
2012-10-31  1:15             ` Sasha Levin
2012-10-31  1:15             ` Sasha Levin
2012-10-31  1:16       ` Steven Rostedt
2012-10-31  1:16         ` Steven Rostedt
2012-10-31  1:16         ` Steven Rostedt
     [not found]         ` <1351646186.4004.41.camel-f9ZlEuEWxVcJvu8Pb33WZ0EMvNT87kid@public.gmane.org>
2012-10-31  1:25           ` Linus Torvalds
2012-10-31  1:25             ` Linus Torvalds
2012-10-31  1:25             ` Linus Torvalds
2012-10-31  1:36             ` Sasha Levin
2012-10-31  1:36               ` Sasha Levin
     [not found]               ` <CA+1xoqd8vAn+N1JuhpXRjSr74OPtnnw_1UBhf8=c4WDC3jOirw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-10-31  2:23                 ` Linus Torvalds
2012-10-31  2:23                   ` Linus Torvalds
2012-10-31  2:23                   ` Linus Torvalds
     [not found]                   ` <CA+55aFxK+xr0Gc+ZLgi3Ch8YgoV78vvr+Q-7cP=kC7asFB5k5w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-11-02  4:23                     ` Sasha Levin
2012-11-02  4:23                       ` Sasha Levin
2012-11-02  4:23                       ` Sasha Levin
     [not found]             ` <CA+55aFzFMrOUwdHHJ5-YUtEzTHGvdRosQc+K+trjub0K-w-D3A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-10-31  1:36               ` Steven Rostedt
2012-10-31  1:36                 ` Steven Rostedt
2012-10-31  1:36                 ` Steven Rostedt
2012-10-31  2:24             ` Al Viro
2012-10-31  2:24               ` Al Viro
2012-10-31  2:48               ` Linus Torvalds
2012-10-31  2:48                 ` Linus Torvalds
     [not found]                 ` <CA+55aFyU30Z2JS9XJ4KTordbAw-2EBVD7xF4K3eAhKVRCJw8YA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-10-31  3:24                   ` Al Viro
2012-10-31  3:24                     ` Al Viro
2012-10-31  3:24                     ` Al Viro
     [not found]                     ` <20121031032431.GG2616-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2012-10-31  3:48                       ` Linus Torvalds
2012-10-31  3:48                         ` Linus Torvalds
2012-10-31  3:48                         ` Linus Torvalds
2012-10-31  9:46         ` David Laight
2012-10-31  9:46           ` David Laight

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