Re: [PATCH v7 1/4] lib/percpu-list: Per-cpu list with associated per-cpu locks

From	Waiman Long <waiman.long@hpe.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v7 1/4] lib/percpu-list: Per-cpu list with associated per-cpu locks
Date	2016-04-13 19:50 +0200
Message-ID	<rnx5o-4TK-17@gated-at.bofh.it> (permalink)
References	<rnfrQ-72b-15@gated-at.bofh.it> <rnfBw-7qw-15@gated-at.bofh.it> <rnuAy-38u-17@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

On 04/13/2016 11:03 AM, Christoph Lameter wrote:
> On Tue, 12 Apr 2016, Waiman Long wrote:
>
>> List entry insertion is strictly per cpu. List deletion, however, can
>> happen in a cpu other than the one that did the insertion. So we still
>> need lock to protect the list. Because of that, there may still be
>> a small amount of contention when deletion is being done.
> Ok then the list is not per cpu anymore. Can we call this something else
> please to avoid confusion? Spinlocks in per cpu structures are a bit
> confusing otherwise. Seems that there is no requirement that the list can
> only be accessed from a single cpu so its not per cpu per se anymore.
>
> Maybe lock-list instead of percpu-list?
>

I am fine with a name change. I am not that good in naming stuff. How 
about distributed and locked list, or dlock_list in short?

Cheers,
Longman

Thread

[PATCH v7 0/4] vfs: Use per-cpu list for SB's s_inodes list Waiman Long <Waiman.Long@hpe.com> - 2016-04-13 01:00 +0200
  [PATCH v7 1/4] lib/percpu-list: Per-cpu list with associated per-cpu locks Waiman Long <Waiman.Long@hpe.com> - 2016-04-13 01:10 +0200
    Re: [PATCH v7 1/4] lib/percpu-list: Per-cpu list with associated  per-cpu locks Boqun Feng <boqun.feng@gmail.com> - 2016-04-13 04:20 +0200
      Re: [PATCH v7 1/4] lib/percpu-list: Per-cpu list with associated  per-cpu locks Waiman Long <waiman.long@hpe.com> - 2016-04-13 20:00 +0200
        Re: [PATCH v7 1/4] lib/percpu-list: Per-cpu list with associated  per-cpu locks Boqun Feng <boqun.feng@gmail.com> - 2016-04-15 01:40 +0200
    Re: [PATCH v7 1/4] lib/percpu-list: Per-cpu list with associated  per-cpu locks Christoph Lameter <cl@linux.com> - 2016-04-13 17:10 +0200
      Re: [PATCH v7 1/4] lib/percpu-list: Per-cpu list with associated  per-cpu locks Waiman Long <waiman.long@hpe.com> - 2016-04-13 19:50 +0200
        Re: [PATCH v7 1/4] lib/percpu-list: Per-cpu list with associated  per-cpu locks Christoph Lameter <cl@linux.com> - 2016-04-13 20:10 +0200
    Re: [PATCH v7 1/4] lib/percpu-list: Per-cpu list with associated  per-cpu locks Jan Kara <jack@suse.cz> - 2016-04-14 16:20 +0200
      Re: [PATCH v7 1/4] lib/percpu-list: Per-cpu list with associated  per-cpu locks Waiman Long <waiman.long@hpe.com> - 2016-04-14 20:50 +0200

csiph-web