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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Stephen Rothwell <sfr@canb.auug.org.au>,
	linux-next <linux-next@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Dave Chinner <dchinner@redhat.com>,
	Glauber Costa <glommer@openvz.org>
Subject: Re: linux-next: manual merge of the akpm tree with Linus' tree
Date: Fri, 13 Sep 2013 16:31:38 -0400	[thread overview]
Message-ID: <CA+55aFyZOBa=+zOXT5tanvM+wN-vgb6vKhuWuF1Au7x1wSsX5w@mail.gmail.com> (raw)
In-Reply-To: <CA+55aFxizbVmQE2Y94BRj3kDFdf6hzNHuy-O0qBFw3jnT_mMLw@mail.gmail.com>

On Fri, Sep 13, 2013 at 4:25 PM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
> Yes. And I found the opposite bug in one place: when we are collecting
> dentries by walking the parents etc, we do *not* hold the global RCU
> lock, so we cannot use the "d_lru_shrink_list()" thing after all. It's
> correct as far as the internal logic of fs/dcache.c goes, but it
> violates the global LRU list rules. So I replaced that with a
> dentry_lru_del() followed by a d_shrink_add() instead.

Actually, I replaced it with d_lru_del()+d_shrink_add(), because afaik
we should be guaranteed that the dentry in question is on the global
RCU list (we checked that refcount is 0, and it's not on a local
list).

Agreed?

The patch I sent out already had that version, I just "documented" my first one.

             Linus

  reply	other threads:[~2013-09-13 20:31 UTC|newest]

Thread overview: 106+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-09-10  4:38 linux-next: manual merge of the akpm tree with Linus' tree Stephen Rothwell
2013-09-10 22:27 ` Andrew Morton
2013-09-10 22:29   ` Al Viro
2013-09-10 22:35     ` Andrew Morton
2013-09-10 22:36       ` Al Viro
2013-09-10 22:39         ` Al Viro
2013-09-10 22:41         ` Andrew Morton
2013-09-10 22:48           ` Al Viro
2013-09-10 22:59             ` Al Viro
2013-09-10 23:13               ` Andrew Morton
2013-09-10 23:55                 ` Al Viro
2013-09-11  4:30                 ` Stephen Rothwell
2013-09-10 23:37               ` Linus Torvalds
2013-09-10 23:53                 ` Al Viro
2013-09-11  0:01                   ` Linus Torvalds
2013-09-11  0:39                     ` Dave Chinner
2013-09-13  0:56                 ` Linus Torvalds
2013-09-13  1:12                   ` Linus Torvalds
2013-09-13  1:35                     ` Al Viro
2013-09-13 19:12                     ` Linus Torvalds
2013-09-13 19:28                       ` Linus Torvalds
2013-09-13 19:54                       ` Linus Torvalds
2013-09-13 20:00                       ` Al Viro
2013-09-13 20:18                         ` Al Viro
2013-09-13 20:23                           ` Al Viro
2013-09-13 20:25                         ` Linus Torvalds
2013-09-13 20:31                           ` Linus Torvalds [this message]
2013-09-13 20:31                           ` Al Viro
2013-09-13 20:34                             ` Linus Torvalds
2013-09-10 22:35   ` Linus Torvalds
2013-09-10 22:44     ` Andrew Morton
2013-09-11  0:30       ` Stephen Rothwell
2013-09-11  0:41         ` Linus Torvalds
  -- strict thread matches above, loose matches on Subject: below --
2019-12-02  2:17 Stephen Rothwell
2019-12-02  2:08 Stephen Rothwell
2018-10-15  7:22 Stephen Rothwell
2018-10-15  7:04 Stephen Rothwell
2018-03-26  8:56 Stephen Rothwell
2017-01-09  2:51 Stephen Rothwell
2016-12-12  5:49 Stephen Rothwell
2016-01-19  2:42 Stephen Rothwell
2016-01-19  2:36 Stephen Rothwell
2015-07-27  5:26 Stephen Rothwell
2013-09-10  4:21 Stephen Rothwell
2013-09-10  4:09 Stephen Rothwell
2013-09-10  4:12 ` Stephen Rothwell
2013-09-09  5:38 Stephen Rothwell
2013-09-09  5:22 Stephen Rothwell
2013-09-09  5:16 Stephen Rothwell
2013-08-30  8:44 Stephen Rothwell
2013-05-27  6:20 Stephen Rothwell
2013-05-20  4:04 Stephen Rothwell
2013-05-20 12:19 ` Chris Mason
2013-05-13  5:20 Eric Paris
2013-05-13  2:07 Stephen Rothwell
2013-05-13  2:11 ` Eric Paris
2013-05-13  4:16   ` Stephen Rothwell
2013-05-13  4:49   ` Kees Cook
2013-05-13  5:14     ` Eric Paris
2013-05-02  6:01 Stephen Rothwell
2013-04-29  8:38 Stephen Rothwell
2013-04-19  7:40 Stephen Rothwell
2013-04-16  7:25 Stephen Rothwell
2013-04-03  6:10 Stephen Rothwell
2013-03-25  4:22 Stephen Rothwell
2013-03-04  2:21 Stephen Rothwell
2013-01-04  3:27 Stephen Rothwell
2012-12-11  5:25 Stephen Rothwell
2012-12-11  5:22 Stephen Rothwell
2012-12-11  7:58 ` Glauber Costa
2012-12-07  6:39 Stephen Rothwell
2012-11-30  6:24 Stephen Rothwell
2012-11-26 12:52 Stephen Rothwell
2012-11-26 12:48 Stephen Rothwell
2012-11-26 13:25 ` Xiaotian Feng
2012-11-26 12:34 Stephen Rothwell
2012-10-15  2:07 Stephen Rothwell
2012-10-15 22:14 ` Catalin Marinas
2012-10-01 14:15 Stephen Rothwell
2012-08-22  5:59 Stephen Rothwell
2012-08-22  8:58 ` Mel Gorman
2012-07-27  3:57 Stephen Rothwell
2012-07-02  6:39 Stephen Rothwell
2012-06-04  4:58 Stephen Rothwell
2012-05-31  4:24 Stephen Rothwell
2012-05-31  4:13 Stephen Rothwell
2012-05-31  7:25 ` Johannes Weiner
2012-05-31  8:24   ` Stephen Rothwell
2012-05-31  8:27     ` Stephen Rothwell
2012-05-21  8:23 Stephen Rothwell
2012-05-21  8:13 Stephen Rothwell
2012-05-21  8:16 ` Cyrill Gorcunov
2012-03-08  6:53 Stephen Rothwell
2012-03-08  7:32 ` Andrew Morton
2012-03-08  7:41   ` Stephen Rothwell
2012-03-08  7:50     ` Andrew Morton
2012-03-08  7:50       ` Xiao Guangrong
2012-03-08  9:59       ` Xiao Guangrong
2012-03-08 21:24         ` Andrew Morton
2012-03-08 23:42           ` Linus Torvalds
2011-12-28  7:54 Stephen Rothwell
2011-11-08  3:24 Stephen Rothwell
2011-11-01  8:16 Stephen Rothwell
2011-11-01 10:47 ` Tao Ma
2011-09-16  6:09 Stephen Rothwell
2011-08-15  4:52 Stephen Rothwell

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