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From: Rick Lindsley <ricklind@linux.vnet.ibm.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Tejun Heo <tj@kernel.org>, Ian Kent <raven@themaw.net>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>,
	Andrew Morton <akpm@linux-foundation.org>,
	Al Viro <viro@zeniv.linux.org.uk>,
	David Howells <dhowells@redhat.com>,
	Miklos Szeredi <miklos@szeredi.hu>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 0/6] kernfs: proposed locking and concurrency improvement
Date: Mon, 22 Jun 2020 14:27:38 -0700	[thread overview]
Message-ID: <f9106e08-069d-1e58-96b1-6c63d2c62c16@linux.vnet.ibm.com> (raw)
In-Reply-To: <20200622180306.GA1917323@kroah.com>


On Mon, Jun 22, 2020 at 01:48:45PM -0400, Tejun Heo wrote:

> It should be obvious that representing each consecutive memory range with a
> separate directory entry is far from an optimal way of representing
> something like this. It's outright silly.

On 6/22/20 11:03 AM, Greg Kroah-Hartman wrote:

> I agree.  And again, Ian, you are just "kicking the problem down the
> road" if we accept these patches.  Please fix this up properly so that
> this interface is correctly fixed to not do looney things like this.

Given that we cannot change the underlying machine representation of this hardware, what do you (all, not just you Greg) consider to be "properly"?

Rick


  reply	other threads:[~2020-06-22 21:27 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-17  7:37 [PATCH v2 0/6] kernfs: proposed locking and concurrency improvement Ian Kent
2020-06-17  7:37 ` [PATCH v2 1/6] kernfs: switch kernfs to use an rwsem Ian Kent
2020-06-17  7:37 ` [PATCH v2 2/6] kernfs: move revalidate to be near lookup Ian Kent
2020-06-17  7:37 ` [PATCH v2 3/6] kernfs: improve kernfs path resolution Ian Kent
2020-06-17  7:38 ` [PATCH v2 4/6] kernfs: use revision to identify directory node changes Ian Kent
2020-06-17  7:38 ` [PATCH v2 5/6] kernfs: refactor attr locking Ian Kent
2020-06-17  7:38 ` [PATCH v2 6/6] kernfs: make attr_mutex a local kernfs node lock Ian Kent
2020-06-19 15:38 ` [PATCH v2 0/6] kernfs: proposed locking and concurrency improvement Tejun Heo
2020-06-19 20:41   ` Rick Lindsley
2020-06-19 22:23     ` Tejun Heo
2020-06-20  2:44       ` Rick Lindsley
2020-06-22 17:53         ` Tejun Heo
2020-06-22 21:22           ` Rick Lindsley
2020-06-23 23:13             ` Tejun Heo
2020-06-24  9:04               ` Rick Lindsley
2020-06-24  9:27                 ` Greg Kroah-Hartman
2020-06-24 13:19                 ` Tejun Heo
2020-06-25  8:15               ` Ian Kent
2020-06-25  9:43                 ` Greg Kroah-Hartman
2020-06-26  0:19                   ` Ian Kent
2020-06-21  4:55       ` Ian Kent
2020-06-22 17:48         ` Tejun Heo
2020-06-22 18:03           ` Greg Kroah-Hartman
2020-06-22 21:27             ` Rick Lindsley [this message]
2020-06-23  5:21               ` Greg Kroah-Hartman
2020-06-23  5:09             ` Ian Kent
2020-06-23  6:02               ` Greg Kroah-Hartman
2020-06-23  8:01                 ` Ian Kent
2020-06-23  8:29                   ` Ian Kent
2020-06-23 11:49                   ` Greg Kroah-Hartman
2020-06-23  9:33                 ` Rick Lindsley
2020-06-23 11:45                   ` Greg Kroah-Hartman
2020-06-23 22:55                     ` Rick Lindsley
2020-06-23 11:51                   ` Ian Kent
2020-06-21  3:21   ` Ian Kent
2020-12-10 16:44 ` Fox Chen
2020-12-11  2:01   ` [PATCH " Ian Kent
2020-12-11  2:17     ` Ian Kent
2020-12-13  3:46       ` Ian Kent
2020-12-14  6:14         ` Fox Chen
2020-12-14 13:30           ` Ian Kent
2020-12-15  8:33             ` Fox Chen
2020-12-15 12:59               ` Ian Kent
2020-12-17  4:46                 ` Ian Kent
2020-12-17  8:54                   ` Fox Chen
2020-12-17 10:09                     ` Ian Kent
2020-12-17 11:09                       ` Ian Kent
2020-12-17 11:48                         ` Ian Kent
2020-12-17 15:14                           ` Tejun Heo
2020-12-18  7:36                             ` Ian Kent
2020-12-18  8:01                               ` Fox Chen
2020-12-18 11:21                                 ` Ian Kent
2020-12-18 13:20                                   ` Fox Chen
2020-12-19  0:53                                     ` Ian Kent
2020-12-19  7:47                                       ` Fox Chen
2020-12-22  2:17                                         ` Ian Kent
2020-12-18 14:59                               ` Tejun Heo
2020-12-19  7:08                                 ` Ian Kent
2020-12-19 16:23                                   ` Tejun Heo
2020-12-19 23:52                                     ` Ian Kent
2020-12-20  1:37                                       ` Ian Kent
2020-12-21  9:28                                       ` Fox Chen

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