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From: Linus Torvalds <torvalds@linux-foundation.org>
To: David Howells <dhowells@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Casey Schaufler <casey@schaufler-ca.com>,
	Stephen Smalley <sds@tycho.nsa.gov>,
	Nicolas Dichtel <nicolas.dichtel@6wind.com>,
	Ian Kent <raven@themaw.net>,
	Christian Brauner <christian@brauner.io>,
	keyrings@vger.kernel.org, linux-usb@vger.kernel.org,
	linux-block <linux-block@vger.kernel.org>,
	LSM List <linux-security-module@vger.kernel.org>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	Linux API <linux-api@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH 00/14] pipe: Keyrings, Block and USB notifications [ver #3]
Date: Wed, 15 Jan 2020 12:10:32 -0800	[thread overview]
Message-ID: <CAHk-=wjrrOgznCy3yUmcmQY1z_7vXVr6GbvKiy8cLvWbxpmzcw@mail.gmail.com> (raw)
In-Reply-To: <157909503552.20155.3030058841911628518.stgit@warthog.procyon.org.uk>

So I no longer hate the implementation, but I do want to see the
actual user space users come out of the woodwork and try this out for
their use cases.

I'd hate to see a new event queue interface that people then can't
really use due to it not fulfilling their needs, or can't use for some
other reason.

We've had a fair number of kernel interfaces that ended up not being
used all that much, but had one or two minor users and ended up being
nasty long-term maintenance issues.. I don't want this to become yet
another such one.

                 Linus

WARNING: multiple messages have this Message-ID
From: Linus Torvalds <torvalds@linux-foundation.org>
To: David Howells <dhowells@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Casey Schaufler <casey@schaufler-ca.com>,
	Stephen Smalley <sds@tycho.nsa.gov>,
	Nicolas Dichtel <nicolas.dichtel@6wind.com>,
	Ian Kent <raven@themaw.net>,
	Christian Brauner <christian@brauner.io>,
	keyrings@vger.kernel.org, linux-usb@vger.kernel.org,
	linux-block <linux-block@vger.kernel.org>,
	LSM List <linux-security-module@vger.kernel.org>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	Linux API <linux-api@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH 00/14] pipe: Keyrings, Block and USB notifications [ver #3]
Date: Wed, 15 Jan 2020 20:10:32 +0000	[thread overview]
Message-ID: <CAHk-=wjrrOgznCy3yUmcmQY1z_7vXVr6GbvKiy8cLvWbxpmzcw@mail.gmail.com> (raw)
In-Reply-To: <157909503552.20155.3030058841911628518.stgit@warthog.procyon.org.uk>

So I no longer hate the implementation, but I do want to see the
actual user space users come out of the woodwork and try this out for
their use cases.

I'd hate to see a new event queue interface that people then can't
really use due to it not fulfilling their needs, or can't use for some
other reason.

We've had a fair number of kernel interfaces that ended up not being
used all that much, but had one or two minor users and ended up being
nasty long-term maintenance issues.. I don't want this to become yet
another such one.

                 Linus

  parent reply	other threads:[~2020-01-15 20:10 UTC|newest]

Thread overview: 110+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-15 13:30 David Howells
2020-01-15 13:30 ` David Howells
2020-01-15 13:30 ` David Howells
2020-01-15 13:30 ` [RFC PATCH 01/14] uapi: General notification queue definitions " David Howells
2020-01-15 13:30   ` David Howells
2020-01-15 13:30   ` David Howells
2020-01-15 13:30 ` [RFC PATCH 02/14] security: Add hooks to rule on setting a watch " David Howells
2020-01-15 13:30   ` David Howells
2020-01-15 13:30   ` David Howells
2020-01-15 13:31 ` [RFC PATCH 03/14] security: Add a hook for the point of notification insertion " David Howells
2020-01-15 13:31   ` David Howells
2020-01-15 13:31   ` David Howells
2020-01-15 13:31 ` [RFC PATCH 04/14] pipe: Add O_NOTIFICATION_PIPE " David Howells
2020-01-15 13:31   ` David Howells
2020-01-15 13:31   ` David Howells
2020-01-15 13:31 ` [RFC PATCH 05/14] pipe: Add general notification queue support " David Howells
2020-01-15 13:31   ` David Howells
2020-01-15 13:31   ` David Howells
2020-01-15 13:31 ` [RFC PATCH 06/14] keys: Add a notification facility " David Howells
2020-01-15 13:31   ` David Howells
2020-01-15 13:31   ` David Howells
2020-01-15 13:31 ` [RFC PATCH 07/14] Add sample notification program " David Howells
2020-01-15 13:31   ` David Howells
2020-01-15 13:31   ` David Howells
2020-01-26 15:47   ` Guenter Roeck
2020-01-26 15:47     ` Guenter Roeck
2020-01-26 15:47     ` Guenter Roeck
2020-01-15 13:31 ` [RFC PATCH 08/14] pipe: Allow buffers to be marked read-whole-or-error for notifications " David Howells
2020-01-15 13:31   ` David Howells
2020-01-15 13:31   ` David Howells
2020-01-15 13:31 ` [RFC PATCH 09/14] pipe: Add notification lossage handling " David Howells
2020-01-15 13:31   ` David Howells
2020-01-15 13:31   ` David Howells
2020-01-15 13:32 ` [RFC PATCH 10/14] Add a general, global device notification watch list " David Howells
2020-01-15 13:32   ` David Howells
2020-01-15 13:32   ` David Howells
2020-01-15 13:32 ` [RFC PATCH 11/14] block: Add block layer notifications " David Howells
2020-01-15 13:32   ` David Howells
2020-01-15 13:32   ` David Howells
2020-01-15 13:32 ` [RFC PATCH 12/14] usb: Add USB subsystem " David Howells
2020-01-15 13:32   ` David Howells
2020-01-15 13:32   ` David Howells
2020-01-15 13:32 ` [RFC PATCH 13/14] selinux: Implement the watch_key security hook " David Howells
2020-01-15 13:32   ` David Howells
2020-01-15 13:32   ` David Howells
2020-01-15 13:32 ` [RFC PATCH 14/14] smack: Implement the watch_key and post_notification hooks " David Howells
2020-01-15 13:32   ` David Howells
2020-01-15 13:32   ` David Howells
2020-01-15 20:10 ` Linus Torvalds [this message]
2020-01-15 20:10   ` [RFC PATCH 00/14] pipe: Keyrings, Block and USB notifications " Linus Torvalds
2020-02-11  0:56   ` Andres Freund
2020-02-11  0:56     ` Andres Freund
2020-01-15 21:07 ` David Howells
2020-01-15 21:07   ` David Howells
  -- strict thread matches above, loose matches on Subject: below --
2019-11-07 13:35 [RFC PATCH 00/14] pipe: Keyrings, Block and USB notifications [ver #2] David Howells
2019-11-07 13:35 ` David Howells
2019-11-07 13:35 ` David Howells
2019-11-07 13:35 ` [RFC PATCH 01/14] uapi: General notification queue definitions " David Howells
2019-11-07 13:35   ` David Howells
2019-11-07 13:35   ` David Howells
2019-11-07 13:35 ` [RFC PATCH 02/14] security: Add hooks to rule on setting a watch " David Howells
2019-11-07 13:35   ` David Howells
2019-11-07 13:35   ` David Howells
2019-11-07 13:35 ` [RFC PATCH 03/14] security: Add a hook for the point of notification insertion " David Howells
2019-11-07 13:35   ` David Howells
2019-11-07 13:35   ` David Howells
2019-11-07 13:35 ` [RFC PATCH 04/14] pipe: Add O_NOTIFICATION_PIPE " David Howells
2019-11-07 13:35   ` David Howells
2019-11-07 13:35   ` David Howells
2019-11-07 18:16   ` Andy Lutomirski
2019-11-07 18:16     ` Andy Lutomirski
2019-11-07 18:48   ` David Howells
2019-11-08  5:06     ` Andy Lutomirski
2019-11-08  5:06       ` Andy Lutomirski
2019-11-08  6:42     ` David Howells
2019-11-07 13:36 ` [RFC PATCH 05/14] pipe: Add general notification queue support " David Howells
2019-11-07 13:36   ` David Howells
2019-11-07 13:36   ` David Howells
2019-11-07 13:36 ` [RFC PATCH 06/14] keys: Add a notification facility " David Howells
2019-11-07 13:36   ` David Howells
2019-11-07 13:36   ` David Howells
2019-11-07 13:36 ` [RFC PATCH 07/14] Add sample notification program " David Howells
2019-11-07 13:36   ` David Howells
2019-11-07 13:36   ` David Howells
2019-11-07 13:36 ` [RFC PATCH 08/14] pipe: Allow buffers to be marked read-whole-or-error for notifications " David Howells
2019-11-07 13:36   ` David Howells
2019-11-07 13:36   ` David Howells
2019-11-07 18:15   ` Andy Lutomirski
2019-11-07 18:15     ` [RFC PATCH 08/14] pipe: Allow buffers to be marked read-whole-or-error for notifications [ver #2 Andy Lutomirski
2019-11-07 18:23   ` [RFC PATCH 08/14] pipe: Allow buffers to be marked read-whole-or-error for notifications [ver #2] David Howells
2019-11-07 18:23     ` [RFC PATCH 08/14] pipe: Allow buffers to be marked read-whole-or-error for notifications [ver #2 David Howells
2019-11-07 13:36 ` [RFC PATCH 09/14] pipe: Add notification lossage handling [ver #2] David Howells
2019-11-07 13:36   ` David Howells
2019-11-07 13:36   ` David Howells
2019-11-07 13:36 ` [RFC PATCH 10/14] Add a general, global device notification watch list " David Howells
2019-11-07 13:36   ` David Howells
2019-11-07 13:36   ` David Howells
2019-11-07 13:37 ` [RFC PATCH 11/14] block: Add block layer notifications " David Howells
2019-11-07 13:37   ` David Howells
2019-11-07 13:37   ` David Howells
2019-11-07 13:37 ` [RFC PATCH 12/14] usb: Add USB subsystem " David Howells
2019-11-07 13:37   ` David Howells
2019-11-07 13:37   ` David Howells
2019-11-07 13:37 ` [RFC PATCH 13/14] selinux: Implement the watch_key security hook " David Howells
2019-11-07 13:37   ` David Howells
2019-11-07 13:37   ` David Howells
2019-11-07 13:37 ` [RFC PATCH 14/14] smack: Implement the watch_key and post_notification hooks " David Howells
2019-11-07 13:37   ` David Howells
2019-11-07 13:37   ` David Howells
2019-11-07 17:16 ` [RFC PATCH 05/14] pipe: Add general notification queue support " David Howells

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