From: Ingo Molnar <mingo@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Benjamin LaHaise <bcrl@kvack.org>,
linux-aio@kvack.org,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux API <linux-api@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 09/13] aio: add support for async openat()
Date: Tue, 12 Jan 2016 10:53:19 +0100 [thread overview]
Message-ID: <20160112095319.GA20597@gmail.com> (raw)
In-Reply-To: <CA+55aFw8j_3Vkb=HVoMwWTPD=5ve8RpNZeL31CcKQZ+HRSbfTA@mail.gmail.com>
* Linus Torvalds <torvalds@linux-foundation.org> wrote:
> What do you think? Do you think it might be possible to aim for a generic "do
> system call asynchronously" model instead?
>
> I'm adding Ingo the to cc, because I think Ingo had a "run this list of system
> calls" patch at one point - in order to avoid system call overhead. I don't
> think that was very interesting (because system call overhead is seldom all that
> noticeable for any interesting system calls), but with the "let's do the list
> asynchronously" addition it might be much more intriguing. Ingo, do I remember
> correctly that it was you? I might be confused about who wrote that patch, and I
> can't find it now.
Yeah, it was the whole 'syslets' and 'threadlets' stuff - I had both implemented
and prototyped into a 'list directory entries asynchronously' testcase.
Threadlets was pretty close to what you are suggesting now. Here's a very good (as
usual!) writeup from LWN:
https://lwn.net/Articles/223899/
Thanks,
Ingo
WARNING: multiple messages have this Message-ID (diff)
From: Ingo Molnar <mingo@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Benjamin LaHaise <bcrl@kvack.org>,
linux-aio@kvack.org,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux API <linux-api@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 09/13] aio: add support for async openat()
Date: Tue, 12 Jan 2016 10:53:19 +0100 [thread overview]
Message-ID: <20160112095319.GA20597@gmail.com> (raw)
In-Reply-To: <CA+55aFw8j_3Vkb=HVoMwWTPD=5ve8RpNZeL31CcKQZ+HRSbfTA@mail.gmail.com>
* Linus Torvalds <torvalds@linux-foundation.org> wrote:
> What do you think? Do you think it might be possible to aim for a generic "do
> system call asynchronously" model instead?
>
> I'm adding Ingo the to cc, because I think Ingo had a "run this list of system
> calls" patch at one point - in order to avoid system call overhead. I don't
> think that was very interesting (because system call overhead is seldom all that
> noticeable for any interesting system calls), but with the "let's do the list
> asynchronously" addition it might be much more intriguing. Ingo, do I remember
> correctly that it was you? I might be confused about who wrote that patch, and I
> can't find it now.
Yeah, it was the whole 'syslets' and 'threadlets' stuff - I had both implemented
and prototyped into a 'list directory entries asynchronously' testcase.
Threadlets was pretty close to what you are suggesting now. Here's a very good (as
usual!) writeup from LWN:
https://lwn.net/Articles/223899/
Thanks,
Ingo
--
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WARNING: multiple messages have this Message-ID (diff)
From: Ingo Molnar <mingo@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Benjamin LaHaise <bcrl@kvack.org>,
linux-aio@kvack.org,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux API <linux-api@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 09/13] aio: add support for async openat()
Date: Tue, 12 Jan 2016 10:53:19 +0100 [thread overview]
Message-ID: <20160112095319.GA20597@gmail.com> (raw)
In-Reply-To: <CA+55aFw8j_3Vkb=HVoMwWTPD=5ve8RpNZeL31CcKQZ+HRSbfTA@mail.gmail.com>
* Linus Torvalds <torvalds@linux-foundation.org> wrote:
> What do you think? Do you think it might be possible to aim for a generic "do
> system call asynchronously" model instead?
>
> I'm adding Ingo the to cc, because I think Ingo had a "run this list of system
> calls" patch at one point - in order to avoid system call overhead. I don't
> think that was very interesting (because system call overhead is seldom all that
> noticeable for any interesting system calls), but with the "let's do the list
> asynchronously" addition it might be much more intriguing. Ingo, do I remember
> correctly that it was you? I might be confused about who wrote that patch, and I
> can't find it now.
Yeah, it was the whole 'syslets' and 'threadlets' stuff - I had both implemented
and prototyped into a 'list directory entries asynchronously' testcase.
Threadlets was pretty close to what you are suggesting now. Here's a very good (as
usual!) writeup from LWN:
https://lwn.net/Articles/223899/
Thanks,
Ingo
--
To unsubscribe, send a message with 'unsubscribe linux-aio' in
the body to majordomo@kvack.org. For more info on Linux AIO,
see: http://www.kvack.org/aio/
Don't email: <a href=mailto:"aart@kvack.org">aart@kvack.org</a>
next prev parent reply other threads:[~2016-01-12 9:53 UTC|newest]
Thread overview: 133+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-11 22:06 [PATCH 00/13] aio: thread (work queue) based aio and new aio functionality Benjamin LaHaise
2016-01-11 22:06 ` Benjamin LaHaise
2016-01-11 22:06 ` [PATCH 01/13] signals: distinguish signals sent due to i/o via io_send_sig() Benjamin LaHaise
2016-01-11 22:06 ` Benjamin LaHaise
2016-01-11 22:06 ` Benjamin LaHaise
2016-01-11 22:06 ` [PATCH 02/13] aio: add aio_get_mm() helper Benjamin LaHaise
2016-01-11 22:06 ` Benjamin LaHaise
2016-01-11 22:06 ` Benjamin LaHaise
2016-01-11 22:06 ` [PATCH 03/13] aio: for async operations, make the iter argument persistent Benjamin LaHaise
2016-01-11 22:06 ` Benjamin LaHaise
2016-01-11 22:06 ` Benjamin LaHaise
2016-01-11 22:07 ` [PATCH 04/13] signals: add and use aio_get_task() to direct signals sent via io_send_sig() Benjamin LaHaise
2016-01-11 22:07 ` Benjamin LaHaise
2016-01-11 22:07 ` Benjamin LaHaise
2016-01-11 22:07 ` [PATCH 05/13] fs: make do_loop_readv_writev() non-static Benjamin LaHaise
2016-01-11 22:07 ` Benjamin LaHaise
2016-01-11 22:07 ` Benjamin LaHaise
2016-01-11 22:07 ` [PATCH 06/13] aio: add queue_work() based threaded aio support Benjamin LaHaise
2016-01-11 22:07 ` Benjamin LaHaise
2016-01-11 22:07 ` Benjamin LaHaise
2016-01-11 22:07 ` [PATCH 07/13] aio: enabled thread based async fsync Benjamin LaHaise
2016-01-11 22:07 ` Benjamin LaHaise
2016-01-11 22:07 ` Benjamin LaHaise
2016-01-12 1:11 ` Dave Chinner
2016-01-12 1:11 ` Dave Chinner
2016-01-12 1:20 ` Linus Torvalds
2016-01-12 1:20 ` Linus Torvalds
2016-01-12 2:25 ` Dave Chinner
2016-01-12 2:25 ` Dave Chinner
2016-01-12 2:25 ` Dave Chinner
2016-01-12 2:38 ` Linus Torvalds
2016-01-12 2:38 ` Linus Torvalds
2016-01-12 3:37 ` Dave Chinner
2016-01-12 3:37 ` Dave Chinner
2016-01-12 4:03 ` Linus Torvalds
2016-01-12 4:03 ` Linus Torvalds
2016-01-12 4:48 ` Linus Torvalds
2016-01-12 4:48 ` Linus Torvalds
2016-01-12 22:50 ` Benjamin LaHaise
2016-01-12 22:50 ` Benjamin LaHaise
2016-01-12 22:50 ` Benjamin LaHaise
2016-01-15 20:21 ` Benjamin LaHaise
2016-01-15 20:21 ` Benjamin LaHaise
2016-01-15 20:21 ` Benjamin LaHaise
2016-01-20 3:59 ` Linus Torvalds
2016-01-20 3:59 ` Linus Torvalds
2016-01-20 3:59 ` Linus Torvalds
2016-01-20 5:02 ` Theodore Ts'o
2016-01-20 5:02 ` Theodore Ts'o
2016-01-20 5:02 ` Theodore Ts'o
2016-01-20 19:59 ` Dave Chinner
2016-01-20 19:59 ` Dave Chinner
2016-01-20 19:59 ` Dave Chinner
2016-01-20 20:29 ` Linus Torvalds
2016-01-20 20:29 ` Linus Torvalds
2016-01-20 20:44 ` Benjamin LaHaise
2016-01-20 20:44 ` Benjamin LaHaise
2016-01-20 20:44 ` Benjamin LaHaise
2016-01-20 21:45 ` Dave Chinner
2016-01-20 21:45 ` Dave Chinner
2016-01-20 21:56 ` Benjamin LaHaise
2016-01-20 21:56 ` Benjamin LaHaise
2016-01-20 21:56 ` Benjamin LaHaise
2016-01-23 4:24 ` Dave Chinner
2016-01-23 4:24 ` Dave Chinner
2016-01-23 4:50 ` Benjamin LaHaise
2016-01-23 4:50 ` Benjamin LaHaise
2016-01-23 4:50 ` Benjamin LaHaise
2016-01-23 22:22 ` Dave Chinner
2016-01-23 22:22 ` Dave Chinner
2016-01-23 22:22 ` Dave Chinner
2016-01-20 23:07 ` Linus Torvalds
2016-01-23 4:39 ` Dave Chinner
2016-01-23 4:39 ` Dave Chinner
2016-01-23 4:39 ` Dave Chinner
2016-03-14 17:17 ` aio openat " Benjamin LaHaise
2016-03-14 17:17 ` Benjamin LaHaise
2016-03-20 1:20 ` Linus Torvalds
2016-03-20 1:20 ` Linus Torvalds
2016-03-20 1:26 ` Al Viro
2016-03-20 1:26 ` Al Viro
2016-03-20 1:26 ` Al Viro
2016-03-20 1:45 ` Linus Torvalds
2016-03-20 1:45 ` Linus Torvalds
2016-03-20 1:45 ` Linus Torvalds
2016-03-20 1:55 ` Al Viro
2016-03-20 1:55 ` Al Viro
2016-03-20 2:03 ` Linus Torvalds
2016-03-20 2:03 ` Linus Torvalds
2016-03-20 2:03 ` Linus Torvalds
2016-01-20 21:57 ` Dave Chinner
2016-01-20 21:57 ` Dave Chinner
2016-01-20 21:57 ` Dave Chinner
2016-01-22 15:41 ` Andres Freund
2016-01-22 15:41 ` Andres Freund
2016-01-12 22:59 ` Andy Lutomirski
2016-01-12 22:59 ` Andy Lutomirski
2016-01-12 22:59 ` Andy Lutomirski
2016-01-14 9:19 ` Paolo Bonzini
2016-01-14 9:19 ` Paolo Bonzini
2016-01-14 9:19 ` Paolo Bonzini
2016-01-12 1:30 ` Benjamin LaHaise
2016-01-12 1:30 ` Benjamin LaHaise
2016-01-12 1:30 ` Benjamin LaHaise
2016-01-22 15:31 ` Andres Freund
2016-01-22 15:31 ` Andres Freund
2016-01-22 15:31 ` Andres Freund
2016-01-11 22:07 ` [PATCH 08/13] aio: add support for aio poll via aio thread helper Benjamin LaHaise
2016-01-11 22:07 ` Benjamin LaHaise
2016-01-11 22:07 ` [PATCH 09/13] aio: add support for async openat() Benjamin LaHaise
2016-01-11 22:07 ` Benjamin LaHaise
2016-01-11 22:07 ` Benjamin LaHaise
2016-01-12 0:22 ` Linus Torvalds
2016-01-12 0:22 ` Linus Torvalds
2016-01-12 1:17 ` Benjamin LaHaise
2016-01-12 1:17 ` Benjamin LaHaise
2016-01-12 1:17 ` Benjamin LaHaise
2016-01-12 1:45 ` Chris Mason
2016-01-12 1:45 ` Chris Mason
2016-01-12 1:45 ` Chris Mason
2016-01-12 9:53 ` Ingo Molnar [this message]
2016-01-12 9:53 ` Ingo Molnar
2016-01-12 9:53 ` Ingo Molnar
2016-01-11 22:07 ` [PATCH 10/13] aio: add async unlinkat functionality Benjamin LaHaise
2016-01-11 22:07 ` Benjamin LaHaise
2016-01-11 22:07 ` Benjamin LaHaise
2016-01-11 22:07 ` [PATCH 11/13] mm: enable __do_page_cache_readahead() to include present pages Benjamin LaHaise
2016-01-11 22:07 ` Benjamin LaHaise
2016-01-11 22:07 ` [PATCH 12/13] aio: add support for aio readahead Benjamin LaHaise
2016-01-11 22:07 ` Benjamin LaHaise
2016-01-11 22:08 ` [PATCH 13/13] aio: add support for aio renameat operation Benjamin LaHaise
2016-01-11 22:08 ` Benjamin LaHaise
2016-01-11 22:08 ` Benjamin LaHaise
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