Re: Integration of SCST in the mainstream Linux kernel

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To: James Bottomley <James.Bottomley@...>

Cc: Bart Van Assche <bart.vanassche@...>, Linus Torvalds <torvalds@...>, Andrew Morton <akpm@...>, FUJITA Tomonori <fujita.tomonori@...>, <linux-scsi@...>, <scst-devel@...>, <linux-kernel@...>

Subject: Re: Integration of SCST in the mainstream Linux kernel

Date: Monday, February 4, 2008 - 12:25 pm

James Bottomley wrote:
quoted text>>Vladislav Bolkhovitin wrote:
>>So, James, what is your opinion on the above? Or the overall SCSI target 
>>project simplicity doesn't matter much for you and you think it's fine 
>>to duplicate Linux page cache in the user space to keep the in-kernel 
>>part of the project as small as possible?
> 
> 
> The answers were pretty much contained here
> 
> http://marc.info/?l=linux-scsi&m=120164008302435
> 
> and here:
> 
> http://marc.info/?l=linux-scsi&m=120171067107293
> 
> Weren't they?

No, sorry, it doesn't look so for me. They are about performance, but 
I'm asking about the overall project's architecture, namely about one 
part of it: simplicity. Particularly, what do you think about 
duplicating Linux page cache in the user space to have zero-copy cached 
I/O? Or can you suggest another architectural solution for that problem 
in the STGT's approach?

Vlad
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Messages in current thread:

Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Wed Jan 23, 10:22 am)

Re: Integration of SCST in the mainstream Linux kernel, Erez Zilber, (Tue Feb 5, 1:10 pm)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Tue Feb 5, 3:02 pm)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Tue Feb 5, 3:02 pm)

Re: Integration of SCST in the mainstream Linux kernel, James Bottomley, (Tue Jan 29, 4:42 pm)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Wed Jan 30, 7:17 am)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Mon Feb 4, 8:27 am)

Re: Integration of SCST in the mainstream Linux kernel, James Bottomley, (Mon Feb 4, 11:30 am)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Mon Feb 4, 12:25 pm)

Re: Integration of SCST in the mainstream Linux kernel, James Bottomley, (Mon Feb 4, 1:06 pm)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Mon Feb 4, 1:16 pm)

Re: Integration of SCST in the mainstream Linux kernel, James Bottomley, (Mon Feb 4, 1:25 pm)

Re: Integration of SCST in the mainstream Linux kernel, Linus Torvalds, (Mon Feb 4, 2:29 pm)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Mon Feb 4, 3:06 pm)

Re: Integration of SCST in the mainstream Linux kernel, Linus Torvalds, (Mon Feb 4, 3:44 pm)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Tue Feb 5, 3:00 pm)

Re: Integration of SCST in the mainstream Linux kernel, Alan Cox, (Mon Feb 4, 6:43 pm)

Re: Integration of SCST in the mainstream Linux kernel, Matt Mackall, (Mon Feb 4, 8:07 pm)

Re: Integration of SCST in the mainstream Linux kernel, Linus Torvalds, (Mon Feb 4, 8:24 pm)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Matteo Tescione, (Tue Feb 5, 12:43 am)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., FUJITA Tomonori, (Tue Feb 5, 9:38 am)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., James Bottomley, (Tue Feb 5, 1:07 am)

Re: Integration of SCST in the mainstream Linux kernel, Matt Mackall, (Mon Feb 4, 8:45 pm)

Re: Integration of SCST in the mainstream Linux kernel, Jeff Garzik, (Mon Feb 4, 8:42 pm)

Re: Integration of SCST in the mainstream Linux kernel, Douglas Gilbert, (Mon Feb 4, 1:30 pm)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Chris Weiss, (Mon Feb 4, 10:07 pm)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., FUJITA Tomonori, (Tue Feb 5, 10:19 am)

Re: Integration of SCST in the mainstream Linux kernel, Jeff Garzik, (Mon Feb 4, 7:04 pm)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Tue Feb 5, 3:01 pm)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Tue Feb 5, 8:48 pm)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Tue Feb 5, 8:51 pm)

Re: Integration of SCST in the mainstream Linux kernel, Jeff Garzik, (Tue Feb 5, 3:12 pm)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Tue Feb 5, 8:17 pm)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Tue Feb 5, 3:21 pm)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Tue Feb 5, 8:11 pm)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Bart Van Assche, (Tue Feb 12, 12:05 pm)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Nicholas A. Bellinger, (Tue Feb 12, 11:44 pm)

CONFIG_SLUB and reproducable general protection faults on 2...., Nicholas A. Bellinger, (Wed Feb 13, 2:18 am)

Re: CONFIG_SLUB and reproducable general protection faults o..., Nicholas A. Bellinger, (Wed Feb 13, 12:37 pm)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Tue Feb 5, 9:43 pm)

Re: Integration of SCST in the mainstream Linux kernel, Linus Torvalds, (Mon Feb 4, 7:27 pm)

Re: Integration of SCST in the mainstream Linux kernel, James Bottomley, (Mon Feb 4, 7:00 pm)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Mon Feb 4, 7:12 pm)

Re: Integration of SCST in the mainstream Linux kernel, James Bottomley, (Tue Feb 5, 2:37 pm)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Mon Feb 4, 7:16 pm)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Mon Feb 4, 6:59 pm)

Re: Integration of SCST in the mainstream Linux kernel, J. Bruce Fields, (Mon Feb 4, 5:01 pm)

Re: Integration of SCST in the mainstream Linux kernel, Linus Torvalds, (Mon Feb 4, 5:24 pm)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Tue Feb 5, 3:01 pm)

Re: Integration of SCST in the mainstream Linux kernel, Jeff Garzik, (Mon Feb 4, 6:57 pm)

Re: Integration of SCST in the mainstream Linux kernel, Olivier Galibert, (Tue Feb 5, 9:05 am)

Re: Integration of SCST in the mainstream Linux kernel, Jeff Garzik, (Tue Feb 5, 2:08 pm)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Tue Feb 5, 4:38 am)

Re: Integration of SCST in the mainstream Linux kernel, Jeff Garzik, (Tue Feb 5, 1:50 pm)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Wed Feb 6, 6:22 am)

Re: Integration of SCST in the mainstream Linux kernel, Jeff Garzik, (Wed Feb 6, 10:21 am)

Re: Integration of SCST in the mainstream Linux kernel, Linus Torvalds, (Mon Feb 4, 7:45 pm)

Re: Integration of SCST in the mainstream Linux kernel, Jeff Garzik, (Mon Feb 4, 8:08 pm)

Re: Integration of SCST in the mainstream Linux kernel, Linus Torvalds, (Mon Feb 4, 9:20 pm)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Mon Feb 4, 6:00 pm)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Mon Feb 4, 4:24 pm)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., , (Mon Feb 4, 4:06 pm)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Mon Feb 4, 3:19 pm)

Re: Integration of SCST in the mainstream Linux kernel, James Bottomley, (Mon Feb 4, 2:49 pm)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Mon Feb 4, 1:56 pm)

Re: Integration of SCST in the mainstream Linux kernel, James Bottomley, (Mon Feb 4, 2:22 pm)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Mon Feb 4, 2:38 pm)

Re: Integration of SCST in the mainstream Linux kernel, James Bottomley, (Mon Feb 4, 2:54 pm)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Tue Feb 5, 2:59 pm)

Re: Integration of SCST in the mainstream Linux kernel, James Bottomley, (Tue Feb 5, 3:13 pm)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Bart Van Assche, (Thu Feb 7, 9:13 am)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Nicholas A. Bellinger, (Thu Feb 7, 11:38 am)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Luben Tuikov, (Thu Feb 7, 4:37 pm)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Nicholas A. Bellinger, (Fri Feb 8, 7:53 am)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Fri Feb 8, 10:42 am)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Fri Feb 8, 8:00 pm)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Fri Feb 8, 6:32 am)

Re: Integration of SCST in the mainstream Linux kernel, Luben Tuikov, (Sat Feb 9, 3:32 am)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Mon Feb 11, 6:02 am)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Thu Feb 7, 9:45 am)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Fri Feb 15, 11:02 am)

Re: Integration of SCST in the mainstream Linux kernel, , (Thu Feb 7, 6:51 pm)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Fri Feb 8, 7:33 am)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Fri Feb 8, 10:36 am)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Fri Feb 8, 7:53 pm)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Fri Feb 8, 6:37 am)

Re: Integration of SCST in the mainstream Linux kernel, , (Sat Feb 9, 3:40 am)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Wed Feb 6, 2:07 pm)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Mon Feb 4, 9:53 am)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Tue Feb 5, 12:25 pm)

Re: Integration of SCST in the mainstream Linux kernel, Linus Torvalds, (Tue Feb 5, 2:18 pm)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Mon Feb 4, 1:08 pm)

Re: Integration of SCST in the mainstream Linux kernel, David Dillow, (Mon Feb 4, 1:00 pm)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Wed Jan 30, 4:29 am)

Re: Integration of SCST in the mainstream Linux kernel, James Bottomley, (Wed Jan 30, 12:22 pm)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Tomasz Chmielewski, (Tue Feb 5, 3:14 am)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., FUJITA Tomonori, (Tue Feb 5, 9:38 am)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Matteo Tescione, (Tue Feb 5, 1:09 pm)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., FUJITA Tomonori, (Tue Feb 5, 9:29 pm)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Nicholas A. Bellinger, (Tue Feb 5, 10:01 pm)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Tomasz Chmielewski, (Tue Feb 5, 12:07 pm)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., FUJITA Tomonori, (Tue Feb 5, 12:43 pm)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Ming Zhang, (Tue Feb 5, 12:21 pm)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Wed Jan 30, 1:03 pm)

Re: Integration of SCST in the mainstream Linux kernel, Roland Dreier, (Tue Jan 29, 5:31 pm)

Re: Integration of SCST in the mainstream Linux kernel, FUJITA Tomonori, (Tue Jan 29, 7:32 pm)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Wed Jan 30, 7:18 am)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Wed Jan 30, 4:38 am)

Re: Integration of SCST in the mainstream Linux kernel, Erez Zilber, (Tue Feb 5, 1:01 pm)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Wed Feb 6, 8:16 am)

Re: Integration of SCST in the mainstream Linux kernel, Erez Zilber, (Mon Feb 18, 5:43 am)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Mon Feb 18, 7:01 am)

Re: Integration of SCST in the mainstream Linux kernel, Erez Zilber, (Wed Feb 20, 3:34 am)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Wed Feb 20, 4:41 am)

Re: Integration of SCST in the mainstream Linux kernel, Roland Dreier, (Wed Feb 6, 1:06 pm)

Re: Integration of SCST in the mainstream Linux kernel, Benny Halevy, (Wed Feb 6, 12:45 pm)

Re: Integration of SCST in the mainstream Linux kernel, James Bottomley, (Wed Jan 30, 12:34 pm)

Re: Integration of SCST in the mainstream Linux kernel, Pete Wyckoff, (Sat Feb 2, 11:32 am)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Wed Jan 30, 12:50 pm)

Re: Integration of SCST in the mainstream Linux kernel, FUJITA Tomonori, (Wed Jan 30, 6:56 am)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Thu Jan 31, 9:25 am)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Fri Feb 1, 4:11 am)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Fri Feb 1, 6:39 am)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Fri Feb 1, 7:04 am)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Fri Feb 1, 8:05 am)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Fri Feb 1, 9:25 am)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Fri Feb 1, 10:36 am)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Thu Jan 31, 10:34 am)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Thu Jan 31, 11:50 am)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Thu Jan 31, 1:14 pm)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Thu Jan 31, 1:40 pm)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Thu Jan 31, 2:15 pm)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Fri Feb 1, 5:08 am)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Joe Landman, (Thu Jan 31, 12:25 pm)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Bart Van Assche, (Thu Jan 31, 1:08 pm)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Vladislav Bolkhovitin, (Fri Feb 1, 7:50 am)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Vladislav Bolkhovitin, (Fri Feb 1, 8:25 am)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., David Dillow, (Thu Jan 31, 2:12 pm)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Vladislav Bolkhovitin, (Fri Feb 1, 7:50 am)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Joe Landman, (Thu Jan 31, 1:13 pm)

Re: Integration of SCST in the mainstream Linux kernel, Nicholas A. Bellinger, (Thu Jan 31, 10:44 am)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Wed Jan 30, 9:10 am)

Re: Integration of SCST in the mainstream Linux kernel, FUJITA Tomonori, (Wed Jan 30, 9:54 am)

Re: Integration of SCST in the mainstream Linux kernel, Bart Van Assche, (Thu Jan 31, 3:48 am)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Wed Jan 30, 7:40 am)

Re: [Scst-devel] Integration of SCST in the mainstream Linux..., Vu Pham, (Tue Jan 29, 9:15 pm)

Re: Integration of SCST in the mainstream Linux kernel, Vladislav Bolkhovitin, (Wed Jan 23, 1:11 pm)

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