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From: Boaz Harrosh <bharrosh@panasas.com>
To: Jeff Garzik <jeff@garzik.org>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>,
	Matthew Wilcox <matthew@wil.cx>,
	Jens Axboe <jens.axboe@oracle.com>,
	Hugh Dickins <hugh@veritas.com>,
	Matthew Wilcox <willy@linux.intel.com>,
	linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-scsi@vger.kernel.org,
	Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>,
	Mark Lord <lkml@rtr.ca>
Subject: Re: New TRIM/UNMAP tree published (2009-05-02)
Date: Mon, 04 May 2009 18:28:07 +0300	[thread overview]
Message-ID: <49FF0987.8040608@panasas.com> (raw)
In-Reply-To: <49FE1EFF.2050406@garzik.org>

On 05/04/2009 01:47 AM, Jeff Garzik wrote:
> James Bottomley wrote:
>> The ideal for REQ_TYPE_DISCARD seems to be to force a page allocation
>> tied to a bio when it's issued at the top.  That way everyone has enough
>> memory when it comes down the stack (both extents and WRITE SAME sector
>> will fit into a page ... although only just for WRITE SAME on 4k
>> sectors).
> 
> Makes sense...
> 
> 	Jeff
> 

I second that, let the allocator of the request supply a buffer and free it
on return/done. Perhaps with a general helper that does all that.

Boaz

  reply	other threads:[~2009-05-04 15:28 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-02 14:37 [PATCH 1/5] Block: Discard may need to allocate pages Matthew Wilcox
2009-04-02 14:37 ` [PATCH 2/5] Make DISCARD_BARRIER and DISCARD_NOBARRIER writes instead of reads Matthew Wilcox
2009-04-02 14:37   ` [PATCH 3/5] ata: Add TRIM infrastructure Matthew Wilcox
2009-04-02 14:37     ` [PATCH 4/5] ide: Add support for TRIM Matthew Wilcox
2009-04-02 14:37       ` [PATCH 5/5] libata: " Matthew Wilcox
2009-04-02 17:20         ` Mark Lord
2009-04-02 17:55           ` Matthew Wilcox
2009-04-16 20:25         ` Mark Lord
2009-04-17 19:44           ` Mark Lord
2009-04-02 15:58       ` [PATCH 4/5] ide: " Sergei Shtylyov
2009-04-02 16:28         ` Matthew Wilcox
2009-04-02 16:38           ` Sergei Shtylyov
2009-04-02 16:51             ` Matthew Wilcox
2009-04-02 19:37               ` Bartlomiej Zolnierkiewicz
2009-04-07 21:38                 ` Bartlomiej Zolnierkiewicz
2009-04-07 22:15                   ` Matthew Wilcox
2009-04-07 22:26                     ` Jeff Garzik
2009-04-07 22:35                     ` Bartlomiej Zolnierkiewicz
2009-04-07 17:20       ` Jeff Garzik
2009-04-07 17:57         ` Mark Lord
2009-04-07 18:10           ` Markus Trippelsdorf
2009-04-07 19:58             ` Mark Lord
2009-04-08  7:14               ` Markus Trippelsdorf
2009-04-08 14:25                 ` Mark Lord
2009-04-08 14:33       ` Mark Lord
2009-04-08 14:44         ` Dongjun Shin
2009-04-08 14:59         ` Jeff Garzik
2009-04-08 15:50           ` Mark Lord
2009-04-02 15:55     ` [PATCH 3/5] ata: Add TRIM infrastructure Sergei Shtylyov
2009-04-02 16:18       ` Matthew Wilcox
2009-04-02 16:32         ` Sergei Shtylyov
2009-04-02 16:47           ` Matthew Wilcox
2009-04-07  0:02     ` Jeff Garzik
2009-04-05 12:28 ` [PATCH 1/5] Block: Discard may need to allocate pages Boaz Harrosh
2009-04-06 20:34   ` Matthew Wilcox
2009-05-03  6:11   ` Matthew Wilcox
2009-05-03  7:16     ` New TRIM/UNMAP tree published (2009-05-02) Matthew Wilcox
2009-05-03 13:07       ` Hugh Dickins
2009-05-03 14:48         ` Matthew Wilcox
2009-05-03 15:02           ` Boaz Harrosh
2009-05-03 15:42             ` Matthew Wilcox
2009-05-03 16:34               ` Boaz Harrosh
2009-05-03 18:34                 ` Jeff Garzik
2009-05-03 18:40                   ` Jeff Garzik
2009-05-03 19:04                     ` James Bottomley
2009-05-03 19:20                       ` Jeff Garzik
2009-05-03 19:37                         ` James Bottomley
2009-05-04 14:03                           ` Douglas Gilbert
2009-05-04 14:40                             ` James Bottomley
2009-05-04 15:11                               ` Douglas Gilbert
2009-05-04 15:23                                 ` James Bottomley
2009-05-03 19:47                         ` James Bottomley
2009-05-03 22:47                           ` Jeff Garzik
2009-05-04 15:28                             ` Boaz Harrosh [this message]
2009-05-03 21:48                   ` Matthew Wilcox
2009-05-03 22:54                     ` Jeff Garzik
2009-05-03 18:48               ` Bartlomiej Zolnierkiewicz
2009-05-03 15:05           ` Hugh Dickins
2009-04-17 21:23 ` [PATCH 1/5] Block: Discard may need to allocate pages Mark Lord

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