From: Nick Piggin <piggin@cyberone.com.au>
To: Jens Axboe <axboe@suse.de>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: queue reference counting
Date: Thu, 07 Aug 2003 19:20:28 +1000 [thread overview]
Message-ID: <3F3219DC.4070608@cyberone.com.au> (raw)
In-Reply-To: <20030807080251.GY7982@suse.de>
Jens Axboe wrote:
>On Thu, Aug 07 2003, Pavel Machek wrote:
>
>>Hi!
>>
>>
>>>I ported `subj` to 2.6.0-test2. I do not yet have idea if it works,
>>>but it compiles ;-).
>>>
>>It compiles, it event boots, but it does not seem to have much effect
>>:-(.
>>
>
>Now that the queue reference counting is in the current bk tree, we are
>that much closer to real modular io schedulers. I'll post the cfq with
>priorities for that.
>
OK, the QUEUE_FLAG_DEAD. I assume that will be set in blk_cleanup_queue?
Then all remaining requests are flushed out of the queue?
This requires that a driver must be able to continue to process requests
during the call to blk_cleanup_queue, and that blk_cleanup_queue might
block, right? Is this acceptable, or should there be an earlier call to
set QUEUE_FLAG_DEAD and ensure queue is flushed?
next prev parent reply other threads:[~2003-08-07 9:20 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-06 23:28 Disk priority dependend on nice level Pavel Machek
2003-08-06 23:40 ` Pavel Machek
2003-08-07 8:02 ` Jens Axboe
2003-08-07 9:20 ` Nick Piggin [this message]
2003-08-07 9:22 ` queue reference counting Jens Axboe
2003-08-07 9:26 ` Nick Piggin
2003-08-07 10:04 ` Disk priority dependend on nice level Pavel Machek
2003-08-07 10:09 ` Jens Axboe
2003-08-07 5:57 ` Jens Axboe
2003-08-07 10:01 ` Pavel Machek
2003-08-07 10:09 ` Jens Axboe
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