linux-kernel - [PATCH 2/2] 2.6.19-rc2-mm1 pktcdvd: bio write congestion using blk_congestion

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Date:	Tue, 17 Oct 2006 21:49:48 +0200
From:	"Thomas Maier" <balagi@...tmail.de>
To:	linux-kernel@...r.kernel.org
Cc:	petero2@...ia.com, akpm@...l.org,
	"Jens Axboe" <jens.axboe@...cle.com>
Subject: [PATCH 2/2] 2.6.19-rc2-mm1 pktcdvd: bio write congestion using blk_congestion_wait()

Hello,

this adds a bio write queue congestion control
to the pktcdvd driver with fixed on/off marks.
It prevents that the driver consumes a unlimited
amount of write requests.

Needs this patch named:
[PATCH 1/2] 2.6.19-rc2-mm1 ll_rw_blk.c: export clear_queue_congested and set_queue_congested

I hope this code is ok now ;)
(Maybe the surrounding spin_locks can be removed,
but for atomic access to bio_write_size etc., they may
be a good thing...)

Signed-off-by: Thomas Maier <balagi@...tmail.de>


Download attachment "2-wqueue-congestion-2.6.19-rc2-mm1.patch" of type "application/octet-stream" (3555 bytes)