From: James Smart <James.Smart@Emulex.Com>
To: linux-scsi <linux-scsi@vger.kernel.org>
Subject: [PATCH 0/2] Block I/O while SG reset operation in progress
Date: Fri, 24 Feb 2006 11:52:02 -0500 [thread overview]
Message-ID: <43FF39B2.3090302@emulex.com> (raw)
As promised in a previous thread:
http://marc.theaimsgroup.com/?l=linux-scsi&m=113321277408600&w=2
The midlayer today allows for calls to the eh handlers via sg to occur
while i/o continues to be sent to the drive run abated.
This patch ensures that i/o is stopped while an eh handler is being
processed. It adds a new flag, set by the async reset callers, which
augments the host-in-reset checks and stops i/o. The async reset
callers are already synchronized to hold off until the error thread is
no longer running.
There are 2 parts to this patch:
- the patch to the midlayer to stop i/o while resetting
- a patch to the lpfc driver which removes the barrier the driver
had implemented in the past.
-- james s
reply other threads:[~2006-02-24 16:52 UTC|newest]
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