linux-kernel - Re: [PATCH 0/9] dasd: implement block timeout

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Message-ID: <20130617092215.6c0df7d1@mschwide>
Date:	Mon, 17 Jun 2013 09:22:15 +0200
From:	Martin Schwidefsky <schwidefsky@...ibm.com>
To:	Martin Schwidefsky <schwidefsky@...ibm.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-s390 <linux-s390@...r.kernel.org>,
	Jens Axboe <axboe@...nel.dk>
Subject: Re: [PATCH 0/9] dasd: implement block timeout

On Mon,  3 Jun 2013 17:03:13 +0200
Martin Schwidefsky <schwidefsky@...ibm.com> wrote:

> This is a re-send of a patch series Hannes sent last january. Stefan
> looked at the patches and our tests went well, so I guess this is ready
> for upstream integration.
> 
> The changes to block/blk-core.c and block/blk-timeout.c look good
> to me, but I would like to request an acked-by from Jens for the
> block layer parts in patch #6 and #7 of the series (pretty please :-)
> 
> The original patch description from Hannes:
> 
> This patch series implements a block timeout handler for
> DASDs. The main impetus was to allow for a fixed upper
> timeout value after which a request is aborted.
> This is required eg when implementing a host-based
> mirroring system where otherwise the entire mirror
> would stall under certain circumstances.
> 
> Changes since v1:
> - Fixed lock inversion in dasd_times_out()
> - Checked for 'device->block' when writing to 'timeout' attribute
> - Check against 'UINT_MAX' when verifying the 'timeout' value
> 
> Once I got the required acked-by I can carry the patch set in the
> linux-s390 tree for the next merge window.
> 
> Hannes Reinecke (9):
>   dasd: Clarify comment
>   dasd: make number of retries configurable
>   dasd: process all requests in the device tasklet
>   dasd: Implement block timeout handling
>   dasd: Reduce amount of messages for specific errors
>   block,dasd: detailed I/O errors
>   block: check for timeout function in blk_rq_timed_out()
>   dasd: Add 'timeout' attribute
>   dasd: Fail all requests when DASD_FLAG_ABORTIO is set
> 
>  arch/s390/include/uapi/asm/dasd.h |    4 ++
>  block/blk-core.c                  |    3 +
>  block/blk-timeout.c               |    5 +-
>  drivers/s390/block/dasd.c         |  115 +++++++++++++++++++++++++++++++++----
>  drivers/s390/block/dasd_devmap.c  |   97 +++++++++++++++++++++++++++++++
>  drivers/s390/block/dasd_diag.c    |    8 ++-
>  drivers/s390/block/dasd_eckd.c    |   15 +++--
>  drivers/s390/block/dasd_erp.c     |    8 +++
>  drivers/s390/block/dasd_fba.c     |   10 +++-
>  drivers/s390/block/dasd_int.h     |   10 ++++
>  drivers/s390/block/dasd_ioctl.c   |   59 +++++++++++++++++++
>  11 files changed, 313 insertions(+), 21 deletions(-)
> 

Ping. Jens could you please look at patch #6 and #7? I don't want
to do a please pull with block layer parts without your consent.

-- 
blue skies,
   Martin.

"Reality continues to ruin my life." - Calvin.

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