Re: Kernel bio layer is sending bio size more than our block device is capable of handling

2017-03-02 Thread Umesh Patel
>From the kernel source code i came to know below things.

4.1 kernel version onward 
*""nr_pages = min(sdio->pages_in_io, bio_get_nr_vecs(map_bh->b_bdev))""*
line has been removed which was considering max_sectors_kb of queue. 

Now new code is something like this* "nr_pages = min(sdio->pages_in_io,
BIO_MAX_PAGES)"*, which is sending 256 bytes of data to our device which we
are not supporting.

Please let me know is there any other place where i can register my
max_sectors_kb to kernel.



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Re: Kernel bio layer is sending bio size more than our block device is capable of handling

2017-03-02 Thread Umesh Patel
>From the kernel source code i came to know below things.

4.1 kernel version onward 
*""nr_pages = min(sdio->pages_in_io, bio_get_nr_vecs(map_bh->b_bdev))""*
line has been removed which was considering max_sectors_kb of queue. 

Now new code is something like this* "nr_pages = min(sdio->pages_in_io,
BIO_MAX_PAGES)"*, which is sending 256 bytes of data to our device which we
are not supporting.

Please let me know is there any other place where i can register my
max_sectors_kb to kernel.



--
View this message in context: 
http://linux-kernel.2935.n7.nabble.com/Kernel-bio-layer-is-sending-bio-size-more-than-our-block-device-is-capable-of-handling-tp1381843p1381844.html
Sent from the Linux Kernel mailing list archive at Nabble.com.


RE: Kernel bio layer is sending bio size more than our block device is capable of handling

2017-03-02 Thread Umesh Patel
Hi Christoph Hellwig,

So 4.4.0-59-generic is not stable one ?. If not then probably it would be 
problem for us if customer want the same kernel version!.


Thanks,
Umesh



-Original Message-
From: Christoph Hellwig [mailto:h...@infradead.org] 
Sent: Thursday, March 2, 2017 9:34 PM
To: Umesh Patel
Cc: Christoph Hellwig; linux-kernel@vger.kernel.org
Subject: Re: Kernel bio layer is sending bio size more than our block device is 
capable of handling

Hi Umesh,

it's linux-bl...@vger.kernel.org, and the place where all block layer and 
driver development happens, you can subsribe to it using the same way you 
subscribed to linux-kernel, just replacing the list name.

The latest released vesion at this point is Linux 4.10.


RE: Kernel bio layer is sending bio size more than our block device is capable of handling

2017-03-02 Thread Umesh Patel
Hi Christoph Hellwig,

So 4.4.0-59-generic is not stable one ?. If not then probably it would be 
problem for us if customer want the same kernel version!.


Thanks,
Umesh



-Original Message-
From: Christoph Hellwig [mailto:h...@infradead.org] 
Sent: Thursday, March 2, 2017 9:34 PM
To: Umesh Patel
Cc: Christoph Hellwig; linux-kernel@vger.kernel.org
Subject: Re: Kernel bio layer is sending bio size more than our block device is 
capable of handling

Hi Umesh,

it's linux-bl...@vger.kernel.org, and the place where all block layer and 
driver development happens, you can subsribe to it using the same way you 
subscribed to linux-kernel, just replacing the list name.

The latest released vesion at this point is Linux 4.10.


Re: Kernel bio layer is sending bio size more than our block device is capable of handling

2017-03-02 Thread Christoph Hellwig
Hi Umesh,

it's linux-bl...@vger.kernel.org, and the place where all block layer
and driver development happens, you can subsribe to it using the
same way you subscribed to linux-kernel, just replacing the list name.

The latest released vesion at this point is Linux 4.10.


Re: Kernel bio layer is sending bio size more than our block device is capable of handling

2017-03-02 Thread Christoph Hellwig
Hi Umesh,

it's linux-bl...@vger.kernel.org, and the place where all block layer
and driver development happens, you can subsribe to it using the
same way you subscribed to linux-kernel, just replacing the list name.

The latest released vesion at this point is Linux 4.10.


Re: Kernel bio layer is sending bio size more than our block device is capable of handling

2017-03-02 Thread Christoph Hellwig
Please post your driver to the linux-block list, and test a recent
kernel.


Re: Kernel bio layer is sending bio size more than our block device is capable of handling

2017-03-02 Thread Christoph Hellwig
Please post your driver to the linux-block list, and test a recent
kernel.


RE: Kernel bio layer is sending bio size more than our block device is capable of handling

2017-03-02 Thread Umesh Patel
Hi Christoph Hellwig,

Thanks for reply.
BTW (since I'm new) what is linux-block list ?. Is it subscribe ?.
Can you please let me know which is latest kernel version ?


Thanks,
Umesh

-Original Message-
From: Christoph Hellwig [mailto:h...@infradead.org] 
Sent: Thursday, March 2, 2017 9:13 PM
To: Umesh Patel
Cc: linux-kernel@vger.kernel.org
Subject: Re: Kernel bio layer is sending bio size more than our block device is 
capable of handling

Please post your driver to the linux-block list, and test a recent kernel.


RE: Kernel bio layer is sending bio size more than our block device is capable of handling

2017-03-02 Thread Umesh Patel
Hi Christoph Hellwig,

Thanks for reply.
BTW (since I'm new) what is linux-block list ?. Is it subscribe ?.
Can you please let me know which is latest kernel version ?


Thanks,
Umesh

-Original Message-
From: Christoph Hellwig [mailto:h...@infradead.org] 
Sent: Thursday, March 2, 2017 9:13 PM
To: Umesh Patel
Cc: linux-kernel@vger.kernel.org
Subject: Re: Kernel bio layer is sending bio size more than our block device is 
capable of handling

Please post your driver to the linux-block list, and test a recent kernel.