jffs2 summary problem

[bin.wang at qkmtech.com]

Hello Thomas：

thank you very much ,it it not so crucial for me .i just want the best performance。if someone has do this work before ,i wish they can help me .if not, i wiil try my best to sovle this problem when i has time . 

not now

best wishes
ben



bin.wang at qkmtech.com
 
From: ThomasDörfler
Date: 2018-01-30 15:02
To: bin wang; rtems-users at rtems.org
Subject: Re: jffs2 summary problem
Hello Ben,

the RTEMS community is always happy to see the functionality growning, especially with additions, which are useful to real life applications.In general I think there are three options to add missing functionality to the RTEMS ecosystem:

1.) invest your own expertise and time to get it done and to get it integrated
2.) find someone who has spare time to do it 
3.) fund the corresponding work with the money required

If a faster startup of the existing jffs2 RTEMS port is crucial for you, option 3 may be interesting for you. Among others, we at embedded brains can create a quote for you for commercial support, with the goal to get the corresponding functionality ported and integrated. Please let me know if this is interesting for you.

Kind regards,

Thomas.



Von: "bin wang" <bin.wang at qkmtech.com>
An: "bin wang" <bin.wang at qkmtech.com>, "rtems-users at rtems.org" <users at rtems.org>
Gesendet: Dienstag, 30. Januar 2018 07:45:20
Betreff: Re: jffs2 summary problem

>On 30/01/18 05:16, bin.wang at qkmtech.com wrote:
>> hi everyone
>>
>> now i use jffs2 as my flash filesystem. but the  time  of the scan the 
>> device is two long , i find that  someone said that when i set the 
>> CONFIG_JFFS2_SUMMARY macro ，the time will reduce too much。
 
>This looks like a Linux configuration option.

yes , i has view some of the information,jffs2 is ported from linux environment to rtems. but i think the mount time is too long  for me 
 
>>
>> but i did not find the realization of the summary.  i only find the 
>> summary.h and no function realization.
>>
>> if i want to use this to reduce the scan time . how should i do ?
 
>You have to figure out how it works on Linux and how we can enable/port 
>this to RTEMS.

because i did not find the realization of this feature in the rtems source code . i just find the header file of the summary. 
i think i has no much time to do the port work and also i am not familiar with linux too . 
is rtems develop group want to support this feature in jffs2? 
thank you very much.
 
>>
>> i use rtems 4.11.2 and zynq 7000 platform.
>>
>> best wishes
>> ben
>>
>> ------------------------------------------------------------------------
>> bin.wang at qkmtech.com
>>
>>
>> _______________________________________________
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>> users at rtems.org
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> 
>-- 
>Sebastian Huber, embedded brains GmbH
> 
>Address : Dornierstr. 4, D-82178 Puchheim, Germany
>Phone   : +49 89 189 47 41-16
>Fax     : +49 89 189 47 41-09
>E-Mail  : sebastian.huber at embedded-brains.de
>PGP     : Public key available on request.
> 
>Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
 

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--------------------------------------------
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Thomas Doerfler
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Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
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