flashdisk real-time behavior

[Chris Johns]

Brett Swimley wrote:
> 
  > I have been working on "stress testing" the bdbuf routine using an
> sdcard driver.  I occasionally see some lockups.  I had one version that 
> had applied your patches, Till, to eliminate some race conditions but 
> abandoned them when I was tracking some other issues.  I will reapply 
> them to my current version and retest.

Does a PR exist with this patch ?

> I agree with the idea of mutex protection.
> 
> I tried a mutex approach with the existing bdbuf function and had 
> limited success.  Perhaps your fresh take on this would help.  Do you 
> have any sort of version of bdbuf.c that I could drop in and try?
>

No I have had a chance to look at it but will. I think it is important to get 
resolved. Things are "building up" to me looking at this.

Regards
Chris