Re: CVS commit: src

[Jukka Ruohonen <jruohonen%iki.fi@localhost>]

On Thu, Sep 29, 2011 at 10:51:25PM +0200, Jean-Yves Migeon wrote:
> >Blocking kmem is not necessarily a bug is you hold an adaptive lock.
> >Your mutex is IPL_NONE, if I remember correctly. You probably don't need
> >to be smart.
> 
> I am not sure that this lock will be released if the LWP needs to sleep 
> for the allocation. Which means that the lock will block other LWPs from 
> running even when they do not need to allocate memory.

Of course I can preallocate the structure and avoid the issue this way.
But similar issues seem to be widely present in the detach/deregister-type
routines (another example: drvctl_close() in kern_drvctl.c).

- Jukka.