Re: [PATCH 4/8] autofs4-2.6 - to support autofs 4.1.x

[Ian Kent]

On Wed, 28 Jan 2004, Mike Waychison wrote:

> raven@xxxxxxxxxx wrote:
> 
> > 
> >Patch:
> >
> >4-autofs4-2.6.0-test9-waitq2.patch
> >
> >Adds a spin lock to serialize access to wait queue in the super block info
> >struct.
> >
> >  
> >
> A while back I wrote up a patch for autofs3 that serialized waitq access 
> and changed the waitq counters to atomic_t.  I never sent it out because 
> I had realized that the changes I made weren't needed as all waitq 
> code-paths were running under the BKL (the big ones were ->lookup and 
> the ioctls). 

My understanding is that this code can be reached at least via lookup, 
readdir and revalidate. I thought that in 2.6 none of these held the BKL 
on entry (I'll have to check). Certainly this is the case for revalidate.

Ian


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/