> Thanks for the hint. I fixed pmap_create() according to your proposal and now
> nfsd works again.
Care to share the patch?
> Raising the count of elements of
> unnamed_dev_in_use in fs/super.c to eg 4096 resulted in the opportunity to
> mount as many NFS directories.
You did not send your patch (yet again), so there is no way
to tell precisely what you have accomplished. I suspect that it may
create pages with same device number that belong to different
mounts. I do not pretend to understand how VFS and page cache
use device numbers. If device numbers are used for any indexing,
pages may be mixed up with resulting data corruption.
I cannot say if this scenario is likely without looking
at the VFS code. Perhaps we ought to ask Stephen, Al, or Trond
about it.
> Why did you
> Pete base your patch on 4 new major device numbers whereas Andis patch did
> not need them?
He probably never tested his patch. I asked him and we'll know
soon if it was so.
-- Pete
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/