Messages in this thread | | | Date | Tue, 22 Jan 2002 12:45:18 -0500 | From | Pete Zaitcev <> | Subject | Re: 2.4.17:Increase number of anonymous filesystems beyond 256? |
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> From: Rainer Krienke <krienke@uni-koblenz.de> > Date: Tue, 22 Jan 2002 16:23:54 +0100
> 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.
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