RE: Linux 3.1-rc1 (nfs/pnfs and drivers/md)

-----Original Message-----
From: Christoph Hellwig [mailto:hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org]
Sent: Thursday, August 11, 2011 2:07 PM
To: Peng, Tao
Cc: torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org; rdunlap-/UHa2rfvQTnk1uMJSBkQmQ@public.gmane.org; bergwolf-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org;
Trond.Myklebust-HgOvQuBEEgTQT0dZR+AlfA@public.gmane.org; linux-raid-u79uwXL29TY76Z2rM5mHXA@public.gmane.org;
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: Linux 3.1-rc1 (nfs/pnfs and drivers/md)

Note that the object layout also effectively needs the block layer.

That is taken care of by PNFS_OBJLAYOUT depending on SCSI_OSD_ULD.

The dependency chain for PNFS_OBJLAYOUT on BLOCK is:
PNFS_OBJLAYOUT-> SCSI_OSD_ULD -> SCSI_OSD_INITIATOR -> SCSI-> BLOCK

With the patch, if CONFIG_BLOCK is not set, pnfs file layout can still be built.

Thanks,
Tao

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