DragonFly BSD
DragonFly kernel List (threaded) for 2004-11
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Re: VFS commit schedule HEADS UP, and vfsx24.patch available - vfs work (expert developers only)

From: Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx>
Date: Wed, 10 Nov 2004 12:29:27 -0800 (PST)

:Wouldn't UNIONFS and NULLFS be just as suited to being implemented in 
:userland as any filesystem?
:I anticipated some daemon vaguely akin to amd which handles requests to 
:union and null mounted filesystems.  And portalfs, etc, etc.  Any 
:filesystem that is more-or-less a redirection service.
:If the user VFS API was ready you might also get more filesystem 
:developers.  Or lower quality filesystem developers.  Or a free set of 
:steak knives.

    I would say so, but a prerequisit to the user VFS layering is kernel
    VFS threading which I haven't gotten to yet.  The current VFS patch set
    is focused on the VOP_*() API fixes and namecache conversion (which 
    themselves are prereqs to being able to properly thread VFS).
					Matthew Dillon 

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