Erez Zadok wrote:
In message <[email protected]>, Hugh Dickins writes:
On Thu, 25 Oct 2007, Pekka Enberg wrote:
With unionfs also fixed, we don't know of an absolute need for this
patch (and so, on that basis, the !wbc->for_reclaim case could indeed
be removed very soon); but as I see it, the unionfs case has shown
that it's time to future-proof this code against whatever stacking
filesystems come along. Hence I didn't mention the names of such
filesystems in the source comment.
I think "future proof" for other stackable f/s is a good idea, esp. since
many of the stackable f/s we've developed and distributed over the past 10
years are in some use in various places: gzipfs, avfs, tracefs, replayfs,
ncryptfs, versionfs, wrapfs, i3fs, and more (see www.filesystems.org).
A number of filesystems want partial or full stackability, so getting
rid of lack-of-stackability whereever it may be is highly valuable.
-hpa
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