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SubjectRe: [PATCH+comment] fix tmpfs BUG and AOP_WRITEPAGE_ACTIVATE
Erez Zadok wrote:
> In message <Pine.LNX.4.64.0710250705510.9811@blonde.wat.veritas.com>, 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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