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SubjectRe: [patch] Real-Time Preemption, -RT-2.6.13-rc4-V0.7.52-01

* Stephen C. Tweedie <> wrote:

> On Fri, 2005-08-26 at 12:20, Steven Rostedt wrote:
> > > could you try a), how clean does it get? Personally i'm much more in
> > > favor of cleanliness. On the vanilla kernel a spinlock is zero bytes on
> > > UP [the most RAM-sensitive platform], and it's a word on typical SMP.
> It's a word, maybe; but it's a word used only by ext3 afaik, and it's
> getting added to the core buffer_head. Not very nice. It certainly
> looks like the easiest short-term way out for a development patch
> series, though.

but ext3 is pretty much the only mainstream FS that still makes use of
buffer_heads, so it should be fine. Any other solution looks _way_ too
hacky - and the current bit-spin-lock solution is less than charming

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