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Message-Id: <1193836123.27652.209.camel@twins>
Date: Wed, 31 Oct 2007 14:08:43 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: Nick Piggin <nickpiggin@...oo.com.au>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
Andrew Morton <akpm@...ux-foundation.org>,
linux-kernel@...r.kernel.org, linux-mm@...ck.org,
netdev@...r.kernel.org, trond.myklebust@....uio.no
Subject: Re: [PATCH 03/33] mm: slub: add knowledge of reserve pages
On Wed, 2007-10-31 at 13:54 +0100, Peter Zijlstra wrote:
> On Wed, 2007-10-31 at 22:25 +1100, Nick Piggin wrote:
> > What I'm saying is that the slab allocator slowpath should always
> > just check watermarks against the current task. Instead of this
> > ->reserve stuff.
>
> So what you say is to allocate a slab every time we take the slow path,
> even when we already have one?
BTW, a task that does not have reserve permissions will already attempt
to allocate a new slab - this is done to probe the current watermarks.
If this succeeds the reserve status is lifted.
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