From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: [PATCH 12/30] mm: memory reserve management From: Matt Mackall In-Reply-To: <1217241541.6331.42.camel@twins> References: <20080724140042.408642539@chello.nl> <20080724141530.127530749@chello.nl> <1217239564.7813.36.camel@penberg-laptop> <1217240224.6331.32.camel@twins> <1217240994.7813.53.camel@penberg-laptop> <1217241541.6331.42.camel@twins> Content-Type: text/plain; charset=utf-8 Date: Mon, 28 Jul 2008 11:59:34 -0500 Message-Id: <1217264374.15724.42.camel@calx> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: owner-linux-mm@kvack.org Return-Path: To: Peter Zijlstra Cc: Pekka Enberg , Linus Torvalds , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org, trond.myklebust@fys.uio.no, Daniel Lezcano , Neil Brown , cl@linux-foundation.org List-ID: On Mon, 2008-07-28 at 12:39 +0200, Peter Zijlstra wrote: > Also, you might have noticed, I still need to do everything SLOB. The > last time I rewrote all this code I was still hoping Linux would 'soon' > have a single slab allocator, but evidently we're still going with 3 for > now.. :-/ > > So I guess I can no longer hide behind that and will have to bite the > bullet and write the SLOB bits.. i>>?I haven't seen the rest of this thread, but I presume this is part of your OOM-avoidance for network I/O framework? SLOB can be pretty easily expanded to handle a notion of independent allocation arenas as there are only a couple global variables to switch between. i>>?kfree will also return allocations to the page list (and therefore arena) from whence they came. That may make it pretty simple to create and prepopulate reserve pools. -- Mathematics is the supreme nostalgia of our time. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org