From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 25 Jul 2002 05:00:15 -0700 (MST) From: Craig Kulesa Subject: Re: [PATCH 2/2] move slab pages to the lru, for 2.5.27 In-Reply-To: <200207242012.59150.tomlins@cam.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Ed Tomlinson Cc: Steven Cole , William Lee Irwin III , Steven Cole , Rik van Riel , linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: On Wed, 24 Jul 2002, Ed Tomlinson wrote: > This patch fixes the SMP problems for Steve. Good sleuthing! Glad to hear this seems to solve the bizarre SMP out-of-memory problems. However, you should know that there *might* still be demons lurking about. I still have problems with 2.5.27-rmap-slablru with CONFIG_SMP booting on a UP laptop, when 2.5.27-rmap (the big rmap patch) works fine in SMP mode. I have spinlock debugging turned on and get oopses with modprobe trying to load the rtc module. It fails this test in include/asm/spinlock.h: #ifdef CONFIG_DEBUG_SPINLOCK if (lock->magic != SPINLOCK_MAGIC) BUG(); Modprobe also traps itself in infinite loops trying to load unix.o for net-pf-1. Eeeks. I'll test on other UP boxes in SMP mode and see if I can trigger anything. For now, I've applied Ed's patch and tested that it doesn't cause any problems for UP behavior, so I added it to the patch queue against 2.5.27 and is included in the rmap patches for 2.5.28, which you can download: http://loke.as.arizona.edu/~ckulesa/kernel/rmap-vm/2.5.28/ The only new change for 2.5.28 is fixing software suspend to work with the full rmap patch. I tested swsusp with 2.5.28-rmap-slablru, and it's very cool. :) Although I suspect SMP folks will have their hands busy with *other* things in 2.5.28, (!!) more SMP feedback regarding slab-on-LRU would be most helpful! Thanks, Craig Kulesa -- 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/