From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 6 Jul 2000 14:32:51 +0100 From: "Stephen C. Tweedie" Subject: Re: page_table_lock problem [was: Re: 2.4 / 2.5 VM plans] Message-ID: <20000706143251.C4237@redhat.com> References: <20000629144408.R3473@redhat.com> <20000706155123.A11504@saw.sw.com.sg> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20000706155123.A11504@saw.sw.com.sg>; from saw@saw.sw.com.sg on Thu, Jul 06, 2000 at 03:51:23PM +0800 Sender: owner-linux-mm@kvack.org Return-Path: To: Andrey Savochkin Cc: "Stephen C. Tweedie" , Rik van Riel , linux-mm@kvack.org List-ID: Hi, On Thu, Jul 06, 2000 at 03:51:23PM +0800, Andrey Savochkin wrote: > > I've looked at RSS updates in 2.4.0 kernels. > You're right, they are not protected enough from > concurrent updates from mm paths (mmap, page fault handler) and swapout > path. Moreover, I found that page_table_lock which is supposed to serialize > page table updates from mm and swapout paths isn't taken in the later at all! > Is it a bug or am I missing something? Sorry, I don't have time to look closely at this right now --- I'm swamped with travel and ext3 work, and I've just moved house... Cheers, Stephen -- 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.eu.org/Linux-MM/