From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: Comment on patch to remove nr_async_pages limit References: <01060507422800.28232@oscar> Reply-To: zlatko.calusic@iskon.hr From: Zlatko Calusic Date: 05 Jun 2001 18:08:45 +0200 In-Reply-To: <01060507422800.28232@oscar> (Ed Tomlinson's message of "Tue, 5 Jun 2001 07:42:28 -0400") Message-ID: <87u21uykmq.fsf@atlas.iskon.hr> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org Return-Path: To: Ed Tomlinson Cc: Mike Galbraith , Marcelo Tosatti , lkml , linux-mm@kvack.org List-ID: Ed Tomlinson writes: [snip] > Maybe we can have the best of both worlds. Is it possible to allocate the BH > early and then defer the IO? The idea being to make IO possible without having > to allocate. This would let us remove the async page limit but would ensure > we could still free. > Yes, this is a good idea if you ask me. Basically, to remove as many limits as we can, and also to secure us from the deadlocks. With just a few pages of extra memory for the reserved buffer heads, I think it's a fair game. Still, pending further analysis... -- Zlatko -- 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/