From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from zps77.corp.google.com (zps77.corp.google.com [172.25.146.77]) by smtp-out.google.com with ESMTP id l3NNWtcu008493 for ; Mon, 23 Apr 2007 16:32:55 -0700 Received: from smtp.corp.google.com (spacemonkey1.corp.google.com [192.168.120.115]) by zps77.corp.google.com with ESMTP id l3NNWjmh017749 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Mon, 23 Apr 2007 16:32:45 -0700 Received: from [10.253.168.165] (m682a36d0.tmodns.net [208.54.42.104]) (authenticated bits=0) by smtp.corp.google.com (8.13.8/8.13.8) with ESMTP id l3NNWixL021596 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Mon, 23 Apr 2007 16:32:44 -0700 Message-ID: <462D421A.3070309@google.com> Date: Mon, 23 Apr 2007 16:32:42 -0700 From: Ethan Solomita MIME-Version: 1.0 Subject: [RFC 5/7] cpuset write vm writeout References: <462D3F4C.2040007@google.com> In-Reply-To: <462D3F4C.2040007@google.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: linux-mm@kvack.org List-ID: Throttle VM writeout in a cpuset aware way This bases the vm throttling from the reclaim path on the dirty ratio of the cpuset. Note that a cpuset is only effective if shrink_zone is called from direct reclaim. kswapd has a cpuset context that includes the whole machine. VM throttling will only work during synchrononous reclaim and not from kswapd. Originally by Christoph Lameter Signed-off-by: Ethan Solomita --- diff -uprN -X linux-2.6.21-rc4-mm1/Documentation/dontdiff 4/include/linux/writeback.h 5/include/linux/writeback.h --- 4/include/linux/writeback.h 2007-04-23 14:37:31.000000000 -0700 +++ 5/include/linux/writeback.h 2007-04-23 14:37:51.000000000 -0700 @@ -85,7 +85,7 @@ static inline void wait_on_inode(struct int wakeup_pdflush(long nr_pages, nodemask_t *nodes); void laptop_io_completion(void); void laptop_sync_completion(void); -void throttle_vm_writeout(gfp_t gfp_mask); +void throttle_vm_writeout(nodemask_t *nodes,gfp_t gfp_mask); extern struct timer_list laptop_mode_wb_timer; static inline int laptop_spinned_down(void) diff -uprN -X linux-2.6.21-rc4-mm1/Documentation/dontdiff 4/mm/page-writeback.c 5/mm/page-writeback.c --- 4/mm/page-writeback.c 2007-04-23 15:12:27.000000000 -0700 +++ 5/mm/page-writeback.c 2007-04-23 15:13:15.000000000 -0700 @@ -384,7 +384,7 @@ void balance_dirty_pages_ratelimited_nr( } EXPORT_SYMBOL(balance_dirty_pages_ratelimited_nr); -void throttle_vm_writeout(gfp_t gfp_mask) +void throttle_vm_writeout(nodemask_t *nodes, gfp_t gfp_mask) { struct dirty_limits dl; @@ -399,7 +399,7 @@ void throttle_vm_writeout(gfp_t gfp_mask } for ( ; ; ) { - get_dirty_limits(&dl, NULL, &node_online_map); + get_dirty_limits(&dl, NULL, nodes); /* * Boost the allowable dirty threshold a bit for page diff -uprN -X linux-2.6.21-rc4-mm1/Documentation/dontdiff 4/mm/vmscan.c 5/mm/vmscan.c --- 4/mm/vmscan.c 2007-04-23 14:37:32.000000000 -0700 +++ 5/mm/vmscan.c 2007-04-23 14:37:51.000000000 -0700 @@ -1055,7 +1055,7 @@ static unsigned long shrink_zone(int pri } } - throttle_vm_writeout(sc->gfp_mask); + throttle_vm_writeout(&cpuset_current_mems_allowed, sc->gfp_mask); atomic_dec(&zone->reclaim_in_progress); return nr_reclaimed; -- 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