From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lee Schermerhorn Date: Wed, 30 Jul 2008 16:06:43 -0400 Message-Id: <20080730200643.24272.16893.sendpatchset@lts-notebook> In-Reply-To: <20080730200618.24272.31756.sendpatchset@lts-notebook> References: <20080730200618.24272.31756.sendpatchset@lts-notebook> Subject: [PATCH 4/7] unevictable lru: add event counts to list scan Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: linux-mm@kvack.org, KOSAKI Motohiro , Rik van Riel , Eric.Whitney@hp.com, KAMEZAWA Hiroyuki List-ID: Fix to shm_locked-pages-are-unevictable.patch More breaking up of the single unevictable lru/mlocked pages vm events patch. Add the vm events counting to the unevictable lru list scanning for shm_unlock(). Signed-off-by: Lee Schermerhorn mm/vmscan.c | 5 +++++ 1 file changed, 5 insertions(+) Index: linux-2.6.27-rc1-mmotm-30jul/mm/vmscan.c =================================================================== --- linux-2.6.27-rc1-mmotm-30jul.orig/mm/vmscan.c 2008-07-30 13:26:46.000000000 -0400 +++ linux-2.6.27-rc1-mmotm-30jul/mm/vmscan.c 2008-07-30 13:34:58.000000000 -0400 @@ -2407,6 +2407,7 @@ retry: __dec_zone_state(zone, NR_UNEVICTABLE); list_move(&page->lru, &zone->lru[l].list); __inc_zone_state(zone, NR_INACTIVE_ANON + l); + __count_vm_event(UNEVICTABLE_PGRESCUED); } else { /* * rotate unevictable list @@ -2440,6 +2441,7 @@ void scan_mapping_unevictable_pages(stru while (next < end && pagevec_lookup(&pvec, mapping, next, PAGEVEC_SIZE)) { int i; + int pg_scanned = 0; zone = NULL; @@ -2448,6 +2450,7 @@ void scan_mapping_unevictable_pages(stru pgoff_t page_index = page->index; struct zone *pagezone = page_zone(page); + pg_scanned++; if (page_index > next) next = page_index; next++; @@ -2465,6 +2468,8 @@ void scan_mapping_unevictable_pages(stru if (zone) spin_unlock_irq(&zone->lru_lock); pagevec_release(&pvec); + + count_vm_events(UNEVICTABLE_PGSCANNED, pg_scanned); } } -- 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